Mechanistic studies of hydrogen-peroxide-mediated anthocyanin oxidation
作者:Ryuya Satake、Emiko Yanase
DOI:10.1016/j.tet.2018.09.012
日期:2018.10
range of solvents. The reaction products had chemical structures identical to those formed by the reaction of this compound with the alkylperoxyl radical 2,2ʹ-azobis(2,4-dimethyl)valeronitrile. A plausible oxidation mechanism was proposed based on the obtained reaction products, and this mechanism was confirmed by HPLC–MS experiments using 18O-labeled reagents. Further, the reaction conditions were found
Novel oxidation products of cyanidin 3-O-glucoside with 2,2′-azobis-(2,4-dimethyl)valeronitrile and evaluation of anthocyanin content and its oxidation in black rice
作者:Haruna Kamiya、Emiko Yanase、Shin-ichi Nakatsuka
DOI:10.1016/j.foodchem.2014.01.077
日期:2014.7
The radical oxidation mechanism of anthocyanin derivatives was investigated by the reaction of cyanidin 3-O-glucoside in the presence of radical initiator 2,2′-azobis-(2,4-dimethyl)valeronitrile (AMVN) in EtOH and aqueous CH3CN. Six different oxidationproducts were isolated, depending on the solvent employed. These products were identified using NMR spectroscopy and multistep derivatisation reactions