著者

津志田 藤二郎 村井 敏信 大森 正司 岡本 順子

出版者

Japan Society for Bioscience, Biotechnology, and Agrochemistry

雑誌

日本農芸化学会誌 (ISSN:00021407)

巻号頁・発行日

vol.61, no.7, pp.817-822, 1987

被引用文献数

33 45

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(1) 茶葉を窒素ガスや炭酸ガスのなかに入れ,嫌気的条件に置いたところ, γ-アミノ酪酸とアラニンが増加しグルタミン酸とアスパラギン酸が減少した.一方,テアニンやカフェイン,タンニン含量は変動しなかった.<br> (2) γ-アミノ酪酸は血圧降下作用を示す成分であるといわれることから,窒素ガス処理を行った茶葉で緑茶を製造した.その結果,一番茶,二番茶,三番茶ともにγ-アミノ酪酸含量が150mg/100g以上になった.<br> (3) ウーロン茶,紅茶のγ-アミノ酪酸含量は,茶葉を萎凋する前に窒素ガス処理するより,萎凋後に窒素ガス処理するほうが高くなった.<br> (4) 窒素ガス処理した茶葉から製造した茶は独特な香りを持っていたので, GC-MSで香気成分を分析,同定したところ,窒素ガス処理しないで製造した茶に比べて,脂肪酸のメチルやエチルエステルが増加していた.しかし,これらの成分の臭いは窒素ガス処理した茶が持つ香りとは,異なっていた.

著者

大森 正司 矢野 とし子 岡本 順子 津志田 藤二郎 村井 敏信 樋口 満

出版者

公益社団法人 日本農芸化学会

雑誌

日本農芸化学会誌 (ISSN:00021407)

巻号頁・発行日

vol.61, no.11, pp.1449-1451, 1987-11-15 (Released:2009-02-18)

参考文献数

7

被引用文献数

74 87

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This study was conducted to investigate the effects of green tea made from leaves incubated in an anaerobic condition (Gabaron tea) on the blood pressure of spontaneously hypertensive rats (SHR). No difference was found in the mean body weight of the control groups (first group, fed on water; second group, fed on ordinary green tea) and the experimental group (third group, fed on Gabaron tea) throughout the test period. The mean blood pressure of the three groups was identical at 160 mmHg in the pre-test period. The mean blood pressure of the experimental group was 158 mmHg, whereas the control groups shared 163_??_167 mmHg one week after the experiment started. The blood pressure of the experimental group was significantly lower than pressures of the control groups (P<0.01). In all groups, the mean blood pressure increased gradually from 10 to 20 weeks of age. The mean blood pressure of the experimental group was about 150 mmHg, and those of the control groups reached 175_??_180 mmHg. The mean blood pressure of the experimental animals was 14_??_17% lower than the pressures of the control animals at 20 weeks of age (P<0.01). The hypotensive effect on SHR fed the Gabaron tea infusion disappeared when the animals were returned to ordinary green tea intake at 20 weeks of age.

著者

大森 正司 矢野 とし子 岡本 順子 津志田 藤二郎 村井 敏信 樋口 満

出版者

Japan Society for Bioscience, Biotechnology, and Agrochemistry

雑誌

日本農芸化学会誌 (ISSN:00021407)

巻号頁・発行日

vol.61, no.11, pp.1449-1451, 1987

被引用文献数

41 87

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This study was conducted to investigate the effects of green tea made from leaves incubated in an anaerobic condition (Gabaron tea) on the blood pressure of spontaneously hypertensive rats (SHR). No difference was found in the mean body weight of the control groups (first group, fed on water; second group, fed on ordinary green tea) and the experimental group (third group, fed on Gabaron tea) throughout the test period. The mean blood pressure of the three groups was identical at 160 mmHg in the pre-test period. The mean blood pressure of the experimental group was 158 mmHg, whereas the control groups shared 163_??_167 mmHg one week after the experiment started. The blood pressure of the experimental group was significantly lower than pressures of the <br>control groups (<i>P</i><0.01).<br> In all groups, the mean blood pressure increased gradually from 10 to 20 weeks of age. The mean blood pressure of the experimental group was about 150 mmHg, and those of the control groups reached 175_??_180 mmHg. The mean blood pressure of the experimental animals was 14_??_17% lower than the pressures of the control animals at 20 weeks of age (<i>P</i><0.01). The hypotensive effect on SHR fed the Gabaron tea infusion disappeared when the animals were returned to ordinary green tea intake at 20 weeks of age.