RESEARCH ARTICLE
Vol. 35 (1) March 2023, p. 147-156

IMPROVING THE GROWTH PERFORMANCE OF OIL PALM SEEDLINGS BY MIXTURES OF ORGANIC AND CHEMICAL FERTILISERS

MOHD FAHMI KENI¹*; NURHAFIZHOH ZAINUDDIN¹ and MOHAMED MAZMIRA MOHD MASRI¹
DOI: https://doi.org/10.21894/jopr.2022.0033  |   Published Online: 14 June 2022
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RESEARCH ARTICLE
Vol. 35 (1) March 2023, p. 133-146

DESIGNING gRNAs TARGETING OIL PALM PHYTOENE DESATURASE (EgPDS) GENE AND CONSTRUCTION OF VECTORS FOR OIL PALM CRISPR/CAS9 STUDY

NORFAEZAH JAMALUDIN¹; BOHARI BAHARIAH¹; NOOR AZMI SHAHARUDDIN²; CHAI LING HO³; OMAR ABDUL RASID¹; GHULAM KADIR AHMAD PARVEEZ¹ and MAT YUNUS ABDUL MASANI¹*
DOI: https://doi.org/10.21894/jopr.2022.0032  |   Published Online: 10 June 2022
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RESEARCH ARTICLE
Vol. 35 (2) June 2023, p. 307-319

VIABILITY OF FORAGE SORGHUM INTEGRATION IN OIL PALM PLANTING AREA FOR PRODUCTION OF LIVESTOCK FODDER

NORKASPI KHASIM¹* and RAJA ZULKIFLI RAJA OMAR¹
DOI: https://doi.org/10.21894/jopr.2022.0031  |   Published Online: 3 June 2022
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RESEARCH ARTICLE
Vol. 35 (1) March 2023, p. 121-132

COMPARISON OF REAL-TIME PCR, CONVENTIONAL PCR AND RT-LAMP FOR THE DETECTION OF COCONUT CADANG-CADANG VIROID VARIANT IN OIL PALM

NUR DIYANA ROSLAN¹; GANESAN VADAMALAI²; ABU SEMAN IDRIS¹; KONG LIH LING³ and SHAMALA SUNDRAM¹*
DOI: https://doi.org/10.21894/jopr.2022.0030  |   Published Online: 2 June 2022
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RESEARCH ARTICLE
Vol. 35 (1) March 2023, p. 111-120

COUNTING OF OIL PALM FRESH FRUIT BUNCHES USING COMPUTER VISION

MINARNI SHIDDIQ¹*; DODI SOFYAN ARIEF²; DEFRIANTO¹; VICKY VERNANDO DASTA¹; DEBORAH MARGARETHA PANJAITAN¹ and DONI SAPUTRA²
DOI: https://doi.org/10.21894/jopr.2022.0029  |   Published Online: 27 May 2022
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RESEARCH ARTICLE
Vol. 35 (2) June 2023, p. 247-255

EFFECT OF PALM OIL STERILISATION TECHNOLOGY ON AQUEOUS CO-PRODUCTS CHARACTERISTICS

FATAH YAH ABD. MANAF¹*; ROHAYA MOHD HALIM¹; ANDREW YAP KIAN CHUNG¹ and YAHAYA HAWARI¹
DOI: https://doi.org/10.21894/jopr.2022.0028  |   Published Online: 27 May 2022
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RESEARCH ARTICLE
Vol. 35 (1) March 2023, p. 75-85

A COMPARATIVE STUDY OF OIL PALM FRONDS TORREFACTION UNDER FLUE GAS AND NITROGEN ATMOSPHERES

PREMCHAND¹; MASAHARU KOMIYAMA^1,2,3*; AQSHA⁴ and YOSHIMITSU UEMURA²
DOI: https://doi.org/10.21894/jopr.2022.0027  |   Published Online: 27 May 2022
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RESEARCH ARTICLE
Vol. 35 (1) March 2023, p. 58-74

SPATIAL DISTRIBUTION OF Rattus SPECIES (RODENTIA: MURIDAE) IN OIL PALM PLANTATIONS OF PENINSULAR MALAYSIA WITH SPECIES VERIFICATION USING CYTOCHROME OXIDASE I (COI) GENE

MOHAMAD HARRIS NASIR¹; MUHAMAD SHAKIRIN MISPAN¹; SUBHA BHASSU^1,2; KHOO JING JING⁴; SAZALY ABUBAKAR⁴; SITI NURUL IZZAH MOHD AZAMI⁵; SITI NABILAH ISHAK⁶; FARAH SHAFAWATI MOHD-TAIB⁶ and HASMAHZAITI OMAR^1,2,3*
DOI: https://doi.org/10.21894/jopr.2022.0026  |   Published Online: 20 May 2022
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RESEARCH ARTICLE
Vol. 34 (4) December 2022, p. 657-667

FIELD EVALUATION OF OIL PALM GENETIC MATERIALS FOR PARTIAL RESISTANCE IN Ganoderma HOTSPOTS OF TROPICAL PEAT SOIL

MOHD DIN, A¹*; MARHALIL M¹; MOHD MUSTAKIM, M¹; NORZIHA, A¹; KUSHAIRI, A² AND RAJANAIDU, N³
DOI: https://doi.org/10.21894/jopr.2022.0025  |   Published Online: 12 May 2022
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RESEARCH ARTICLE
Vol. 35 (2) June 2023, p. 256-267

EFFECT OF STORAGE TEMPERATURE AND DURATION ON RHEOLOGICAL AND THERMAL CHARACTERISTICS OF SUPEROLEIN OLEOGELS

MEI HUEY SAW^{1, 2}; WEN HUEI LIM¹; CHEE BENG YEOH¹ and CHIN PING TAN^2*
DOI: https://doi.org/10.21894/jopr.2022.0024  |   Published Online: 9 May 2022
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RESEARCH ARTICLE
Vol. 35 (2) June 2023, p. 236-246

EFFECT OF METHYLENE DIPHENYL DIISOCYANATE INDEX ON PHYSICOMECHANICAL AND MORPHOLOGICAL PROPERTIES OF PALM OLEIN-BASED VISCOELASTIC POLYURETHANE FOAMS

NURUL ‘AIN HANZAH¹ *; KOSHEELA DEVI POO PALAM¹ ; TUAN NOOR MAZNEE TUAN ISMAIL¹ ; SRIHANUM ADNAN¹ ; NORHAYATI MOHD NOOR¹ ; MOHD NORHISHAM SATTAR¹ and YEONG SHOOT KIAN¹
DOI: https://doi.org/10.21894/jopr.2022.0023  |   Published Online: 9 May 2022
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RESEARCH ARTICLE
Vol. 35 (1) March 2023, p. 23-32

STABILITY AND PHYSICAL PROPERTIES OF DIHYDROXYSTEARIC ACID BASED ORGANOGELS IN DIFFERENT TYPES OF VEGETABLE OIL

NORASHIKIN AHMAD¹* and ZAFARIZAL ALDRIN AZIZUL HASAN¹
DOI: https://doi.org/10.21894/jopr.2022.0022  |   Published Online: 22 April 2022
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REVIEW ARTICLE
Vol. 35 (1) March 2023, p. 1-22

IMPACT OF Elaeidobius kamerunicus (Faust) INTRODUCTION ON OIL PALM FRUIT FORMATION IN MALAYSIA AND FACTORS AFFECTING ITS POLLINATION EFFICIENCY: A REVIEW

