title: Major phenolic compounds, antioxidant capacity and antidiabetic potential of rice bean (Vigna umbellata L.) in China.
abstract: Interest in edible beans as nutraceuticals is increasing. In the present study, the individual phenolic acids, the total phenolic content (TPC), the total flavonoid content (TFC), and the antioxidant and antidiabetic potential of 13 varieties of rice beans from China were investigated. Eight phenolic compounds (catechin, epicatechin, p-coumaric acid, ferulic acid, vitexin, isovitexin, sinapic acid, quercetin) were analyzed on an ultra-performance liquid chromatography (UPLC) mass spectrometry (MS) system. The rice bean varieties had significant differences in total phenolic compounds (ranging from 123.09 ± 10.35 to 843.75 ± 30.15 μg/g), in TPC (ranging from 3.27 ± 0.04 to 6.43 ± 0.25 mg gallic acid equivalents (GAE)/g), in TFC (ranging from 55.95 ± 11.16 to 320.39 ± 31.77 mg catechin (CE)/g), in antioxidant activity (ranging from 39.87 ± 1.37 to 46.40 ± 2.18 μM·TE/g), in α-glucosidase inhibition activity (ranging from 44.32 ± 2.12 to 68.71 ± 2.19) and in advanced glycation end products formation inhibition activity (ranging from 34.11 ± 0.59 to 75.75 ± 0.33). This study is the first report on phytochemistry and biological activities in rice beans.
authors.affiliation: Institute of Crop Science, Chinese Academy of Agricultural Sciences, South Xueyuan Road, Haidian District No.80, Beijing 100081, China.
authors.forename: Yang
authors.initials: Y
authors.lastname: Yao
authors.affiliation: Institute of Crop Science, Chinese Academy of Agricultural Sciences, South Xueyuan Road, Haidian District No.80, Beijing 100081, China.
authors.forename: Xu-Zhen
authors.initials: XZ
authors.lastname: Cheng
authors.affiliation: Institute of Crop Science, Chinese Academy of Agricultural Sciences, South Xueyuan Road, Haidian District No.80, Beijing 100081, China.
authors.forename: Li-Xia
authors.initials: LX
authors.lastname: Wang
authors.affiliation: Institute of Crop Science, Chinese Academy of Agricultural Sciences, South Xueyuan Road, Haidian District No.80, Beijing 100081, China.
authors.forename: Su-Hua
authors.initials: SH
authors.lastname: Wang
authors.affiliation: Institute of Crop Science, Chinese Academy of Agricultural Sciences, South Xueyuan Road, Haidian District No.80, Beijing 100081, China.
authors.forename: Guixing
authors.initials: G
authors.lastname: Ren
mesh_terms: D000818:Animals; D000975:Antioxidants / Q000494:pharmacology*; D002681:China; D007887:Fabaceae / Q000737:chemistry*; D005419:Flavonoids / Q000032:analysis; D017127:Glycation End Products, Advanced / Q000378:metabolism; D007004:Hypoglycemic Agents / Q000494:pharmacology*; D010636:Phenols / Q000032:analysis / Q000494:pharmacology*; D064209:Phytochemicals / Q000032:analysis; D051381:Rats; D000520:alpha-Glucosidases / Q000378:metabolism
chemical_list: D000975:Antioxidants; D005419:Flavonoids; D017127:Glycation End Products, Advanced; D007004:Hypoglycemic Agents; D010636:Phenols; D064209:Phytochemicals; D000520:alpha-Glucosidases