2021 – Journal of Oil Palm Research

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. 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. 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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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. 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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RESEARCH ARTICLE
Vol. 33 (3) September 2021, p. 493-513

QUALITY OF COMMERCIAL PALM-BASED COOKING OIL PACKED IN PLASTIC POUCH AND POLYETHYLENE TEREPHTHALATE (PET) BOTTLE

NORAZURA AILA MOHD HASSIM¹*; NUR HAQIM ISMAIL¹; SIVARUBY KANAGARATNAM¹; WAN ROSNANI AWG ISA¹ and NOOR LIDA HABI MAT DIAN¹
DOI: https://doi.org/10.21894/jopr.2020.0089 | Published Online: 15 October 2020
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RESEARCH ARTICLE
Vol. 33 (3) September 2021, p. 413-424

PRELIMINARY STUDY ON EFFICIENCY OF DIFFERENT TIME AND LIGHT SOURCE IN LIGHT TRAPS FOR CAPTURING POPULATION OF ADULT OIL PALM BUNCH MOTH, Tirathaba mundella (Lepidoptera: Pyralidae)

MOHAMAD ROSMAN SULAIMAN¹*; SAHARUL ABILLAH MOHAMAD¹; MOHAMED MAZMIRA MOHD MASRI¹; SITI NURULHIDAYAH AHMAD¹ and NORMAN KAMARUDIN¹
DOI: https://doi.org/10.21894/jopr.2020.0095 | Published Online: 27 October 2020
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RESEARCH ARTICLE
Vol. 33 (3) September 2021, p. 425-435

IDENTIFICATION AND DETERMINATION OF THE SPECTRAL REFLECTANCE PROPERTIES OF LIVE AND DEAD BAGWORMS, Metisa plana WALKER (Lepidoptera: Psychidae) USING VIS/ NIR SPECTROSCOPY

MOHD NAJIB AHMAD^1,2*; ABDUL RASHID MOHAMED SHARIFF²; ISHAK ARIS²; IZHAL ABDUL HALIN² and RAMLE MOSLIM¹
DOI: https://doi.org/10.21894/jopr.2020.0099 | Published Online: 12 November 2020
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RESEARCH ARTICLE
Vol. 33 (3) September 2021, p. 524-531

DEVELOPMENT OF PALM-BASED VANASPATI (VEGETABLE GHEE): EFFECTS OF CRYSTALLISATION PROCEDURES ON THE PRODUCT TEXTURE

RAFIDAH ABD HAMID¹*; SIVARUBY KANAGARATNAM¹; NORAZURA AILA MOHD HASSIM¹; NUR HAQIM ISMAIL¹; WAN ROSNANI AWG ISA¹ and NOOR LIDA HABI MAT DIAN¹
DOI: https://doi.org/10.21894/jopr.2020.0102 | Published Online: 24 December 2020
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RESEARCH ARTICLE
Vol. 33 (3) September 2021, p. 400-412

NEURAL NETWORKS METHOD IN PREDICTING OIL PALM FFB YIELDS FOR THE PENINSULAR STATES OF MALAYSIA

YOUSIF Y HILAL¹*; YAHYA, A²; ISMAIL, W I W² and ASHA’ARI, Z H³
DOI: https://doi.org/10.21894/jopr.2020.0105 | Published Online: 25 November 2020
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RESEARCH ARTICLE
Vol. 33 (3) September 2021, p. 514-523

PREDICTION OF ACID, PEROXIDE AND TBA VALUES OF HEAT-TREATED PALM OIL USING A PARTIAL LEAST SQUARES–ORDINARY LEAST SQUARES MODEL BASED ON FOURIERTRANSFORM INFRARED SPECTROSCOPY

KUSNANDAR, F¹*; LIOE, H N¹; FARIDAH, D N¹; ANGGRAENI, R¹ and PRICILIA¹
DOI: https://doi.org/10.21894/jopr.2020.0106 | Published Online: 30 November 2020
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RESEARCH ARTICLE
Vol. 33 (3) September 2021, p. 436-446

