Glazes induced degradation of tea catechins.

ABSTRACT: In present work, the degradation behavior of tea catechins on various commercial glazes was elucidated for the first time. Four kinds of Japanese typical commercial glaze powders (Oribe /Namako/Irabo /Toumei) based on Fe/Mg /Cu /Ti oxides were utilized and deposited on ceramic tiles. Tea solution extracted from green tea leaves at 80 °C and then utilized for the examination of degradation behavior with glazes to meet a nearly identical condition in human daily tea drinking with ceramicwares. It was found that the degradation of tea catechins significantly dependent on the chemical structure of glazes, that is: Fe/Cu/Mg oxides contained glazes can promote the degradation of epigallocatechin, epicatechin, epigallocatechin gallate and epicatechin gallate, while Ti oxide contained glaze stimul

SUBMITTER: Xin Y 

PROVIDER: S-EPMC10307877 | biostudies-literature | 2023 Jun

REPOSITORIES: biostudies-literature