METHOD FOR SELECTING RAW MATERIAL FOR TEA BEVERAGE AND METHOD FOR PRODUCING TEA BEVERAGE

摘要

PROBLEM TO BE SOLVED: To provide a method for selecting a raw material for a tea beverage suitable for producing the tea beverage without producing secondary sediments even when preserved over a long period.;SOLUTION: The raw material tea is selected by using a concentration of contained strictinin in tea leaves as an index. Specifically, the tea leaves are extracted with any of hot water, acidic hot water, an organic solvent, an acidic organic solvent, a hydrous organic solvent and an acidic hydrous organic solvent and the concentration of the contained strictinin in the extract liquid is measured to select the raw material tea within a prescribed range or below of the concentration of the contained strictinin. The strictinin contained in the tea extract liquid or a tea mixed liquid is decomposed into ellagic acid to be a nucleus of the secondary sediments by thermal sterilization. Thereby, the raw material tea without producing the secondary sediments can be provided by carrying out selection using the concentration of the contained strictinin as the index.;COPYRIGHT: (C)2003,JPO