Polyamines of Kyoto Vegetables and Uji tea

Abstract

Among Kyoto vegetables, Manganji sweet pepper, Tanba black soybean-originated Murasaki zukin and Kyonatsu zukin, and Uji green tea were found to contain a large amount of spermidine. Uji green tea also contains spermine. However, not all of the spermidine and spermine are extracted when sencha or gyokuro is extracted with hot water. Spermidine and spermine contained in tea leaves were extracted well when treated with artificial gastric juice, so it is expected that a new way of consuming whole tea leaves will be devised.