OIL PALM MALE MEIOSIS PROFILING: FROM FIELD OBSERVATION TO CYTOGENETICS ANALYSIS

NORDIANA, H M N¹; MADON, M^1,2; SINGH, R1; SRITHARAN, K³; MUHAMMAD AZWAN, Z¹ and ZAKI, N M¹*
DOI: https://doi.org/10.21894/jopr.2020.0107 | Published Online: 4 December 2020
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RESEARCH ARTICLE
Vol. 33 (3) September 2021, p. 473-481

PRODUCTION OF FURFURAL FROM OIL PALM FIBRES

NUR ELIYANTI ALI OTHMAN¹*; ASTIMAR ABD AZIZ¹; WAN HASAMUDIN WAN HASSAN¹; NOR FAIZAH JAILANI¹; FAZLIANA ABD HAMID¹ and NOORSHAMSIANA ABDUL WAHAB¹
DOI: https://doi.org/10.21894/jopr.2020.0109 | Published Online: 9 December 2020
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RESEARCH ARTICLE
Vol. 33 (3) September 2021, p. 532-541

IS PALM MID FRACTION A HEALTHIER CHOICE AS A COCOA BUTTER EQUIVALENT?

VOON, P T^1*; TOH, S W H²; NG, T K W³; LEE, V K M²; YONG, X S²; NG, Y T¹ and NESARETNAM, K⁴
DOI: https://doi.org/10.21894/jopr.2020.0100 | Published Online: 12 November 2020
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SHORT COMMUNICATION
Vol. 33 (3) September 2021, p. 555-564

PRINCIPAL COMPONENT ANALYSIS (PCA) EVALUATION OF LIQUID CHROMATOGRAPHYMASS SPECTROMETRY (LC-MS) DATASETS OF Ganoderma boninense INTRACELLULAR METABOLITES

ZAIN NURAZAH1*; ABRIZAH OTHMAN¹ and UMI SALAMAH RAMLI¹
DOI: https://doi.org/10.21894/jopr.2020.0103 | Published Online: 20 November 2020
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RESEARCH ARTICLE
33 (2) June 2021, p. 215-226

SOIL FUNGAL COMPOSITION AND DIVERSITY IN OIL PALM PLANTATION AT SUNGAI ASAP, SARAWAK, MALAYSIA

SHARRON WONG*; FARAH MELISSA MUHARAM**; OSAMAH RASHED‡ and KHAIRULMAZMI AHMAD‡‡
DOI: https://doi.org/10.21894/jopr.2021.0014 | Published Online: 15 April 2021
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RESEARCH ARTICLE
Vol. 33 (3) September 2021, p. 542-554

RHEOLOGICAL PROPERTIES OF PALM-BASED CARBOXYMETHYL CELLULOSE SOLUTIONS

NOR ZULIANA YUSOF*; ZAFARIZAL ALDRIN AZIZUL HASAN*; NUR ELIYANTI ALI OTHMAN* and YUSRABBIL AMIYATI YUSOF*
DOI: https://doi.org/10.21894/jopr.2020.0110 | Published Online: 9 December 2020
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RESEARCH ARTICLE
Vol. 33 (3) September 2021, p. 458-472

QUALITY IMPROVEMENT OF PALM KERNEL CAKE AS BROILER FEED USING PRE-CLEANING SYSTEM

ROHAYA MOHAMED HALIM*; RIDZUAN RAMLI*; CHE RAHMAT CHE MAT*; NU’MAN ABDUL HADI*; MOHD FIRDAUS OTHMAN* and ASTIMAR ABD AZIZ*
DOI: https://doi.org/10.21894/jopr.2020.0112 | Published Online: 14 December 2020
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RESEARCH ARTICLE
Vol. 33 (3) September 2021, p. 447-457

MOLECULAR CLONING OF Elaeis guineensis PHYTOENE SYNTHASE (Egpsy) AND ITS EXPRESSION IN MESOCARP TISSUES

WAN NUR SYUHADA, W S*; RASID, O A* and PARVEEZ, G K A*
DOI: https://doi.org/10.21894/jopr.2020.0113 | Published Online: 17 December 2020
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RESEARCH ARTICLE
Vol. 33 (2) June 2021, p. 267-277

