Grasas y Aceites, Vol 42, No 3 (1991)

Glyceride structure and sterol composition of SOS-7 halophyte oil


https://doi.org/10.3989/gya.1991.v42.i3.1246

S. M. El-Shami
Fats and Oils Dept., National Research Centre. Dokki, Cairo, Egypt

Abstract


Glyceride structure of SOS-7 halophyte oil was studied using the lipase hydrolysis technique. This halophyte sample was obtained from 1988 harvest planted in Ghardaka, on the border of the Red Sea, Egypt. The oilseed was ground and extracted for its oil using commercial hexane in Soxhlet extractor. The unsaturated fatty acids were found centralized in the 2-position of triglycerides, whereas oleic and linolenic acids showed more preference for this position. It was found that P3 was the major component of GS3, whereas P2L and PStL; PL2, POL and StL2 are predominating among GS2U and GSU3 respectively. L3 manifested itself as the principal constituent of GU3 type.
Sterol composition of the halophyte oil was determined by GLC as TMS derivative. It was found that the oil contains campsterol, β-sitosterol, stigmasterol and 7-stigmasterol of which 7-stigmasterol is the major sterol and constitute 52.4%.

Keywords


Glyceride (structure); SOS-7 halophyte oil; Sterol (composition in)

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