Selected Odor Compounds in Soymilk As Affected by Chemical Composition and Lipoxygenases in Five Soybean Materials
- 16 December 2006
- journal article
- Published by American Chemical Society (ACS) in Journal of Agricultural and Food Chemistry
- Vol. 55 (2), 426-431
- https://doi.org/10.1021/jf062274x
Abstract
Protein, fat content, and beany odor affect consumers' choice of soy foods. Our objective was to characterize protein, lipid, and lipoxygenase activities and fatty acid compositions in food soybeans and to determine how chemical composition and enzyme activities related to the generation of beany odor components, including hexanal, hexanol, trans-2-nonenal, 1-octen-3-ol, and trans-2,trans-4-decadienal in soymilk. Protein, lipid, and fatty acid compositions and lipoxygenase activities of five soybean materials, including Proto, IA2032, IA 2064, IA3017, and L-Star varieties, were analyzed. Soymilk was prepared by a traditional method involving soaking, grinding, and cooking processes. Selected odor compounds in raw and cooked soymilk were analyzed by solid-phase microextraction and gas chromatography. Results showed that soybeans differed in crude protein and lipid content, lipoxygenase activities, and fatty acid compositions. L-Star had the highest and Proto the lowest lipid content among the five soybean cultivars. Protein content, lipoxygenases, and linoleic acid were positively correlated with beany odor content in soymilk made from the selected soybean materials. After boiling for 20 min, the soymilk made from L-Star and IA2032 retained the lowest odor profiles among the soymilk products made from the five selected materials. Keywords: Soymilk flavor; lipid; fatty acid; protein; lipoxygenasesKeywords
This publication has 13 references indexed in Scilit:
- Bowman–Birk inhibitors in soybean seed coatsIndustrial Crops and Products, 2001
- Sensory Descriptive Analysis of SoymilkJournal of Food Science, 2001
- Colorimetric Method for the Determination of Lipoxygenase ActivityJournal of Agricultural and Food Chemistry, 2000
- Effect of Soybean Lipoxygenase on Sensory Taste of Tofu.Nippon Shokuhin Kagaku Kogaku Kaishi, 1998
- DETBA Value and Hexanal Production with the Combination of Unsaturated Fatty Acids and Extracts Prepared from Soybean Seeds Lacking Two or Three Lipoxygenase IsozymesJournal of Agricultural and Food Chemistry, 1996
- Aroma Constituents of Soybean [Glycine max (L.) Merril] Milk Lacking Lipoxygenase IsoenzymesJournal of Agricultural and Food Chemistry, 1995
- Comparative Study on the Lipoxygenase Activities of Some Soybean CultivarsJournal of Agricultural and Food Chemistry, 1995
- Effect of hot water treatment on flavor of soymilk.NIPPON SHOKUHIN KOGYO GAKKAISHI, 1990
- LipoxygenasesPhysiologia Plantarum, 1989
- Soy flavor and its improvementCritical Reviews in Food Science and Nutrition, 1988