THE DYNAMIC OF CARBON DIOXIDE (CO₂) EMISSION AND LAND COVERAGE ON INTERCROPPING SYSTEM ON OIL PALM REPLANTING AREA

SRI AMBAR KUSUMAWATI*; SUDIRMAN YAHYA**; HARIYADI**; SRI MULATSIH‡ and IDA NUR ISTINA‡‡
DOI: https://doi.org/10.21894/jopr.2020.0114 | Published Online: 28 December 2020
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RESEARCH ARTICLE
Vol. 33 (3) September 2021, p. 482-492

DRYING OF OIL PALM LUMBER BY COMBINING AIR FORCE DRYING AND MODIFIED SUPERFAST DRYING METHODS

MUHAMMAD NADZIM, M N*; EDI, S B*; MOJTABA, S**; ZAIDON, A* and LEE, S H‡
DOI: https://doi.org/10.21894/jopr.2021.0002 | Published Online: 7 January 2021
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RESEARCH ARTICLE
Vol. 33 (1) March 2021, p. 84-92

USING TERRAIN ALGORITHMS ON A DIGITAL ELEVATION MODEL TO EVALUATE YIELD VARIABILITY IN OIL PALM

ALBERTO MARTINEZ*; JAMES J CAMBERATO*; PHILLIP OWENS** and JENETTE ASHTEKAR*
DOI: https://doi.org/10.21894/jopr.2020.0092 | Published Online: 27 October 2020
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RESEARCH ARTICLE
Vol. 33 (1) March 2021, p. 64-73

PERFORMANCE EVALUATION OF A MOTORISED PALM OIL EXTRACTOR WITH QUALITY ASSESSMENT OF THE PALM OIL EXTRACTED IN COMPARISON WITH A MANUAL VERTICAL PRESS

NICHOLAS KIGGUNDU* and JOSEPH JJAGWE*
DOI: https://doi.org/10.21894/jopr.2020.0096 | Published Online: 4 November 2020
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RESEARCH ARTICLE
Vol. 33 (1) March 2021, p. 37-45

ECONOMIC INJURY LEVEL OF OIL PALM BUNCH MOTH, Tirathaba mundella WALKER FOR PEST MANAGEMENT RECOMMENDATIONS IN OIL PALM PRODUCTION

SU CHONG MING*; PATRICIA KING JIE HUNG*; KWAN YEE MING*; ZAKRY FITRI AB AZIZ* and ONG KIAN HUAT*
DOI: https://doi.org/10.21894/jopr.2020.0090 | Published Online: 21 October 2020
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RESEARCH ARTICLE
Vol. 33 (1) March 2021, p. 119-128

PALM TOCOTRIENOLS CAUSE CLEAVAGE OF POLY-(ADP)-RIBOSE POLYMERASE ENZYME AND DOWN-REGULATION OF CYCLOOXYGENASE-2 PROTEIN LEVEL IN HUMAN BREAST CANCER CELLS

RADHIKA LOGANATHAN*; KANGA RANI SELVADURAY*; KALANITHI NESARETNAM*; AMMU KUTTY RADHAKRISHNAN**,‡
DOI: https://doi.org/10.21894/jopr.2020.0082 | Published Online: 7 October 2020
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RESEARCH ARTICLE
Vol. 33 (1) March 2021, p. 151-170

LIFE CYCLE ASSESSMENT OF PALM OIL CLINKER AS A BINDER AND AGGREGATE REPLACEMENT IN CONCRETE

SAZNIZAM SAZMEE SINOH*; ZAINAH IBRAHIM* and FARIDAH OTHMAN*
DOI: https://doi.org/10.21894/jopr.2020.0081 | Published Online: 7 October 2020
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RESEARCH ARTICLE
Vol. 33 (1) March 2021, p. 140-150

LIFE CYCLE ASSESSMENT FOR THE PRODUCTION OF PALM BIODIESEL

CHEE LIANG YUNG*,**, VIJAYA SUBRAMANIAM* and SUMIANI YUSOFF‡
DOI: https://doi.org/10.21894/jopr.2020.0080 | Published Online: 7 October 2020
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RESEARCH ARTICLE
Vol. 33 (2) June 2021, p. 347-359

