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Effects of filtration through activated carbons on peroxide, thiobarbituric acid and carbonyl values of autoxidized soybean oil
Author(s) -
Boki Keito,
Wada Tetsuyuki,
Ohno Shinsaku
Publication year - 1991
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/bf02660150
Subject(s) - chemistry , peroxide value , soybean oil , peroxide , thiobarbituric acid , tocopherol , adsorption , activated carbon , chromatography , acid value , organic chemistry , food science , antioxidant , biochemistry , vitamin e , lipid peroxidation
Effects of filtration bleaching on peroxide value (PV), thiobarbituric acid value (TAV) and carbonyl value (CV) of autoxidized soybean oil were investigated by using twenty‐three kinds of activated carbon in order to improve oil quality. From the decreases in PV, TAV and CV and from the physical and chemical properties of activated carbons, it was suggested that hydroperoxides, aldehydes and ketones were adsorbed on the acid sites distributed over the surface or within the pores of the activated carbons while the autoxidized soybean oil flowed through the packed column. The residual tocopherols in autoxidized soybean oil and treated soybean oil were determined during storage. The decrease in oxidative stability of treated soybean oil seemed to be caused by elimination of α ‐, β ‐and γ ‐tocopherols. δ ‐Tocopherol was chemically more stable than α ‐, β ‐ and γ ‐tocopherols in autoxidized soybean oil.