SAHARUL ABILLAH MOHAMAD^1,12*; MOHAMED MAZMIRA MOHD MASRI¹; NORMAN KAMARUDIN¹; MOHAMAD ROSMAN SULAIMAN¹; ARNAUD COSTA⁴; MEILINA ONG-ABDULLAH¹; HASNOL OTHMAN¹; SITI NURULHIDAYAH AHMAD¹; MUHAMMAD NURUL YAQIN SYARIF¹; ZAM ABDUL KARIM⁵; IDRIS ABDUL GHANI⁶; SAMSUDIN AMIT⁷; AZLINA ZAKARIA⁷; SU CHONG MING⁸; SIAW TING CHUAN⁹; JOHARI JALINAS¹⁰; YAP YAU KOONG³; AHMAD ANUAR SAIRI¹¹; SYED MOHD FAIZAL SYED ALI¹¹; MAHBOB ABDULLAH²; SIVAPRAGASAM ANNAMALAI⁴; KING JIE HUNG^12,13; MUHAMAD AZMI MOHAMMED¹²; IDRIS ABU SEMAN¹; RAMLE MOSLIM¹ and GHULAM KADIR AHMAD PARVEEZ¹
DOI: https://doi.org/10.21894/jopr.2022.0021  |   Published Online: 21 April 2022
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RESEARCH ARTICLE
Vol. 34 (4) December 2022, p. 752-761

PROPERTIES OF BREAD MADE WITH PALM-BASED FLUID SHORTENING

NUR HAQIM ISMAIL¹*; NORAZURA AILA MOHD HASSIM¹; SAW MEI HUEY¹; NOOR LIDA HABI MAT DIAN¹ and SIVARUBY KANAGARATNAM¹
DOI: https://doi.org/10.21894/jopr.2022.0020  |   Published Online: 20 April 2022
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RESEARCH ARTICLE
Vol. 34 (4) December 2022, p. 741-751

ASSESSMENT OF FATTY ACID AND VITAMIN E PROFILES IN EDIBLE OILS IN MALAYSIA

RADHIKA LOGANATHAN¹ and TENG KIM-TIU¹*
DOI: https://doi.org/10.21894/jopr.2022.0019  |   Published Online: 14 April 2022
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REVIEW ARTICLE
Vol. 34 (1) March 2022, p. 1-25

OMICS PLATFORM TECHNOLOGIES FOR DISCOVERY AND UNDERSTANDING THE SYSTEMS BIOLOGY OF OIL PALM – Review Article

UMI SALAMAH RAMLI¹*; ABRIZAH OTHMAN¹; BENJAMIN LAU YII CHUNG¹; HASLIZA HASSAN¹; NUR ‘AIN MOHD ISHAK¹; ZAIN NURAZAH¹; NURUL LIYANA ROZALI¹; NOOR IDAYU MHD TAHIR¹; SYAHANIM SHAHWAN¹; SHAHIRAH BALQIS DZULKAFLI¹; RAJINDER SINGH¹; OMAR ABD RASID¹; RAVIGADEVI SAMBANTHAMURTHI¹; MOHAMAD ARIF ABD MANAF¹ and GHULAM KADIR AHMAD PARVEEZ¹
DOI: https://doi.org/10.21894/jopr.2020.0084  |   Published Online: 7 October 2020
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SHORT COMMUNICATION
Vol. 34 (1) March 2022, p. 177-183

SENSORY EVALUATION OF FILLETS FROM TILAPIA (Oreochromis niloticus) FED DIETS CONTAINING OIL PALM LIPIDS

WAN NOORAIDA, W M¹*; ABIDAH, M N¹; NUR ATIKAH, I¹; MOOKIAH, S¹; MUHAMMAD AMIRUL, F¹ and RAFIDAH, A H¹
DOI: https://doi.org/10.21894/jopr.2020.0108  |   Published Online: 9 December 2020
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RESEARCH ARTICLE
Vol. 34 (1) March 2022, p. 167-176

PHYSICOCHEMICAL PROPERTIES OF PALM OLEIN-BASED POLYOLS PREPARED USING HOMOGENEOUS AND HETEROGENEOUS CATALYSTS

NORHAYATI MOHD NOOR^1*; TUAN NOOR MAZNEE TUAN ISMAIL¹; MOHD AZMIL MOHD NOOR¹; KOSHEELA DEVI POO PALAM¹; MOHD NORHISHAM SATTAR¹; NURUL ‘AIN HANZAH¹; SRIHANUM ADNAN¹ and YEONG SHOOT KIAN¹
DOI: https://doi.org/10.21894/jopr.2021.0034  |   Published Online: 25 August 2021
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RESEARCH ARTICLE
Vol. 34 (1) March 2022, p. 152-166

SYNTHESIS AND PHYSICOCHEMICAL PROPERTIES OF NEW ESTOLIDE ESTERS AS POTENTIAL BIOLUBRICANT BASE OIL

SENG SOI HOONG¹*; MOHD ZAN ARNIZA¹; NEK MAT DIN NIK SITI MARIAM¹; ABU HASSAN NOOR ARMYLISAS¹; SOOK WAH TANG¹; TUAN NOOR MAZNEE TUAN ISMAIL¹ and SHOOT KIAN YEONG¹
DOI: https://doi.org/10.21894/jopr.2021.0032  |   Published Online: 21 July 2021
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RESEARCH ARTICLE
Vol. 34 (1) March 2022, p. 26-34

MORPHO-PHYSIOLOGICAL ASSESSMENT OF OIL PALM (Elaeis guineensis Jacq.) SEEDLINGS EXPOSED TO SIMULATED DROUGHT CONDITIONS

IKHAJIAGBE, B¹; AITUAE, W² and OGWU, M C³*
DOI: https://doi.org/10.21894/jopr.2021.0018  |   Published Online: 4 May 2021
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RESEARCH ARTICLE
Vol. 34 (4) December 2022, p. 731-740

ASSOCIATION OF FATTY ACIDS AND POLAR COMPOUND FRACTIONS WITH ACRYLAMIDE FORMATION DURING INTERMITTENT FRYING

SU LEE KUEK¹; AZMIL HAIZAM AHMAD TARMIZI^2*; RAZNIM ARNI ABD RAZAK²; SELAMAT JINAP^1,3; SAPARIN NORLIZA⁴ and MAIMUNAH SANNY^1,3*
DOI: https://doi.org/10.21894/jopr.2022.0018  |   Published Online: 18 March 2022
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RESEARCH ARTICLE
Vol. 34 (4) December 2022, p. 721-730

EFFECTS OF PALM OIL-BASED SURFACTANT USED IN PESTICIDE FORMULATION ON TERRESTRIAL PLANTS

ASMA LIYANA SHAARI^{1 *}; NOORAZAH ZOLKARNAIN¹ ; ISMAIL AB. RAMAN¹ and RAZMAH GHAZALI^{1 *}
DOI: https://doi.org/10.21894/jopr.2022.0017  |   Published Online: 16 March 2022
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RESEARCH ARTICLE
Vol. 34 (4) December 2022, p. 710-720

METHOD FOR THE DETERMINATION OF TOTAL CHLORIDE CONTENT IN EDIBLE OILS

ABDUL NIEFAIZAL ABDUL HAMMID¹ ; AZMIL HAIZAM AHMAD TARMIZI¹ ; MUHAMAD RODDY RAMLI¹ *; AINIE KUNTOM¹ and LEE HOCK CHIN²
DOI: https://doi.org/10.21894/jopr.2022.0016  |   Published Online: 9 March 2022
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RESEARCH ARTICLE
Vol. 34 (4) December 2022, p. 699-709

