Category: Vol. 37 (4) December 2025

(15 Articles)

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REVIEW ARTICLE
Vol. 37 (4) December 2025, p. 581-597

PREVALENCE OF WORK-RELATED MUSCULOSKELETAL DISORDERS (WMSDs) AND RECENT INITIATIVES TO ADDRESS THEM IN THE OIL PALM INDUSTRY: A SYSTEMATIC REVIEW

‘UMAR MOHAMAD NOOR1 and MOHAMAD IKHWAN ZAINI RIDZWAN1*
DOI: https://doi.org/10.21894/jopr.2024.0048  |   Published Online: 17 October 2024
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REVIEW ARTICLE
Vol. 37 (4) December 2025, p. 598-616

GREENING THE PALM OIL INDUSTRY: PROSPECTS AND BARRIERS OF SUPERCRITICAL CO2 EXTRACTION

DWILA NUR RIZKIYAH1; NICKY RAHMANA PUTRA1,2; LAILATUL QOMARIYAH3*; MOHD AZIZI CHE YUNUS1; HASMADI MAMAT4,5; AHMAD HAZIM ABDUL AZIZ4,5; JUMAKIR JUMAKIR6; WALUYO WALUYO6 and SUPARWOTO SUPARWOTO6
DOI: https://doi.org/10.21894/jopr.2024.0038  |   Published Online: 3 July 2024
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RESEARCH ARTICLE
Vol. 37 (4) December 2025, p. 617-626

EFFECT OF PLANTING DENSITY, PROGENY LINEAGE AND NITROGEN FERTILISER ON OIL PALM PERFORMANCE ON ALLUVIAL SOIL

AFANDI, A M1; NORLIYANA, Z Z1*; NORDIANA, A A1; MARHALIL, M1; MEILINA, O A1; FARAWAHIDA, M D1 and HALIMATUL, S A1
DOI: https://doi.org/10.21894/jopr.2024.0031  |   Published Online: 14 May 2024
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RESEARCH ARTICLE
Vol. 37 (4) December 2025, p. 627-634

LIFE CYCLE, FOLIAR CONSUMPTION RATE, NATURAL ENEMIES AND POPULATION FLUCTUATION OF Phobetron hipparchia CRAMER, 1777 (LEPIDOPTERA: LIMACODIDAE): AN EMERGING PEST OF OIL PALM IN COLOMBIA

CARLOS ENRIQUE BARRIOS-TRILLERAS1; ROBERTO JOSÉ DIAZ-CASTRO1; LEIDY JOHANNA CONTRERAS-ARIAS1 and ANUAR MORALES-RODRÍGUEZ1*
DOI: https://doi.org/10.21894/jopr.2024.0046  |   Published Online: 20 September 2024
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RESEARCH ARTICLE
Vol. 37 (4) December 2025, p. 635-645

GENOME SURVEY AND PRELIMINARY GENOMIC CHARACTERISATION OF A KEY OIL PALM POLLINATOR, Elaeidobius kamerunicus

NABEEL ATA1; MOHD AMIN AB HALIM1; MUHAMMAD NURUL YAQIN SYARIF1; SAHARUL ABILLAH MOHAMAD1; MUHAMMAD DZULHELMI MUHAMMAD NASIR2; SIEW-ENG OOI1 and MEILINA ONG-ABDULLAH1*
DOI: https://doi.org/10.21894/jopr.2024.0039  |   Published Online: 21 August 2024
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RESEARCH ARTICLE
Vol. 37 (4) December 2025, p. 646-657

MULTIDIMENSIONAL ANALYSIS SUSTAINABILITY OF CORN-SOYBEAN INTERCROPPING MODEL IN SMALLHOLDER OIL PALM REPLANTING

SRI AMBAR KUSUMAWATI1; AGUSTINUS N KAIRUPAN2*; RACHMIWATI YUSUF3; NURHAYATI4; IDA NUR ISTINA5; F FATHURRAHMAN5; HERY WIDYANTO6; PARLIN HALOMOAN SINAGA3; TENGKU HARUNUR RASYID7 and MEVIE LINTANG8
DOI: https://doi.org/10.21894/jopr.2024.0055  |   Published Online: 27 November 2024
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RESEARCH ARTICLE
Vol. 37 (4) December 2025, p. 670-683

SEPARATION AND THERMAL MODIFICATION OF MONTMORILLONITE FROM TANAH DATAR CLAY AND ITS CATALYTIC APPLICATION IN BIODIESEL PRODUCTION FROM WASTE FRYING OILS

