Isoflavone Content of Kansas Soybeans

Isoflavone Content of Kansas Soybeans

Isoflavones occurring in soybean seed have been thought to have a positive effect on the health of humans, especially in cancer prevention. This positive impact may be a result of their antioxidant properties, estrogenic activity, or a combination of mechanisms. The purpose of this study was to quantify and compare different levels of isoflavones in various Kansas soybean cultivars. Seeds of fo...

Gene Expression and Isoflavone Concentrations in Soybeans Treated with Chitosan

Isoflavones in soybean seeds have putative health-beneficial effects. Previous studies demonstrated that foliar application of chitosan could increase soybean isoflavone concentrations. In this study we determined the impact of different chitosan solutions on gene expression and isoflavone concentrations of two soybean cultivars [AC Orford (low isoflavone cultivar) and AC Proteina (high isoflav...

Isoflavone Content and Composition in Soybean

HPLC quantification of sphingolipids in soybeans with modified palmitate content.

Efficient separation and accurate quantification of sphingolipids (SL) are important for studying SL concentrations and biological functions. The objectives of this study were to develop effective methods for the separation and quantification of SL and to determine the relationship between palmitate and SL contents of mature soybean seeds. Methods using column chromatography and high-performanc...

Protein and Oil Content of Soybeans Received at Country Elevators

Soybeans received at 12 central Iowa elevators in 1985-1987 were analyzed for protein and oil content. The standard deviation among deliveries to an individual elevator was 1.0 and 0.5 percentage points for protein and oil, respectively. About 15% of samples were above average in both nutrients. About 15% were below average in both nutrients. The rest were above average in one and below average...