PROPERTIES OF SOLID POLYURETHANES MADE FROM PALM OLEIN-BASED POLYOLS PREPARED WITH VARIOUS TYPES OF NUCLEOPHILES

TUAN NOOR MAZNEE TUAN ISMAIL¹*; NOR AZOWA IBRAHIM²; KOSHEELA DEVI POO PALAM¹; HOONG SENG SOI¹; MOHD AZMIL MOHD NOOR¹; YEONG SHOOT KIAN¹; EMILIA ABD. MALEK²; IBRAHIM SENDIJAREVIC³ and VAHID SENDIJAREVIC³
DOI: https://doi.org/10.21894/jopr.2022.0015  |   Published Online: 2 March 2022
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RESEARCH ARTICLE
Vol. 34 (4) December 2022, p. 686-698

EMULSIFYING PROPERTIES AND ANTIOXIDANT ACTIVITY OF PHOSPHOLIPIDS FRACTIONS FROM PALM PRESSED FIBRE

KGS AHMADI¹*; TETI ESTIASIH² and AHMAD DIAUL KHULUQ³
DOI: https://doi.org/10.21894/jopr.2022.0014   |   Published Online: 23 February 2022
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RESEARCH ARTICLE
Vol. 34 (4) December 2022, p. 629-642

CELL WALL-GLYCOLIPIDS PROFILING OF OIL PALM ROOTS DURING Ganoderma boninense INFECTION USING GAS CHROMATOGRAPHYMASS SPECTROMETRY

ALEXANDER, A¹ ; ABDULLAH, S² ; DAYOU, J³ and CHONG, K P^{4 *}
DOI: https://doi.org/10.21894/jopr.2022.0013  |   Published Online: 15 February 2022
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RESEARCH ARTICLE
Vol. 34 (3) September 2022, p. 497-505

CELLULOSE NANOCRYSTALS DERIVED FROM OIL PALM EMPTY FRUIT BUNCH REINFORCED NATURAL RUBBER LATEX NANOCOMPOSITES

INTAN SYAHIERA AZLI¹; AFKAR RABBANI HIDAYATULLAH HIPENI²; and KHAIRATUN NAJWA MOHD AMIN²*
DOI: https://doi.org/10.21894/jopr.2022.0012  |   Published Online: 15 February 2022
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RESEARCH ARTICLE
Vol. 34 (3) September 2022, p. 571-579

ESTIMATING THE SHELF LIFE OF FLAVOURING OIL GRAVY CONSISTING OF RED PALM OIL

GUANGYI GONG¹; XIAOJING WU¹; SHIMIN WU^1,2*; JUNHAO YOONG3, MIN JI³ and MINGMING HU³
DOI: https://doi.org/10.21894/jopr.2022.0011  |   Published Online: 15 February 2022
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RESEARCH ARTICLE
Vol. 34 (3) September 2022, p. 562-570

TOXICOLOGICAL ASSESSMENT OF REFINED PALM-PRESSED MESOCARP FIBRE OIL

KIM-TIU TENG^1*; RADHIKA LOGANATHAN¹; EE LING SIEW^2,3; HARRISON LIK NANG LAU¹ and NOR FADILAH RAJAB^3,4
DOI: https://doi.org/10.21894/jopr.2022.0010  |   Published Online: 31 January 2022
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RESEARCH ARTICLE
Vol. 34 (4) December 2022, p. 622-628

Strategus aloeus (COLEOPTERA: SCARABAEIDAE) DAMAGE AND ITS RELATIONSHIP WITH RAINFALL AND HYBRID OIL PALM AGE IN COLOMBIA

LUIS GUILLERMO MONTES-BAZURTO^1*; ALEX ENRIQUE BUSTILLO-PARDEY¹ and ANUAR MORALES RODRIGUEZ¹
DOI: https://doi.org/10.21894/jopr.2022.0009  |   Published Online: 31 January 2022
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RESEARCH ARTICLE
Vol. 34 (4) December 2022, p. 643-656

OIL PALM SSR RESOURCE INTERFACE (OPSRI) – WEB-BASED BIOINFORMATIC ANALYSIS PIPELINE FOR SSR MINING

ROZANA ROSLI¹ *; MOHD AMIN AB HALIM ¹; TING NGOOT-CHIN¹ ; NOORHARIZA MOHD ZAKI¹ ; JAYANTHI NAGAPPAN¹ ; RAJINDER SINGH¹ ; LESLIE LOW ENG-TI¹ and ZETI-AZURA MOHAMED-HUSSEIN^2,3
DOI: https://doi.org/10.21894/jopr.2022.0008  |   Published Online: 28 January 2022
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RESEARCH ARTICLE
Vol. 34 (4) December 2022, p. 678-685

CHARACTERISATION OF PALM PYROLIGNEOUS ACID AND ITS EFFECTIVENESS AS ANTIFUNGAL AGENT FOR OIL PALM TRUNK

FAZLIANA ABDUL HAMID¹ *; NAHRUL HAYAWIN ZAINAL¹ ; NUR ELIYANTI ALI OTHMAN¹ ; FATIHA ISMAIL¹ ; NOORSHAMSIANA ABDUL WAHAB¹ and ASTIMAR ABD AZIZ¹
DOI: https://doi.org/10.21894/jopr.2022.0007  |   Published Online: 28 January 2022
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RESEARCH ARTICLE
Vol. 34 (4) December 2022, p. 668-677

MECHANICAL DESIGN ANALYSIS AND IMPROVEMENT OF ALUMINIUM ALLOY CANTAS SICKLE BLADE USING FINITE ELEMENT METHOD SIMULATION

AHMAD SYAZWAN RAMLI¹ *; MOHD AZWAN MOHD BAKRI¹ ; MOHD RIZAL AHMAD¹ and MOHD IKMAL HAFIZI AZAMAN¹
DOI: https://doi.org/10.21894/jopr.2022.0006  |   Published Online: 28 January 2022
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RESEARCH ARTICLE
Vol. 34 (3) September 2022, p. 488-496

FEASIBILITY STUDY OF OIL PALM HARVESTING USING PULSE FIBRE LASER SYSTEM WITH DIFFERENT LENSES

MOHD IKMAL HAFIZI AZAMAN¹ *; AHMAD SYAZWAN RAMLY¹ ; MOHD KHAIRUL FADZLY MDRADZI¹ ; MOHD RIZAL AHMAD¹ ; MOHD RAMDHAN MOHD KHALID¹ ; MOHD AZWAN MOHD BAKRI¹ ; YASMIN MUSTAPHA KAMIL¹ and MOHD ADZIR MAHDI²
DOI: https://doi.org/10.21894/jopr.2022.0005  |   Published Online: 28 January 2022
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RESEARCH ARTICLE
Vol. 34 (3) September 2022, p. 453-464

ANTIFUNGAL AND ANTIOXIDANT PEPTIDES FROM OIL PALM MESOCARPS

BENJAMIN LAU YII CHUNG¹ *; ABRIZAH OTHMAN¹ and UMI SALAMAH RAMLI¹
DOI: https://doi.org/10.21894/jopr.2022.0004  |   Published Online: 28 January 2022
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SHORT COMMUNICATION
Vol. 35 (1) March 2023, p. 185-192

