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An investigation of rice bran oil tank settling
Author(s) -
Belavadi V. K.,
Bhowmick D. N.
Publication year - 1988
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/bf02636408
Subject(s) - wax , settling , bran , hydrolysis , chemistry , chromatography , fraction (chemistry) , carnauba wax , monomer , organic chemistry , materials science , chemical engineering , raw material , environmental science , environmental engineering , engineering , polymer
A wax‐like settling is observed in tanks in which rice bran oil is stored. “Soft” and “hard” wax fractions have been isolated from this settling by solvent Crystallization. Previous investigation has shown that the settling consists mainly of wax esters of long chain alcohols and long chain fatty acids. The present work describes the column chromatographic analysis of unhydrolyzed tank settling. The presence of an aromatic moiety is indicated in the infra red spectrum. Comparison of data obtained by analysis of the tank settling before and after hydrolysis shows that it contains only 33% of monomeric esters; the remainder may be present as a polymeric ester, as found in carnauba wax. Investigation of different samples of rice bran oil has shown that the ratio of monomeric to polymeric fraction varies with the history of the bran.