Sains Malaysiana 37(4):  379-382(2008)

 

Physicochemical Properties of Malaysian Jatropha curcas Seed Oil

(Pencirian  Fizikokimia Minyak Biji Jatropha curcas Malaysia)

 

Jumat Salimon & Rozaini Abdullah

Oleochemistry Programme

School of Chemical Sciences and Food Technology

Faculty of Science and Technology, Universiti Kebangsaan Malaysia

43600 Bangi, Selangor D.E, Malaysia

 

Received: 18 February 2008 / Accepted: 18 March 2008

 

 

ABSTRACT

 

Jatropha curcas oil was extracted using n-hexane as solvent in the Soxhlet extraction method. The physicochemical properties of Malaysian Jatropha curcas oil were evaluated. The result showed that the Jatropha seeds consist of 60% (dry w/w) crude oil. The physicochemical properties showed that the seed oil contained low moisture level of 0.02±0.01%, acid value (1.50±0.07%), iodine value (91.70 ± 1.44 mg/g), peroxide value (0.66±0.04 miliequivalence/kg) and saponification value of 208.5±0.47 mg/g respectively. Gas chromatography analysis showed that oleic acid (46.00±0.19%) appears as dominant fatty acid in seed oil followed by linoleic acid (31.96±0.19%) and palmitic acid (13.89±0.06%).  High performance liquid chromatography (HPLC) results showed that the dominant triacylglycerols present were PLL (22.00%), POP(16.48%), 000(16.48%), 00L(16.23%) and OLL(13.00%).

 

Keywords:  Oleic oil; Jatropha curcas

 

ABSTRAK

 

Minyak Jatropha curcas diekstrak dengan pelarut heksana dengan menggunakan kaedah pengekstrakan Soxhlet. Pencirian fizikokimia minyak Jatropha curcas Malaysia telah dilakukan.  Hasil kajian menunjukkan minyak biji Jatropha mempunyai nilai kelembapan sebanyak 0.02±0.01%, nilai keasidan (1.50±0.07%), nilai iodin (91.70 ± 1.44 mg/g), nilai peroksida (0.66±0.04 militara/kg)  dan nilai penyabunan sebanyak 208.5±0.47 mg/g. Analisis kromatografi gas menunjukkan asid oleik (46.00±0.19%) merupakan asid lemak dominan diikuti oleh asid linoleik  (31.96±0.19%) dan asid palmitik (13.89±0.06%). Keputusan kromatograpi cecair prestasi tinggi (HPLC) menunjukkan triasilgliserol, TAG yang dominan adalah PLL (22.00%), POP(16.48%), 000(16.48%), 00L(16.23%) and OLL(13.00%).

 

Kata kunci: Jatropha curcas; minyak oleik

 

 

 REFERENCES/RUJUKAN

 

Akintayo, E.T. 2004. Characteristic and composition of Parkia biglobbossa and Jatropha curcas oils and cakes.  Biosource Technology 92: 307-310.

AOCS 1997.  Official Methods of Analysis, 16th ed. Association of Official Analytical Chemist, Arlington. Cd 993.20.

Augustus, G.D., Jayabalan, M. & Seiler, G.J. 2002. Evaluation and bioinduction of energy components of Jatropha curcas. Biomass and Bioenergy 23:161-164.

Eromosele, C.O., Eromosele, P. Innazo & P. Njerim. 1997. Short communication: studies on some seeds and seed oils. Bioresour. Technology 64: 245–247.

Gübitz, G.M., Mittlebach, M. & Trabi, M. 1996. Exploitation of the tropical oil seed plant Jatropha curcas. L. International of Biosource Technology 58:77-82.

Kaushik, N., Kumar, K., Kumar, S., Kaushik, N. & Roy, S. 2007. Genetic variability and divergence studies in seed traits and oil content of Jatropha (Jatropha curcas L.) accessions. Biomass & Bioenergy 31:497-502.

Makkar, H.P.S., Becker, K., Sporer, F. & Wink, M. 1997. Studies on nutritive potential and toxic constituents of different provenances of Jatropha curcas. J. Agr. Food Chem. 45:3152-3157.

Martínez-Herrera, J., Siddhuraju, P., Francis, G., Dávila-Ortíz, G. & Becker K. 2006. Chemical composition, toxic/antimetabolic constituents, and effects of different treatments on their levels, in four provenances of Jatropha curcas L. from Mexico. Food Chemistry 96:80-89.

Ogunniyi, D.S. 2006. Castor oil: A vital industrial raw material. Biosource Technology 97: 1086-1091.

Porim Test Methods. 1995. Palm Oil Research Institute of Malaysia, p.203.

 

 

 

previous