SHORT COMMUNICATION: CULTURABLE BACTERIA POPULATION IN DIFFERENT OIL PALM PEAT SOIL OPERATIONAL ZONES

MOHD SHAWAL THAKIB MAIDIN^1*; GOGULA SELVI ASANG²; MOHD FAHMI KENI¹ and MOHAMED MAZMIRA MOHD MASRI¹
DOI: https://doi.org/10.21894/jopr.2022.0003  |   Published Online: 17 January 2022
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RESEARCH ARTICLE
Vol. 34 (3) September 2022, p. 439-452

DETERMINATION OF RELIABLE REFERENCE GENES FOR REVERSE TRANSCRIPTION QUANTITATIVE REAL-TIME PCR FROM OIL PALM TRANSCRIPTOMES

NADZIRAH AMIRUDDIN¹ ; PEK-LAN CHAN¹ ; KUANG-LIM CHAN¹ ; PEI-WEN ONG¹ ; PRISCILLA ELIZABETH MORRIS¹ ; MEILINA ONG-ABDULLAH¹ ; SUBHI SITI MASURA¹ and ENG-TI LESLIE LOW^1*
DOI: https://doi.org/10.21894/jopr.2022.0002  |   Published Online: 17 January 2022
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RESEARCH ARTICLE
Vol. 34 (3) September 2022, p. 506-523

INVESTIGATING THE POTENTIAL ANTI-DIABETIC MECHANISMS OF WATER-SOLUBLE PALM FRUIT EXTRACT

SOON-SEN LEOW^1,*; NORFAZLINA MOHD NAWI^1,2; SYED FAIRUS¹ and RAVIGADEVI SAMBANTHAMURTHI^1,3
DOI: https://doi.org/10.21894/jopr.2022.0001  |   Published Online: 17 January 2022
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RESEARCH ARTICLE
Vol. 34 (3) September 2022, p. 546-561

TOPICAL APPLICATION OF THE PALM TOCOTRIENOL-RICH FRACTION (TRF) ENHANCES CUTANEOUS WOUND HEALING IN TYPE 2 DIABETIC MICE

ZAIZUHANA SHAHRIM^1,2*; SUZANA MAKPOL²; GEOK CHIN TAN³; NURUL AISHAH MUHAMMAD¹ and ZAFARIZAL ALDRIN AZIZUL HASAN¹
DOI: https://doi.org/10.21894/jopr.2021.0054  |   Published Online: 5 January 2022
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RESEARCH ARTICLE
Vol. 34 (3) September 2022, p. 465-474

EFFECTS OF Phoma herbarum AS A BIOLOGICAL CONTROL AGENT OF GLYPHOSATE RESISTANT Eleusine indica

RUSLI, M H^1*; SHARIFFAH MUZAIMAH, S A¹; MAIZATUL, S M¹ and IDRIS, A S¹
DOI: https://doi.org/10.21894/jopr.2021.0053  |   Published Online: 23 December 2021
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RESEARCH ARTICLE
Vol. 34 (3) September 2022, p. 524-534

OPTIMISATION OF REACTION PARAMETERS FOR THE SYNTHESIS OF SOLKETAL LEVULINATE AS POTENTIAL BIODIESEL ADDITIVE

NMD NIK SITI MARIAM¹ *; SENG SOI HOONG¹ ; MOHD ZAN ARNIZA¹ ; SRIHANUM ADNAN¹ ; TUAN NOOR MAZNEE TUAN ISMAIL¹ ; SHOOT KIAN YEONG¹ and MUHAMMAD RAHIMI YUSOP²
DOI: https://doi.org/10.21894/jopr.2021.0052  |   Published Online: 21 December 2021
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ARTICLE IN PRESS
Vol. 34 (3) September 2022, p. 535-545

PALM-BASED CHOCOLATE SPREAD FOR WIDE RANGE TEMPERATURE APPLICATIONS USING SUNFLOWER WAX, CARNAUBA WAX AND BEES WAX

NORAZURA AILA MOHD HASSIM¹ *; SIVARUBY KANAGARATNAM¹ ; NUR HAQIM ISMAIL¹ ; NOOR LIDA HABI MAT DIAN¹ ; WAN ROSNANI AWG ISA¹ and NOOR SOFFALINA SOFIAN SENG²
DOI: https://doi.org/10.21894/jopr.2021.0051  |   Published Online: 21 December 2021
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RESEARCH ARTICLE
Vol. 34 (3) September 2022, p. 427-438

NEW INSIGHTS INTO THE PHYLOGEOGRAPHY OF THE OIL PALM PEST, Metisa plana TOWARDS ITS MANAGEMENT CONTROL

AQILAH SAKINAH BADRULISHAM¹; DAISUKE KAGEYAMA²; MADIHAH HALIM¹; AMEYRA AMAN-ZUKI¹; MOHAMED MAZMIRA MASRI³; SITI NURULHIDAYAH AHMAD³; BADRUL MUNIR MD-ZAIN⁴ and SALMAH YAAKOP^1*
DOI: https://doi.org/10.21894/jopr.2021.0050  |   Published Online: 3 December 2021
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RESEARCH ARTICLE
Vol. 34 (2) June 2022, p. 380-393

EFFECT OF SODIUM CASEINATE/CELLULOSE NANOCRYSTALS ADDITION ON THE PHYSICAL AND OXIDATIVE STABILITY OF RED PALM OLEIN-IN-WATER PICKERING EMULSIONS

SEE KIAT WONG¹; CHIEN LYE CHEW^1,2; JANARTHANAN SUPRAMANIAM¹; BENG TI TEY^1,3; TIN WUI WONG⁴ and SIAH YING TANG^1,3,5*
DOI: https://doi.org/10.21894/jopr.2021.0049  |   Published Online: 3 December 2021
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RESEARCH ARTICLE
Vol. 34 (2) June 2022, p. 276-288

EFFECTIVENESS OF Bacillus thuringiensis AERIAL SPRAYING AGAINST THE BAGWORM, Metisa plana WALKER (Lepidoptera: Psychidae) OUTBREAK IN OIL PALM USING DRONE

MOHAMED MAZMIRA MOHD MASRI¹*; NOORHAZWANI KAMARUDIN¹; NUR ROBAATUL MOHD ALI NAPIAH¹ and MOHD FAHMI KENI¹
DOI: https://doi.org/10.21894/jopr.2021.0045  |   Published Online: 23 November 2021
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RESEARCH ARTICLE
Vol. 34 (2) June 2022, p. 289-299

APPLICATION OF TARGETED GOAT GRAZING IN OIL PALM PLANTATIONS: ASSESSMENT OF WEED PREFERENCE, SPATIAL USE OF GRAZING AREA AND LIVE WEIGHT CHANGE

FRISCO NOBILLY^1,2*; THOMAS MANLIT RAYMOND MAXWELL³; MUHAMMAD SYAFIQ YAHYA⁴ and BADRUL AZHAR^4,5
DOI: https://doi.org/10.21894/jopr.2021.0047  |   Published Online: 23 November 2021
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RESEARCH ARTICLE
Vol. 34 (2) June 2022, p. 368-379

