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Isolation of 9,10‐Dihydroxystearic acid from sal ( Shorea robusta ) fat
Author(s) -
Reddy S. Yella,
Prabhakar J. V.
Publication year - 1987
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1007/bf02546260
Subject(s) - fractionation , silica gel , stearic acid , chemistry , chromatography , palmitic acid , adsorption , shorea robusta , yield (engineering) , arachidic acid , oleic acid , solvent , fatty acid , botany , organic chemistry , biology , biochemistry , materials science , metallurgy
9,10‐Dihydroxystearic acid and its triglycerides (DHS‐TGs) were isolated from sal fat by silica gel adsorption and solvent and dry fractionation processes, followed by crystallization. Silica gel adsorption gave a higher yield of DHS‐TGs than the other two fractionation processes. However, the dry fractionation process was found to be comparatively easy to carry out. 9,10‐Dihydroxystearic acid was isolated and identified by TLC, GLC, M.P. and IR‐spectrometry. The DHS‐TGs were found to contain 30.5% 9,10‐dyhydroxystearic, 57.5% stearic, 6.0% palmitic and 5.8% arachidic acids. These processes were found to be useful for recovery of DHS‐TGs and also to improve the solidification properties of sal fat required for confectionery.