60 營 養(yǎng) 學(xué) 報(bào) 26卷

切相關(guān)

茶多糖的資源及條件

可能會獲得高活性

[9] Bitter T, Muir HM. A modified uronic acid carbazole

reaction[J]. Anal Biochem

334

±±????òμ′ó?§3?

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[2] 汪東風(fēng),李俊,王常紅.茶葉多糖的組成及免疫活性的

研究[J].茶葉科學(xué), 2000, 20: 45287

[3] 李布青舒慶齡等.中低檔綠茶中茶多糖的提

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[4] 陳海霞

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[5] 倪德江謝筆鈞.不同茶類多糖降血糖效果的

[13] 倪德江

比較研究[J].茶葉科學(xué)２２：１６０［６］　施兆鵬.茶葉加工學(xué)[M].北京: 中國農(nóng)業(yè)出社.1998

2002

6

中國

[14] 倪德江

宋春和

中醫(yī)出版社

［８］　鐘蘿.茶葉品質(zhì)理化分析[M].上海

１１

1989.258

ＡＮＴＩＯＸＩＤＡＴＩＯＮ?。粒危摹。龋伲校希牵蹋伲茫牛停桑谩?/p>

ＥＦＦＥＣＴＳ?。希?/p>

ＰＯＬＹＳＡＣＣＨＡＲＩＤＥＳ

?。疲遥希汀。牵遥牛牛巍。裕牛粒。希希蹋希危恰。裕牛痢。粒危摹。拢蹋粒茫恕。裕牛?/p>

NI De-jiang

XIE Bi-jun

YUAN Fang-ting

Wuhan 430070

Objective: To compare tea polysaccharides(TPS) characteristics and their role in scavenging

free radicals and reducing blood glucose(BG) in diabetic mice(DM). Methods: TPS was extracted from greenFujian and Yunnan. Then the

recovery rate of TPS, contents of neutral sugar, uronic acid and protein were analysed, and scavenging rate ofO

2

and ·

OH in vitro and hypoglycemic effect were also determined. Results: 1. The yield and contents ofneutral sugar, uronic acid and protein of green tea TPS were the highest, and those of black tea TPS were the

lowest. Oolong tea TPS acted the best in scavengingO 2

and ·OH . 2. The hypoglycemic effect of TPS from Hubeitea was the best . The effect of TPS extracted from semi-fermented Oolong tea and fermented black tea was betterthan that of non-fermented green tea. 3. There were obvious differences in yield, free radical scavenging rate andeffect of reducing BG among TPS extracted from tea in different regions. TPS extracted from Fujian tea had thebest effect in reducing BG

effect of scavenging radical and reducing blood sugar TSP.

Key words: tea polysaccharides; physico-chemical characteristics; radical; diabetes; blood sugar

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