PALM GAMMA-TOCOTRIENOL SUPPLEMENTATION SUPPRESS TUMOUR GROWTH AND METASTASIS IN A SYNGENEIC MOUSE MODEL OF BREAST CANCER

SHONIA SUBRAMANIAM^1,2; AMMU KUTTY RADHAKRISHNAN³; JEYA SEELA ANANDHA RAO⁴; PREMDASS RAMDAS⁵; NG MEI HAN²; METHIL KANNAN KUTTY⁶ and KANGA RANI SELVADURAY^2*
DOI: https://doi.org/10.21894/jopr.2021.0048  |   Published Online: 22 November 2021
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RESEARCH ARTICLE
Vol. 34 (2) June 2022, p. 356-367

EFFECTS OF INTERESTERIFIED FATS ON LIPOPROTEIN SUB FRACTIONS AND HEPATIC GENE EXPRESSIONS IN A HAMSTER MODEL

GOWRI NAGAPAN¹*; GOH YONG MENG²; NOOR LIDA HABI MAT DIAN¹; CHE ANISHAS CHE IDRIS¹; KANGA RANI SELVADURAY¹ and NAGENDRAN BALASUNDRAM¹
DOI: https://doi.org/10.21894/jopr.2021.0046  |   Published Online: 22 November 2021
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RESEARCH ARTICLE
Vol. 34 (2) June 2022, p. 234-247

ALL-IN-ONE COMPREHENSIVE EXTRACTION OF METABOLITES, PROTEINS AND RIBONUCLEIC ACID FOR THE RAPID ANALYSIS OF OIL PALM SYSTEMS BIOLOGY

SYAHANIM SHAHWAN¹ *; ABRIZAH OTHMAN¹ ; ZAIN NURAZAH¹ ; NURUL LIYANA ROZALI¹ and UMI SALAMAH RAMLI¹
DOI: https://doi.org/10.21894/jopr.2021.0040  |   Published Online: 6 October 2021
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REVIEW ARTICLE
Vol. 34 (4) December 2022, p. 591-607

TREATED OIL PALM FROND AND ITS UTILISATION AS AN IMPROVED FEEDSTUFF FOR RUMINANTS – AN OVERVIEW

MOOKIAH SAMINATHAN^1*; WAN NOORAIDA WAN MOHAMED¹; ‘ABIDAH MD NOH¹; NUR ATIKAH IBRAHIM¹; MUHAMMAD AMIRUL FUAT¹; SURIYA KUMARI RAMIAH²; ERIC LIM TEIK CHUNG³ and NOOR LIDA HABI MAT DIAN¹
DOI: https://doi.org/10.21894/jopr.2021.0041  |   Published Online: 14 October 2021
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RESEARCH ARTICLE
Vol. 34 (2) June 2022, p. 348-355

DEVELOPMENT AND VALIDATION OF AN LC-MS/MS METHOD FOR DETERMINATION OF RESIDUAL 2,4-DICHLOROPHENOXYACETIC ACID HERBICIDE IN PALM OIL

NAJWA SULAIMAN^1*; YEOH CHEE BENG¹; NIK SASHA KHATRINA KHAIRUDDIN¹ and FARAH KHUWAILAH AHMAD BUSTAMAM¹
DOI: https://doi.org/10.21894/jopr.2021.0042  |   Published Online: 26 October 2021
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RESEARCH ARTICLE
Vol. 34 (2) June 2022, p. 337-347

INFLUENCE OF CHEMICAL COMPOSITION OF ACTIVATED CALCIUM BENTONITES AND SODIUM BENTONITES ON PALM OIL BLEACHING CAPACITY AND OIL QUALITY

DOLPHEN, R¹; DHURAKIT, P² and THIRAVETYAN, P²*
DOI: https://doi.org/10.21894/jopr.2021.0043  |   Published Online: 29 October 2021
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RESEARCH ARTICLE
Vol. 34 (3) September 2022, p. 475-487

NUTRITIONAL POTENTIAL OF SUPERCRITICAL FLUID-EXTRACTED PALM FRUIT

SOEK SIN TEH^1*; NATALIE VIVIEN GUNTER^1,2 and HARRISON LIK NANG LAU¹
DOI: https://doi.org/10.21894/jopr.2021.0044  |   Published Online: 8 November 2021
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SHORT COMMUNICATION
Vol. 34 (2) June 2022, p. 394-400

SHORT COMMUNICATION: SIMPLIFIED APPROACH FOR EARLY IDENTIFICATION OF SPONTANEOUS OIL PALM HAPLOID (Elaeis guineensis)

MUHAMMAD AZWAN, Z¹ ; ZAKI, N M¹ *; NORDIANA, H M N¹ ; MADON, M² ; NORZIHA, A¹ ; ZULKIFLI, Y¹ ; CHAN, P L¹ and SINGH, R¹
DOI: https://doi.org/10.21894/jopr.2021.0019  |   Published Online: 4 May 2021
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RESEARCH ARTICLE
Vol. 33 (4) December 2021, p. 713-723

DOES PALM MID FRACTION AFFECT ADULT SATIETY?

VOON, P T*; TOH, S W H**; NG, T K W‡; LEE, V K M**; YONG, X S**; YAP, S Y* and NESARETNAM, K‡‡
DOI: https://doi.org/10.21894/jopr.2021.0020  |   Published Online: 4 May 2021
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RESEARCH ARTICLE
Vol. 34 (1) March 2022, p. 92-103

NUTRIENT ENHANCEMENT OF PALM KERNEL CAKE VIA SOLID STATE FERMENTATION BY LOCALLY ISOLATED Rhizopus oryzae ME01

MOHD FIRDAUS, O¹*; ROHAYA, M H¹; MISKANDAR, M S¹ and ASTIMAR, A A¹
DOI: https://doi.org/10.21894/jopr.2021.0022  |   Published Online: 19 May 2021
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RESEARCH ARTICLE
Vol. 34 (1) March 2022, p. 35-45

HISTONE MODIFICATION MARKS IMPROVE IDENTIFICATION OF OIL PALM TRANSCRIPTION START SITES

SARPAN, N¹; TATARINOVA, T V²; LOW, E-T L¹; ONG-ABDULLAH, M¹; SAPIAN, I S³ and OOI, S-E¹*
DOI: https://doi.org/10.21894/jopr.2021.0021  |   Published Online: 19 May 2021
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RESEARCH ARTICLE
Vol. 34 (1) March 2022, p. 104-115

EFFECT OF BIOFUEL ON LIGHT-DUTY VEHICLES ENGINE PERFORMANCE AND LUBE OIL DEGRADATION

M ROPANDI¹; Z NAHRUL HAYAWIN¹; A A ASTIMAR¹; A W NOORSHAMSIANA¹; R RIDZUAN¹* and I ZAWAWI¹
DOI: https://doi.org/10.21894/jopr.2021.0023  |   Published Online: 19 May 2021
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RESEARCH ARTICLE
Vol. 33 (4) December 2021, p. 724-731

STABILITY AND PERFORMANCE OF PALMBASED TRANSPARENT SOAP WITH OIL PALM LEAVES EXTRACT

NORASHIKIN AHMAD*; ZAFARIZAL ALDRIN AZIZUL HASAN* and SITI HAJAR BILAL*
DOI: https://doi.org/10.21894/jopr.2021.0024  |   Published Online: 19 May 2021
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RESEARCH ARTICLE
Vol. 34 (1) March 2022, p. 46-55

CORRELATION BETWEEN NON-RIBOSOMAL PEPTIDE SYNTHETASE (NRPS) PRODUCTION AND VIRULENCE OF Ganoderma boninense PER71 ON OIL PALM (Elaeis guineensis)