ZARNIDA WIDIA NENGSIH1; RAHAYU RAHAYU1; SYUKRI ARIEF1; UPITA SEPTIANI1; MATLAL FAJRI ALIF1 and SYUKRI SYUKRI1*
DOI: https://doi.org/10.21894/jopr.2024.0041  |   Published Online: 2 September 2024
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RESEARCH ARTICLE
Vol. 37 (4) December 2025, p. 684-695

A BIOMECHANICAL ANALYSIS ON WORKRELATED MUSCULOSKELETAL DISORDERS USING A MECHANISED CHAINSAW FOR OIL PALM HARVESTING

UMESH GANESH1; ZAIDI MOHD RIPIN1; WAN MOHD AMRI WAN MAMAT ALI1; YEO YING HENG1; MITCHELLE LAW JYY JINN1; JEEVINTHIRAN KARUNAGARAN1 and MOHAMAD IKHWAN ZAINI RIDZWAN1*
DOI: https://doi.org/10.21894/jopr.2024.0045  |   Published Online: 19 September 2024
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RESEARCH ARTICLE
Vol. 37 (4) December 2025, p. 696-706

ENCAPSULATED ACIDIC ASPIRIN-BASED EUTECTIC SOLVENTS FOR ESTERIFICATION OF FREE FATTY ACID

ADEEB HAYYAN1,2*; JIAN LING LEONG1; ANDREW T H YEOW1,2; HANEE F. HIZADDIN1,2; YOUSEF MOHAMMED ALANAZI3; JEHAD SALEH3; BARUN KUMAR CHAKRABARTI4; CHEE TONG JOHN LOW5 and SHARIFAH SHAHIRA SYED PUTRA1
DOI: https://doi.org/10.21894/jopr.2024.0047  |   Published Online: 30 September 2024
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RESEARCH ARTICLE
Vol. 37 (4) December 2025, p. 707-718

INVESTIGATION ON MECHANICAL AND CORROSION CHARACTERISTICS OF ASME SA 516 GRADE 70 CARBON STEEL USED IN A BIODIESEL STORAGE FACILITY

NUR NAQIUDDIN MDD NORDIN1*; MOHD NASHRUL MOHD ZUBIR1*; SALIM NEWAZ KAZI1 and NURIN WAHIDAH MOHD ZULKIFLI1
DOI: https://doi.org/10.21894/jopr.2024.0044  |   Published Online: 9 September 2024
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RESEARCH ARTICLE
Vol. 37 (4) December 2025, p. 719-728

INSIGHT INTO FATTY ACID-AMINO ACIDS INTERACTIONS IN LIPASE ENZYME CATALYSIS OF TRANSESTERIFICATION REACTION OF PALM OIL USING DENSITY FUNCTIONAL THEORY B3LYP 6-31G(D,P)

RADIAH ALI1; ALYZA AZZURA AZMI1 and SABIQAH TUAN ANUAR1*
DOI: https://doi.org/10.21894/jopr.2024.0056  |   Published Online: 27 November 2024
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RESEARCH ARTICLE
Vol. 37 (4) December 2025, p. 741-750

DIETARY INCLUSION OF CRUDE PALM OIL, RED PALM OIL, REFINED PALM OIL, PALM KERNEL OIL AND SOYBEAN OIL ON MODULATION OF INTESTINAL BARRIER INTEGRITY AND IMMUNITY IN LAYING HENS

WAN IBRAHIM IZUDDIN1; TECK CHWEN LOH1,2*; NAZRI NAYAN1,2; HOOI LING FOO3,4 and HENNY AKIT1,4
DOI: https://doi.org/10.21894/jopr.2025.0014  |   Published Online: 7 March 2025
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SHORT COMMUNICATION
Vol. 37 (4) December 2025, p. 751-756

MOLECULAR IDENTIFICATION OF A MEALYBUG SPECIES (HEMIPTERA: PSEUDOCOCCIDAE) INFESTING AN OIL PALM PLANTATION IN TAWAU, SABAH

NURHAFIZHOH ZAINUDDIN1*; MUHAMMAD NURUL YAQIN SYARIF1; SHAMSILAWANI AHAMED BAKERI1; ZAHIDAH AYOB1 and MOHAMED MAZMIRA MOHD MASRI1
DOI: https://doi.org/10.21894/jopr.2024.0051  |   Published Online: 8 November 2024
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