The polyphenolic composition of 62 wild and weedy Mexican bean collections from diverse origins, grouped by their seed coat color, was assessed. According to spectrophotometric analysis, the range of total phenols, condensed tannins, and total anthocyanins presented wide differences. Furthermore, the phenolic acid, flavonoid, and anthocyanin profiles were analyzed using HPLC. Ferulic was the main phenolic acid. Kaempferol and quercetin were the main flavonoids, and the isoflavones daidzein and coumestrol were found in only low levels in few collections. Delphinidin was the main anthocyanidin found, followed by petunidin, cyanidin, malvidin, pelargonidin, and peonidin. The wide variation observed in polyphenolic contents was more related to their genotype than to the color factor. These results show that some wild and weedy beans are good sources of phenolic compounds for use in breeding programs focused on nutrition and health.

Soybean [Glycine max (L.) Merr.] seed isoflavone concentration 1999). Studies with humans (Crouse et al., 1999) and has been shown to be highly dependent on environmental conditions, monkeys (Anthony et al., 1997) show that isoflavonebut isoflavone concentrations have not been studied under controlled conditions to quantify the effects of specific factors. To determine rich soy protein isolates are more effective than purified the effect of air temperature and soil moisture status during soybean isoflavones for lowering blood cholesterol. The soybean seed development on seed isoflavone concentration and composition, isoflavones daidzein, genistein, and glycitein occur presoybean plants were grown in the greenhouse under intermediate dominantly as glucosides or malonylglucosides (Ohta et (18/28؇C), 9.5 h night/14.5 h daytime temperatures with high soil al., 1979) and are associated with the protein fraction moisture conditions. Beginning at the R6 growth stage plants were during processing. Due to the health benefits there is subjected to either intermediate (18/28؇C), low (13/23؇C), or high an increased interest in soy foods in the USA and other (23/33؇C) 9.5 h night/14.5 h daytime temperatures with either low or parts of the world. high soil moisture conditions. Two French cultivars, Imari and Queen, Several studies have shown that there is a large variaand three U.S. cultivars, Dwight, Jack and Loda, all in maturity group

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