JACKIE CHUA¹; KWAN YEE MIN²; ABRIZAH OTHMAN¹* and WONG MUI YUN³
DOI: https://doi.org/10.21894/jopr.2021.0025  |   Published Online: 31 May 2021
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RESEARCH ARTICLE
Vol. 34 (1) March 2022, p. 116-128

THE COLD FLOW PROPERTIES OF PALM BIODIESEL FOR DIESEL BLENDS MANDATE IN MALAYSIA’S HIGHLANDS

NURSYAIRAH JALIL^1,2; HARRISON LIK NANG LAU¹* and RIFQI IRZUAN ABDUL JALAL²
DOI: https://doi.org/10.21894/jopr.2021.0027  |   Published Online: 15 June 2021
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RESEARCH ARTICLE
Vol. 34 (1) March 2022, p. 139-151

INHIBITION OF CHOLINESTERASES BY WATER-SOLUBLE PALM FRUIT EXTRACT

SOON-SEN LEOW¹*; SYED FAIRUS¹ and RAVIGADEVI SAMBANTHAMURTHI²
DOI: https://doi.org/10.21894/jopr.2021.0028  |   Published Online: 17 June 2021
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RESEARCH ARTICLE
Vol. 34 (1) March 2022, p. 129-138

ASSESSMENT OF TRANS FATTY ACID LEVELS IN REFINED PALM-BASED OILS AND COMMERCIAL VEGETABLE OILS IN THE MALAYSIAN MARKET

HISHAMUDDIN, E¹*; ABD RAZAK, R A¹; YEOH, C B¹* and AHMAD TARMIZI, A H¹
DOI: https://doi.org/10.21894/jopr.2021.0029  |   Published Online: 21 June 2021
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RESEARCH ARTICLE
Vol. 34 (1) March 2022, p. 56-67

GROWTH AND DEVELOPMENT OF OIL PALM CLONE P164 EXPOSED TO LONGTERM CARBON DIOXIDE ENRICHMENT IN OPEN TOP CHAMBER

AMANINA, N S¹*; LINATOC, A C²; HANIFF, M H¹ and ROSLAN, M N¹
DOI: https://doi.org/10.21894/jopr.2021.0030  |   Published Online: 5 July 2021
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RESEARCH ARTICLE
Vol. 34 (1) March 2022, p. 68-78

ASSOCIATION OF SEED COLOUR WITH GERMINATION, PHYSICAL AND PHYSIOLOGICAL GROWTH OF OIL PALM (Elaeis guineensis) SEEDLINGS

M G NORSAZWAN¹; U R SINNIAH¹*; A B PUTEH¹; P NAMASIVAYAM²; D R APPLETON³; M MOHAIMI⁴ and I A AMINUDDIN⁴
DOI: https://doi.org/10.21894/jopr.2021.0031  |   Published Online: 5 July 2021
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RESEARCH ARTICLE
Vol. 34 (2) June 2022, p. 248-260

PUBLIC ENGAGEMENT PROMOTES CONSUMER CHOICE IN FAVOUR OF SUSTAINABLE PALM OIL

LAURA K HOBBS¹; JOSIE W PHILLIPS²; AMY B STAFF²; AMBER GOSS²; LAURA FOGG-ROGERS¹ and M D FARNON ELLWOOD^3*
DOI: https://doi.org/10.21894/jopr.2021.0033  |   Published Online: 11 August 2021
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RESEARCH ARTICLE
Vol. 34 (2) June 2022, p. 300-310

PARAMETRIC STUDY ON TRASH SEPARATION EFFICIENCY IN FFB CONSIGNMENT

CHE RAHMAT CHE MAT¹,^2*; ROHAYA MOHAMED HALIM¹; NADIAHNOR MD YUSOP²,³; NU’MAN ABDUL HADI¹ and ANDREW YAP KIAN CHUNG¹
DOI: https://doi.org/10.21894/jopr.2021.0035  |   Published Online: 25 August 2021
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RESEARCH ARTICLE
Vol. 34 (2) June 2022, p. 261-275

IDENTIFICATION OF OIL PALM ROOT-SPECIFIC GENES THROUGH MINING OF RNA-SEQ DATA AND RT-qPCR ANALYSIS

SUBHI SITI MASURA¹,^2*; OMAR ABD RASID¹; NOOR AZMI SHAHARUDDIN², ³; MAT YUNUS ABDUL MASANI¹; KUANG-LIM CHAN¹; ENG-TI LESLIE LOW¹; SITI SURIAWATI BADAI¹; AYUB NOR HANIN¹; ABDUL RAHMAN SITI RAHMAH¹; MOHD PUAD ABDULLAH²; AZZREENA MOHAMAD AZZEME² and GHULAM KADIR AHMAD PARVEEZ¹
DOI: https://doi.org/10.21894/jopr.2021.0036  |   Published Online: 30 August 2021
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RESEARCH ARTICLE
Vol. 34 (2) June 2022, p. 311-322

MICROBIAL PROTEIN EXTRACTION FROM PALM OIL MILL EFFLUENT

NOR FAIZAH, J¹*; NOORSHAMSIANA, A W¹; WAN HASAMUDIN, W H¹; NAHRUL HAYAWIN, Z¹; ROPANDI, M¹; NUR ELIYANTI, A O¹; ASTIMAR, A A¹ and ROHAYA, M H¹
DOI: https://doi.org/10.21894/jopr.2021.0037  |   Published Online: 28 September 2021
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RESEARCH ARTICLE
Vol. 34 (2) June 2022, p. 323-336

PALM OLEIN LUBRICATES AND REMOVES FRESHLY BAKED CONCRETE FROM ITS FORMWORK

SOH KHEANG LOH¹* and NGATIMAN MUZZAMMIL¹
DOI: https://doi.org/10.21894/jopr.2021.0038  |   Published Online: 28 September 2021
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SHORT COMMUNICATION
Vol. 34 (3) September 2022, p. 580-589

MOLECULAR IDENTIFICATION AND PHYLOGENETIC ANALYSIS OF FUNGI AND BACTERIA ASSOCIATED TO COMMON SPEAR ROT DISEASE IN MALAYSIA

NUR DIYANA ROSLAN¹; INTAN NUR AINNI MOHAMED AZNI¹ and SHAMALA SUNDRAM¹*
DOI: https://doi.org/10.21894/jopr.2021.0039  |   Published Online: 29 September 2021
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RESEARCH ARTICLE
Vol. 33 (4) December 2021, p. 588-606

A COMPARATIVE STUDY OF BACTERIAL COMMUNITIES DETERMINED BY CULTUREDEPENDENT AND-INDEPENDENT APPROACHES IN OIL PALM PLANTED ON TROPICAL PEATLAND

AYOB, ZAHIDAH* and KUSAI, NOR AZIZAH*
DOI: https://doi.org/10.21894/jopr.2021.0008  |   Published Online: 26 February 2021
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RESEARCH ARTICLE
Vol. 33 (4) December 2021, p. 643-652

EFFECT OF OPERATING TEMPERATURE ON PHYSICOCHEMICAL PROPERTIES OF EMPTY FRUIT BUNCH CELLULOSE-DERIVED BIOCHAR

STASHA ELEANOR ROSLAND ABEL*,^‡ ; SOH KHEANG LOH*; NOORSHAMSIANA ABDUL WAHAB*; ONDREJ MASEK**; MUSA IDRIS TANIMU^‡ and ROBERT THOMAS BACHMANN^‡
DOI: https://doi.org/10.21894/jopr.2021.0007  |   Published Online: 23 February 2021
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RESEARCH ARTICLE
Vol. 33 (4) December 2021, p. 689-702

