Physicochemical characteristics of tropical Jatropha curcas seed oil

Jumat Salimon, Ahmed Waled Abdo

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

The oil fraction of Jatropha curcas seeds from Malaysia, Indonesia and India were extracted by using cold press method. Their chemical and physical properties such as oil content, % water, specific gravity at 28°C, refractive index at 25°C, colour at 28°C, viscosity at 28°C, iodine value, acid value, triacylglycerol (tag) composition, free fatty acid, saponification, and unsaponifiable value were examined. The results showed that the Malaysian seed sample contained high oil percentage, 33.7%. On the other hand, the oil content from Indonesian and Indian seeds were 32.7% and 30.5%, respectively. Thephysicochemicalproperties showed iodine value of 103.2,99.8 and 97.9, acid value of 2.4,9.9 and 7.6, FFA% of 1.68%, 6.99% and 5.35%, saponification value of 197.8,183.2 and 156.2 and unsaponifiable value of 1.99%, 2.15% and 2.35% for Malaysian, Indonesian and Indian crude oil respectively. Although, the percentage of the TAGs and fatty acids of tropical Jatropha curcas oil were different, both oleic (43.5%-43.8%) and linoleic (33.1%-34.7%) acids were detected as the dominant unsaturated fatty acids, while palmitic (14.7%-14.9%) and stearic (7.0%-7.2%) acids were the saturated fatty acids found in the oil. Unlike most Jatropha curcas oils, tropical Jatropha curcas oil also contained palmitolic acid (0.8%) as part of minor fatty acids in the oil. Polyunsaturated TAG Ss of pll, ool and oll were the major TAG s found in the tropical Jatropha curcas oil.

Original languageEnglish
Pages (from-to)313-317
Number of pages5
JournalSains Malaysiana
Volume41
Issue number3
Publication statusPublished - Mar 2012

Fingerprint

Jatropha curcas
seed oils
oils
iodine value
saponification
acid value
acids
seeds
lipid content
fatty acids
refractive index
specific gravity
unsaturated fatty acids
Malaysia
saturated fatty acids
Indonesia
free fatty acids
physical properties
viscosity
physicochemical properties

Keywords

  • Chemical properties
  • Triacylglycerol profile
  • Tropical Jatropha curcas

ASJC Scopus subject areas

  • General

Cite this

Physicochemical characteristics of tropical Jatropha curcas seed oil. / Salimon, Jumat; Abdo, Ahmed Waled.

In: Sains Malaysiana, Vol. 41, No. 3, 03.2012, p. 313-317.

Research output: Contribution to journalArticle

Salimon, Jumat ; Abdo, Ahmed Waled. / Physicochemical characteristics of tropical Jatropha curcas seed oil. In: Sains Malaysiana. 2012 ; Vol. 41, No. 3. pp. 313-317.
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abstract = "The oil fraction of Jatropha curcas seeds from Malaysia, Indonesia and India were extracted by using cold press method. Their chemical and physical properties such as oil content, {\%} water, specific gravity at 28°C, refractive index at 25°C, colour at 28°C, viscosity at 28°C, iodine value, acid value, triacylglycerol (tag) composition, free fatty acid, saponification, and unsaponifiable value were examined. The results showed that the Malaysian seed sample contained high oil percentage, 33.7{\%}. On the other hand, the oil content from Indonesian and Indian seeds were 32.7{\%} and 30.5{\%}, respectively. Thephysicochemicalproperties showed iodine value of 103.2,99.8 and 97.9, acid value of 2.4,9.9 and 7.6, FFA{\%} of 1.68{\%}, 6.99{\%} and 5.35{\%}, saponification value of 197.8,183.2 and 156.2 and unsaponifiable value of 1.99{\%}, 2.15{\%} and 2.35{\%} for Malaysian, Indonesian and Indian crude oil respectively. Although, the percentage of the TAGs and fatty acids of tropical Jatropha curcas oil were different, both oleic (43.5{\%}-43.8{\%}) and linoleic (33.1{\%}-34.7{\%}) acids were detected as the dominant unsaturated fatty acids, while palmitic (14.7{\%}-14.9{\%}) and stearic (7.0{\%}-7.2{\%}) acids were the saturated fatty acids found in the oil. Unlike most Jatropha curcas oils, tropical Jatropha curcas oil also contained palmitolic acid (0.8{\%}) as part of minor fatty acids in the oil. Polyunsaturated TAG Ss of pll, ool and oll were the major TAG s found in the tropical Jatropha curcas oil.",
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