PHASE BEHAVIOUR OF HIGH, MEDIUM AND LOW MELTING FRACTIONS IN LAURIC FAT BLENDS FORMULATED BASED ON MELTING TRIACYLGLYCEROL GROUP

BANGUN NUSANTORO*,**; YANTY NOORZIANNA MANAF#; DAVY VAN DE WALLE*; FILIP VAN BOCKSTAELE* and KOEN DEWETTINCK*
DOI: https://doi.org/10.21894/jopr.2020.0078 | Published Online: 5 October 2020
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RESEARCH ARTICLE
Vol. 33 (1) March 2021, p. 103-118

POST-TREATMENT OF PALM OIL MILL EFFLUENT USING ZEOLITE AND WASTEWATER

HOSSEIN FARRAJI*,‡; REZA MOHAMMADPOUR*,** and NASTAEIN QAMARUZ ZAMAN*
DOI: https://doi.org/10.21894/jopr.2020.0077 | Published Online: 5 October 2020
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RESEARCH ARTICLE
Vol. 33 (1) March 2021, p. 74-83

EFFECT OF CATALYSTS ON THE YIELD AND PROPERTIES OF LIGNIN FROM MICROWAVEASSISTED ACETOSOLV EXTRACTION OF OIL PALM EMPTY FRUIT BUNCH FIBRES

MUHAMMAD NOR ARIFIN YAAKOB*, RASIDI ROSLAN*, NURJANNAH SALIM*, SITI NOOR HIDAYAH MUSTAPHA*, SARANI ZAKARIA**, CHIN-HUA CHIA** and MOHD SHAIFUL SAJAB***
DOI: https://doi.org/10.21894/jopr.2020.0076 | Published Online: 5 October 2020
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RESEARCH ARTICLE
Vol. 33 (1) March 2021, p. 21-36

POPULATION DENSITY OF Elaeidobius kamerunicus Faust IN DIFFERENT SPIKELET POSITION AT ANTHESISING MALE INFLORESCENCE OF Elaeis guineensis Jacq. IN SABAH AND SARAWAK, MALAYSIA

SAHARUL ABILLAH MOHAMAD*,**; MUHAMMAD NURUL YAQIN SYARIF*; SITI NURULHIDAYAH AHMAD*; MOHAMED MAZMIRA MOHD MASRI*; KING JIE HUNG** and NORMAN KAMARUDIN*
DOI: https://doi.org/10.21894/jopr.2020.0075 | Published Online: 8 October 2020
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RESEARCH ARTICLE
Vol. 33 (2) June 2021, p. 289-298

ODOUR EXPOSURE LEVEL MEASUREMENT SURROUNDING PALM OIL MILL

ANDREW YAP KIAN CHUNG*; NASTAEIN QAMARUZ ZAMAN**; ROHAYA MOHAMED HALIM*; FATAH YAH ABD MANAF* and NU’MAN ABDUL HADI*
DOI: https://doi.org/10.21894/jopr.2020.0073 | Published Online: 30 September 2020
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RESEARCH ARTICLE
Vol. 33 (1) March 2021, p. 129-139

FRYING OIL QUALITY IN FAST FOOD RESTAURANTS IN EAST COAST MALAYSIA: A PRELIMINARY SURVEY

NUR HAQIM ISMAIL*; AZMIL HAIZAM AHMAD TARMIZI*; NORAZURA AILA MOHD HASSIM*; SIVARUBY KANAGARATNAM* and NOOR LIDA HABI MAT DIAN*
DOI: https://doi.org/10.21894/jopr.2020.0071 | Published Online: 22 September 2020
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RESEARCH ARTICLE
Vol. 33 (1) March 2021, p. 56-63