CHARACTERISTICS OF RETAIL REFRIGERATED AND NON-REFRIGERATED MARGARINES/FAT SPREADS SOLD IN MALAYSIA

SIVARUBY KANAGARATNAM*; TENG KIM TIU*; NUR HAQIM ISMAIL*; NORAZURA AILA MOHD HASSIM*; WAN ROSNANI AWG ISA* and NOOR LIDA HABI MAT DIAN*
DOI: https://doi.org/10.21894/jopr.2021.0006  |   Published Online: 23 February 2021
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RESEARCH ARTICLE
Vol. 33 (4) December 2021, p. 703-712

RED PALM OIL IN LAYING DUCKS DIETS: EFFECTS ON PRODUCTIVE PERFORMANCE, EGG QUALITY, CONCENTRATIONS OF YOLK CAROTENOIDS

YIFEI LU*; SHUNAN DONG**; HAITENG ZHOU*; LIGANG YANG*; ZHAODAN WANG*; DA PAN*; XIAN YANG*; HUI XIA*; GUIJU SUN* and SHAOKANG WANG*
DOI: https://doi.org/10.21894/jopr.2021.0005  |   Published Online: 23 February 2021
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REVIEW ARTICLE
Vol. 34 (3) September 2022, p. 411-426

ASSOCIATION OF DIETARY FATS WITH GUT MICROBIOTA PROFILE: HOW DOES PALM OIL FIT IN?

S Y YAP¹*; P T VOON¹; Y K CHEAH²; V K M LEE³ and SELVADURAY, K R¹
DOI: https://doi.org/10.21894/jopr.2021.0004  |   Published Online: 16 February 2021
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REVIEW ARTICLE
Vol. 34 (3) September 2022, p. 401-410

CHAMPIONING SUSTAINABLE TREATMENT OF OIL PALM BASAL STEM ROT DISEASE VIA BIOLOGICAL CONTROL AGENTS

LAI KIM YEN¹* and NUSAIBAH SYD ALI¹*
DOI: https://doi.org/10.21894/jopr.2021.0003  |   Published Online: 7 January 2021
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REVIEW ARTICLE
Vol. 34 (2) June 2022, p. 219-233

AN OVERVIEW OF THE DEVELOPMENT OF THE OIL PALM INDUSTRY AND IMPACT OF THE SHELL GENE INNOVATION AS A QUALITY CONTROL TOOL TO IMPROVE PRODUCTIVITY

SINGH, R¹; LEE, K T²; OOI, L C L¹; LOW, E T L¹; ABDULLAH, M O¹; SAMBANTHAMURTHI, R¹ and AZMAN, I¹*
DOI: https://doi.org/10.21894/jopr.2021.0001  |   Published Online: 7 January 2021
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RESEARCH ARTICLE
Vol. 33 (4) December 2021, p. 577-587

GENETIC TRANSFORMATION OF OIL PALMBASED ON SELECTION WITH HYGROMYCIN

BAHARIAH, B*; RASID, O A*; RAHMAH, A R S*; PARVEEZ, G K A* and MASANI, M Y A*
DOI: https://doi.org/10.21894/jopr.2020.0111  |   Published Online: 9 December 2020
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REVIEW ARTICLE
Vol. 33 (4) December 2021, p. 565-576

BREEDING Virescens OIL PALM

VENGETA RAO* and CHANG, K C**
DOI: https://doi.org/10.21894/jopr.2020.0098  |   Published Online: 12 November 2020
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SHORT COMMUNICATION
Vol. 33 (4) December 2021, p. 732-738

IS THERE A SUSTAINABLE FUTURE FOR WILDLIFE IN OIL PALM PLANTATIONS IN MALAYSIA?

JAYASILAN MOHD-AZLAN* and LISA LOK*
DOI: https://doi.org/10.21894/jopr.2020.0104  |   Published Online: 23 November 2020
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RESEARCH ARTICLE
Vol. 33 (4) December 2021, p. 653-667

THE EFFECT OF SATURATED AND UNSATURATED FATTY ACID COMPOSITION IN BIO-BASED LUBRICANT TO THE TRIBOLOGICAL PERFORMANCES USING FOUR-BALL TRIBOTESTER

ZULHANAFI, P*; SYAHRULLAIL, S*; ABDUL HAMID, M K* and CHONG W W F*
DOI: https://doi.org/10.21894/jopr.2021.0010  |   Published Online: 16 March 2021
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RESEARCH ARTICLE
Vol. 33 (4) December 2021, p. 668-677

OPTIMISATION OF ALKALI EXTRACTION OF PALM KERNEL CAKE PROTEIN

FATAH YAH ABD MANAF* and NOOR LIDA HABI MAT DIAN*
DOI: https://doi.org/10.21894/jopr.2021.0011  |   Published Online: 1 April 2021
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RESEARCH ARTICLE
Vol. 33 (4) December 2021, p. 620-642

MAPPING THE NITROGEN STATUS ON IMMATURE OIL PALM AREA IN MALAYSIAN OIL PALM PLANTATION WITH AUTOPILOT TRACTOR-MOUNTED ACTIVE LIGHT SENSOR

ROHAIDA MOHAMMAD*; DARIUS EL PEBRIAN*; MOHAMMAD ANAS AZMI* and EZRIN MOHD HUSIN**
DOI: https://doi.org/10.21894/jopr.2021.0012  |   Published Online: 7 April 2021
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RESEARCH ARTICLE
Vol. 33 (4) December 2021, p. 678-688

THE EFFECT OF MICROWAVE TREATMENT AND DELAYED HARVESTING ON OIL PALM FRUITLETS (Elaeis guineensis) OIL QUALITY

NU’MAN ABDUL HADI*; NG MEI HAN*; RUSNANI ABD MAJID* and CHE RAHMAT CHE MAT*
DOI: https://doi.org/10.21894/jopr.2021.0015  |   Published Online: 20 April 2021
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RESEARCH ARTICLE
Vol. 34 (1) March 2022, p. 79-91

THE EFFECTS OF RECYCLING PALM PRESSEDFIBRE OIL ON CRUDE PALM OIL QUALITY

HASLIYANTI, A¹*; RUSNANI, A M¹; WAN HASAMUDIN, W H¹; NG, M H¹; NOR FAIZAH, J¹ and ROHAYA, M H¹
DOI: https://doi.org/10.21894/jopr.2021.0016  |   Published Online: 26 April 2021
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RESEARCH ARTICLE
Vol. 33 (4) December 2021, p. 617-628

BIRD SPECIES RICHNESS, ABUNDANCE AND THEIR FEEDING GUILD ACROSS OIL PALMS DEVELOPMENT THROUGH MIST-NETTING METHOD IN BETONG, SARAWAK

AMIT, B*; TUEN, A A** and KHO, L K*
DOI: https://doi.org/10.21894/jopr.2021.0017  |   Published Online: 27 April 2021
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RESEARCH ARTICLE
Vol. 33 (4) December 2021, p. 607-616

EVALUATION OF MITOCHONDRIAL DNA ISOLATION METHODS FOR OIL PALM (Elaeis guineensis) LEAF

