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ANTIOXIDATIVE EFFECT of ISUBGOL IN MODEL and IN LIPID SYSTEM 1
Author(s) -
MEHTA RAJESH L.,
ZAYAS JOSEPH F.,
YANG SHEESHIEN
Publication year - 1994
Publication title -
journal of food processing and preservation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.511
H-Index - 48
eISSN - 1745-4549
pISSN - 0145-8892
DOI - 10.1111/j.1745-4549.1994.tb00266.x
Subject(s) - chemistry , antioxidant , linoleic acid , food science , peroxide , lipid oxidation , plantago ovata , soybean oil , conjugated linoleic acid , extraction (chemistry) , chromatography , botany , biochemistry , fatty acid , organic chemistry , biology
Eight separate solvent systems were used to determine which was most effective and rapid for extraction of antioxidants from seeds of isubgol ( Plantago ovata ); methanolic extracts showed the highest antioxidative power. Effectiveness was tested in a model system of linoleic acid and in a lipid system of soybean oil stored at 32C and 60C and heated at 180C. the methanolic extracts of isubgol tested in emulsified linoleic acid showed no marked decrease in oxidation compared to the control, as measured by coupled oxidation with β‐carotene, conjugated dienes (CD) values, and TBA‐test. the extracts in soybean oil did not produce significantly lower peroxide values, lower CD, or higher 18:2/16:0 ratios than the control during storage and heating tests. Thus, isubgol is not a potential source of natural antioxidant.