High-Speed Analysis of Methylated Catechin in Benifuuki Green Tea

Introduction

It has been reported that "Food with Function Claims" Benifuuki green tea contains a large amount of methylated catechin as an antiallergic functional ingredient. Methylated catechin is a kind of polyphenol which is contained in tea leaves, and is a partially methylated form of epigallocatechin gallate. It has also been reported that methylated catechin alleviates the discomfort of the eyes and nose caused by house dust and other forms of dust. In 2018, “Determination of the O-methylated Catechin in ‘Benifuuki’ Green Tea (Camellia sinensis L.) - High-performance liquid chromatographic method” was established as a Japanese Agricultural Standard (JAS) based on Japan’s Act on Standardization and Proper Quality Labeling of Agricultural and Forestry Products (JAS Law). This article introduces applications of analysis of methylated catechin in Benifuuki green tea leaves based on the JAS method and its high-speed analysis, using a Nexera^TM X3 and Shim-pack^TM GIST Series columns.

October 10, 2019 GMT