Anaerobically Treated Tea and Its Hypotensive Effects

JARQ : Japan Agricultural Research Quarterly
ISSN 00213551
書誌レコードID(総合目録DB) AA0068709X

The present paper deals with an aero bi call y treated tea called "Gabaron tea''. In the tea I eaves stored under anaerobic conditions, γ-arninobutyric acid (GABA) and alanine increased considerably, while glutarnic acid and aspartic acid decreased. Based on the result of 15N-glutarnic acid feeding experiment for tea leaves, it is presumed that glutarnic acid may be a source of nitrogen for the increased GABA and alanine. Ga baron tea is manufactured from green tea leaves which are stored under anaerobic conditions to increase GABA, a hypotensive compound. Although Gabaron tea has an undesirable odor, the major taste component of green tea shows small differences. When Gabaron tea is orally given to spontaneously hypertensive rats, their blood pressure decreased significantly as compared with the common green tea and the deionized water group. It is concluded that anaerobic conditions under appropriate time and temperature provide an improved tea containing a large amount of GABA with a relatively good quality. !tis estimated that an adequate firing with 110-120℃ is effective in reducing the undesirable odor of the Gabaron tea.

作成者 Katsuhiro HAKAMATA
国立情報学研究所メタデータ主題語彙集(資源タイプ) Journal Article
開始ページ 105
終了ページ 110
言語 eng