HERBICIDE EFFECTS ON Ganoderma boninense INFECTION IN OIL PALM SEEDLINGS

SITI HAZLINA HUSSIN*; IDRIS ABU SEMAN**; MOHD HEFNI RUSLI**; MAIZATUL SURIZA MOHAMED** and ZAITON SAPAK*,#
DOI: https://doi.org/10.21894/jopr.2020.0070 | Published Online: 22 September 2020
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REVIEW ARTICLE
Vol. 33 (1) March 2021, p. 1-11

MECHANISING OIL PALM LOOSE FRUITS COLLECTION – A REVIEW

MOHD RAMDHAN KHALID*; ABD RAHIM SHUIB* and NORMAN KAMARUDIN
DOI: https://doi.org/10.21894/jopr.2020.0069 | Published Online: 22 September 2020
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RESEARCH ARTICLE
Vol. 33 (1) March 2021, p. 93-102

EXTRACTION AND PURIFICATION OF PHYTOSTEROLS MIXTURE FROM PALM FATTY ACID DISTILLATE (PFAD) USING MULTISTAGE EXTRACTION PROCESSES

NOR FAIZAH JALANI*; NOORSHAMSIANA ABDUL WAHAB*; WAN HASAMUDIN WAN HASSAN*; KAMARUDIN HASSAN*; NAHRUL HAYAWIN ZAINAL* and MOHAMAD FAIZAL IBRAHIM**
DOI: https://doi.org/10.21894/jopr.2020.0067 | Published Online: 22 September 2020
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RESEARCH ARTICLE
Vol. 33 (2) June 2021, p. 235-247

ISOLATION AND CHARACTERISATION OF GIBBERELLIN 2-OXIDASE 6 GENE FROM OIL PALM (Elaeis guineensis Jacq.)

ZATTY SYAMIMI ADURA, M S*; NURNIWALIS, A W* and ZUBAIDAH, R*
DOI: https://doi.org/10.21894/jopr.2020.0066 | Published Online: 22 September 2020
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RESEARCH ARTICLE
Vol. 33 (2) June 2021, p. 327-334

GROWTH PERFORMANCE AND CARCASS TRAITS OF GOATS FED WITH OIL PALM BYPRODUCTS BASED FEED PELLET

NUR ATIKAH IBRAHIM*; WAN NOORAIDA WAN MOHAMED*; ‘ABIDAH MD NOH* and MOOKIAH SAMINATHAN*
DOI: https://doi.org/10.21894/jopr.2020.0064 | Published Online: 22 September 2020
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RESEARCH ARTICLE
Vol. 33 (1) March 2021, p. 46-55

ESTIMATING THE YIELD LOSS OF OIL PALM DUE TO Ganoderma BASAL STEM ROT DISEASE BY USING BAYESIAN MODEL AVERAGING

ASSIS KAMU*; CHONG KHIM PHIN**; IDRIS ABU SEMAN‡; DARMESAH GABDA* and HO CHONG MUN*
DOI: https://doi.org/10.21894/jopr.2020.0061 | Published Online: 11 September 2020
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RESEARCH ARTICLE
Vol. 33 (1) March 2021, p. 12-20

A RAPID AND EFFICIENT DNA EXTRACTION PROTOCOL FOR Ganoderma zonatum, A BASAL AND UPPER STEM ROT PATHOGEN OF OIL PALM IN MALAYSIA

JAYANTHI NAGAPPAN*; FAIZUN KADRI*; CHIN CHIEW FOAN**; RICHARD M COOPER‡‡; SEAN T MAY‡; IDRIS ABU SEMAN* and ENG TI LESLIE LOW*
DOI: https://doi.org/10.21894/jopr.2020.0058 | Published Online: 11 September 2020
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SHORT COMMUNICATION
Vol. 33 (1) March 2021, p. 171-180

A REVIEW ON MALAYSIAN SUSTAINABLE PALM OIL CERTIFICATION PROCESS AMONG INDEPENDENT OIL PALM SMALLHOLDERS

PARTHIBAN KANNAN*; NUR HANANI MANSOR*; NAZIRA KHABIBOR RAHMAN*; TAN SAY PENG* and SITI MARIAM MAZLAN**
DOI: https://doi.org/10.21894/jopr.2020.0056 | Published Online: 10 September 2020
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