title: Polyphenols in wild and weedy Mexican common beans (Phaseolus vulgaris L.).
abstract: 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.
authors.affiliation: Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Unidad Irapuato, Km 9.6 Libramiento Norte, Carr. Irapuato-León, P.O. Box 629, Irapuato, Gto. 36500, México.
authors.forename: L Gabriela
authors.initials: LG
authors.lastname: Espinosa-Alonso
authors.forename: Anatoly
authors.initials: A
authors.lastname: Lygin
authors.forename: Jack M
authors.initials: JM
authors.lastname: Widholm
authors.forename: Maria E
authors.initials: ME
authors.lastname: Valverde
authors.forename: Octavio
authors.initials: O
authors.lastname: Paredes-Lopez
mesh_terms: D000872:Anthocyanins / Q000032:analysis; D002851:Chromatography, High Pressure Liquid; D005419:Flavonoids / Q000032:analysis*; D027805:Phaseolus / Q000737:chemistry*; D010636:Phenols / Q000032:analysis*; D010858:Pigmentation; D059808:Polyphenols; D012639:Seeds / Q000737:chemistry*; D013053:Spectrophotometry; D013634:Tannins / Q000032:analysis
chemical_list: D000872:Anthocyanins; D005419:Flavonoids; D010636:Phenols; D059808:Polyphenols; D013634:Tannins