Effects of polysaccharides and polyphenolics fractions of Zijuan tea (Camellia sinensis var. kitamura) on α-glucosidase activity and blood glucose level and glucose tolerance of hyperglycaemic mice

Dejing Chen; Jingyuan Sun; Weixue Dong; Yixiao Shen; Zhimin Xu

首页> 外文期刊>International journal of food science & technology >Effects of polysaccharides and polyphenolics fractions of Zijuan tea (Camellia sinensis var. kitamura) on α-glucosidase activity and blood glucose level and glucose tolerance of hyperglycaemic mice

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Effects of polysaccharides and polyphenolics fractions of Zijuan tea (Camellia sinensis var. kitamura) on α-glucosidase activity and blood glucose level and glucose tolerance of hyperglycaemic mice

机译：紫娟茶（Camellia sinensis var。kitamura）多糖和多酚组分对高血糖小鼠α-葡萄糖苷酶活性，血糖水平和糖耐量的影响

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摘要

The effects of polysaccharides, theaflavins, thearubigins and theabrownin fractions of Zijuan tea on α-glucosidase and blood glucose level and intolerance of hyperglycaemic mice were evaluated. The polysaccharides or theaflavins fraction exhibited greater inhibition rate of α-glucosidase than acarbose positive control, thearubigins fraction or theabrownin fraction. The four fractions were delivered to the treatment mice through oval gavage each day for 15 days. The mice in polysaccharides and theaflavins high- and low-dose and theabrownin high-dose treatments significantly lowered their blood glucose levels while all the treatment mice gained body weight. The mice in polysaccharides, theaflavins and theabrownin high-and low-dose treatments had greater glucose tolerance as well. Thus, the theaflavins and polysaccharides fractions of Zijuan tea effectively moderated the complications of hyperglycaemic mice. The lower effectiveness of thearubigins and theabrownin fractions may be caused by the highly polymerised polyphenolics which decreased their accessibility to α-glucosidase and digestibility in mice.

机译：评估紫娟茶中的多糖，茶黄素，茶红素和茶黄素组分对α-葡萄糖苷酶和血糖水平以及高血糖小鼠的不耐受性的影响。多糖或茶黄素级分显示出比阿卡波糖阳性对照，茶红素级分或茶黄素级分更大的α-葡萄糖苷酶抑制率。每天通过椭圆管饲法将这四个级分递送至治疗小鼠，共15天。多糖和茶黄素高剂量，低剂量和茶黄素高剂量治疗的小鼠均降低了血糖水平，而所有治疗小鼠均体重增加。多糖，茶黄素和茶黄素高剂量和低剂量治疗的小鼠也具有更高的葡萄糖耐量。因此，紫娟茶中的茶黄素和多糖成分可有效缓解高血糖小鼠的并发症。茶红素和茶黄素部分的有效性较低可能是由于高度聚合的多酚类化合物引起的，这些多酚类化合物降低了它们对α-葡萄糖苷酶的可及性和小鼠的消化率。

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来源
《International journal of food science & technology》 |2018年第10期|2335-2341|共7页
作者
Dejing Chen; Jingyuan Sun; Weixue Dong; Yixiao Shen; Zhimin Xu;
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作者单位

Shaanxi Key Laboratory of Bio-Resources Shaanxi University of Technology Hanzhong Shaanxi China School of Biological Science and Engineering Shaanxi University of Technology Hanzhong Shaanxi China;

School of Biological Science and Engineering Shaanxi University of Technology Hanzhong Shaanxi China;

School of Nutrition and Food Sciences Louisiana State University Agricultural Center Baton Rouge LA USA;

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正文语种 eng
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关键词
Diabetes; hyperglycaemia; polyphenols; polysaccharides; tea; α-glucosidase;

机译：糖尿病;高血糖;多酚;多糖;茶;α-葡萄糖苷酶;

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1. Characterization and Activity of Anthocyanins in Zijuan Tea (Camellia sinensis var. kitamura) [J] . Lihua Jiang, Xiaojia Shen, Toshihiko Shoji Journal of Agricultural and Food Chemistry . 2013,第13期

机译：紫娟茶中的花色苷的特征和活性
2. EFFECTS OF GREEN TEA (CAMELLIA SINENSIS) ON BLOOD GLUCOSE OF MICE ON HIGH FAT DIET [J] . Farhana Sajjad, Liaqat Ali Minhas Annals of King Edward Medical University. . 2014,第2期

机译：绿茶（山茶）对高脂饮食小鼠血糖的影响
3. Identification of the anthocyanins from the purple leaf coloured tea cultivar Zijuan (Camellia sinensis var. assamica) and characterization of their antioxidant activities [J] . Lu Hai-Peng, Dai Wei-Dong, Tan Jun-Feng, Journal of Functional Foods . 2015,第Null期

机译：紫叶茶紫娟（Camellia sinensis var。assamica）花色苷的鉴定及其抗氧化活性
4. Enhancement of Phagocytic Activity by a Crude Polysaccharide from Tea (Camellia sinensis) Extract [C] . Manami Monobe, Kaori Ema, Keiko Azuma, Annual and International Meeting of the Japanese Association for Animal Cell Technology . 2010

机译：来自茶叶（Camellia Sinensis）提取物的粗多糖增强吞噬活性
5. Polyphenolic composition of tea (Camellia sinensis) and its relationship with antioxidant activity and processing. [D] . Chen, Hang. 2006

机译：茶树茶多酚组成及其与抗氧化活性和加工的关系。
6. Regulation of Anthocyanin Biosynthesis in Purple Leaves of Zijuan Tea (Camellia sinensis var. kitamura) [O] . Lingxia Wang, Dezhuo Pan, Meng Liang, 2017

机译：紫娟茶紫叶茶中花色苷生物合成的调控
7. Effects of flavonol-rich green tea (Camellia sinensis L. cv. Sofu) on blood glucose and insulin levels in diabetic mice [O] . Sachiko Nomura, Manami Monobe, Kaori Ema, 2015

机译：黄酮醇的绿茶（山茶花Sofum）对糖尿病小鼠血糖和胰岛素水平的影响

Effects of polysaccharides and polyphenolics fractions of Zijuan tea (Camellia sinensis var. kitamura) on α-glucosidase activity and blood glucose level and glucose tolerance of hyperglycaemic mice

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