AZIMI NURAZIYAN*; SIEW-ENG OOI* and MEILINA ONG-ABDULLAH*
DOI: https://doi.org/10.21894/jopr.2021.0009  |   Published Online: 16 March 2021
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RESEARCH ARTICLE
Vol. 33 (2) June 2021, p. 381-386

POTENTIAL OF Syncephalastrum racemosum AND Rhizopus arrhizus ISOLATED FROM OIL PALM TRUNKS PRODUCE CHITOSANS THAT INHIBIT THE GROWTH OF Ganoderma boninense

FAHRIZAL, M*; SARIFUDDIN* and SABRINA, T*
DOI: https://doi.org/10.21894/jopr.2020.0062  |   Published Online: 11 September 2020
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RESEARCH ARTICLE
Vol. 33 (2) June 2021, p. 335-346

EFFECT OF FEEDING PALM OIL SLUDGE AS PARTIAL REPLACEMENT OF MAIZE IN GROWING-FINISHING PIGS ON THE GROWTH PERFORMANCE, NUTRIENT DIGESTIBILITY AND BLOOD PROFILES

TEMJENNUNGSANG*; SAMANTA, A K*; ALI, M A**; DAS, B K* and GIRIN, G K‡
DOI: https://doi.org/10.21894/jopr.2020.0083  |   Published Online: 7 October 2020
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RESEARCH ARTICLE
Vol. 33 (2) June 2021, p. 248-256

EXPRESSION OF CADHERIN GENE IN Bacillus thuringiensis Cry1A TOXIN RESISTANT AND SUSCEPTIBLE STRAINS OF Tirathaba mundella

CALVIN TAN ZHE KHAI*; PATRICIA KING JIE HUNG**; SU CHONG MING**; HO KOK LIAN* and LAU WEI HONG‡
DOI: https://doi.org/10.21894/jopr.2020.0085  |   Published Online: 7 October 2020
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RESEARCH ARTICLE
Vol. 33 (2) June 2021, p. 299-306

INVESTIGATION ON THE EFFECT OF MONOGLYCERIDE CONCENTRATION ON PALM OIL BASED ALKYD RESIN PREPARATION

RIDZUAN RAMLI*; HUEI RUEY ONG**; CHI SHEIN HONG#; MD. MAKSUDUR RAHMAN KHAN##; ROSLI MOHD YUNUS#; ROHAYA MOHAMED HALIM*; ASTIMAR ABDUL AZIZ*; ZAWAWI IBRAHIM* and MUHAMMAD REMANUL ISLAM##
DOI: https://doi.org/10.21894/jopr.2020.0086  |   Published Online: 7 October 2020
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RESEARCH ARTICLE
Vol. 33 (2) June 2021, p. 257-266

SOIL CARBON DIOXIDE (CO₂) EFFLUX RATE AND OIL PALM YIELD FROM DIFFERENT PEAT TYPES IN SARAWAK, MALAYSIA

HASIMAH MOS*,‡‡; MOHD HANIFF HARUN*; KHO LIP KHOON*; NUR MAISARAH JANTAN*; AFIFAH ABDUL RAZAK*; NUR AMANINA SHAHABUDDIN*; HASNOL OTHMAN*; NORMAN KAMARUDIN*; GHULAM KADIR AHMAD PARVEEZ*; AHMAD KUSHAIRI DIN*; PARAMANANTHAN SELLIAH**; NGAB DOLLAH SALAM‡ and YUSRI YUSUP‡‡
DOI: https://doi.org/10.21894/jopr.2020.0091  |   Published Online: 22 October 2020
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RESEARCH ARTICLE
Vol. 33 (2) June 2021, p. 307-319

XYLAN RECOVERY FROM DILUTE NITRIC ACID PRETREATED OIL PALM FROND BAGASSE USING FRACTIONAL FACTORIAL DESIGN

NURUL AISHAH MAZLAN*; KAMALIAH ABDUL SAMAD*; HAFIZUDDIN WAN YUSSOF*; ROZAIMI ABU SAMAH** and JAMALIAH MD JAHIM‡
DOI: https://doi.org/10.21894/jopr.2020.0093  |   Published Online: 27 October 2020
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RESEARCH ARTICLE
Vol. 33 (2) June 2021, p. 278-288

QUANTITATIVE APPROACH FOR IRRIGATION REQUIREMENT OF OIL PALM: CASE STUDY IN CHUPING, NORTHERN MALAYSIA

MOHD SHAHKHIRAT NORIZAN*; AIMRUN WAYAYOK‡,‡‡; YAHYA ABD KARIM**; AHMAD FIKRI ABDULLAH‡,‡‡ and MUHAMMAD RAZIF MAHADI‡,‡‡
DOI: https://doi.org/10.21894/jopr.2020.0094  |   Published Online: 27 October 2020
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RESEARCH ARTICLE
Vol. 33 (2) June 2021, p. 320-326

METHANOLIC EXTRACTION OF FREE FERULIC ACID FROM OIL PALM

NG MEI HAN*
DOI: https://doi.org/10.21894/jopr.2020.0097  |   Published Online: 6 November 2020
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RESEARCH ARTICLE
Vol. 33 (2) June 2021, p. 360-380

BLENDED PALM FRACTIONS AS CONFECTIONERY FATS: A PRELIMINARY STUDY

NORAZURA AILA MOHD HASSIM*; SIVARUBY KANAGARATNAM* and NOOR LIDA HABI MAT DIAN*
DOI: https://doi.org/10.21894/jopr.2020.0101  |   Published Online: 17 November 2020
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RESEARCH ARTICLE
Vol. 33 (2) June 2021, p. 227-234

A PROOF-OF-CONCEPT STUDY: DETERMINING THE GEOGRAPHICAL ORIGIN OF CRUDE PALM OIL WITH THE COMBINED USE OF GC-IMS FINGERPRINTING AND CHEMOMETRICS

GOGGIN, K A*; BRODRICK, E**; WICAKSONO, A‡; COVINGTON, J A‡; DAVIES, A N‡‡ and MURPHY, D J*
DOI: https://doi.org/10.21894/jopr.2021.0013  |   Published Online: 7 April 2021
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REVIEW ARTICLE
Vol. 33 (2) June 2021, p. 181-214

OIL PALM ECONOMIC PERFORMANCE IN MALAYSIA AND R&D PROGRESS IN 2020 – Review Article

GHULAM KADIR AHMAD PARVEEZ*; AZMIL HAIZAM AHMAD TARMIZI*; SHAMALA SUNDRAM*; SOH KHEANG LOH*; MEILINA ONG-ABDULLAH*; KOSHEELA DEVI POO PALAM*; KAMALRUDIN MOHAMED SALLEH*; SHEILYZA MOHD ISHAK* and ZAINAB IDRIS*
DOI: https://doi.org/10.21894/jopr.2021.0026  |   Published Online: 11 June 2021
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REVIEW ARTICLE
Vol. 33 (3) September 2021, p. 387-399

POTENTIAL OF FUNCTIONALISED CELLULOSE FROM OIL PALM BIOMASS AS NITROGEN AND PHOSPHORUS BASED NUTRIENT ADSORBENT – A REVIEW

MEI MEI CHONG¹; LIAN SEE TAN¹*; NURFATEHAH WAHYUNY CHE JUSOH¹; MASAFUMI GOTO¹ and SUMATHI SETHUPATHI²
DOI: https://doi.org/10.21894/jopr.2020.0088  |   Published Online: 14 October 2020
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