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桂西重楼总黄酮体外抗氧化活性研究

2017-03-21莫璐黄雅珍张惠马小庭黄晶

湖北农业科学 2017年3期

莫璐++黄雅珍++张惠++马小庭++黄晶莹++黄锁义++谭冰

摘要:研究了桂西重楼总黄酮的体外抗氧化活性,旨在为抗氧化新药的开发提供理论依据。采用70%乙醇为提取溶剂,1∶40(g∶mL)的料液比,通过回流提取法对广西重楼总黄酮进行提取,经减压浓缩得总黄酮。结果表明,重楼对ABTS+·、DPPH·、·OH的清除能力以及对Fe3+的还原能力均较强,说明桂西重楼总黄酮的体外抗氧化活性较强。

关键词:桂西重楼;总黄酮;体外;抗氧化

中图分类号:R284.2 文献标识码:A 文章编号:0439-8114(2017)03-0538-04

DOI:10.14088/j.cnki.issn0439-8114.2017.03.037

Study on Antioxidant Activity in Vitro of Total Flavanone

from Polyphylla in Western Guangxi

MO Lu1a,HUANG Ya-zhen1a,ZHANG Hui1a,MA Xiao-ting1b,HUANG Jing-ying1c,HUANG Suo-yi1b,2,TAN Bing1b

(1.Youjiang Medical University for Nationalities,a. College of Clinical Medicine;b.College of Pharmacy;c. College of Basic Medicine,Baise 533000,Guangxi, China;2.Guangxi Colleges and Universities Key Laboratory of the Characteristics of Ethnic Medicine of the Youjiang Valley, Baise 533000, Guangxi,China)

Abstract: The antioxidant activity in vitro of total flavanone from Polyphylla in western Guangxi was studied to provide theoretical basis for the development of new antioxidant drug. Using 70% ethanol as extraction solvent,with material-liquid ratio of 1∶40(g∶mL), the total flavonoid of Polyphylla in western Guangxi was extracted by reflux extraction method,and then was obtained by decompression concentrator. The results showed that,polyphylla had strong scavenging capacity on ABTS+·,DPPH·, ·OH and strong reducing power on Fe3+. The total flavanone of Polyphylla in western Guangxi had a strong antioxidant activity in vitro.

Key words: polyphylla in western Guangxi; total flavanone; in vitro; antioxidant activity

重楼为百合科植物云南重楼(Paris polyphylla Smith var. yunnanensisiFranch)或七叶一枝花[Paris polyphylla Smith var. chinensis(Franch.) Hara]的干燥根茎。重楼味苦,微寒,有小毒。归肝经。清热解毒,消肿止痛,凉肝定惊。用于疔疮痈肿,咽喉肿痛,蛇虫咬伤,跌扑伤痛,惊风抽搐[1]。近现代试验表明,重楼具有较强的抗肿瘤活性,其对恶性淋巴癌、肺癌、鼻咽癌、脑肿瘤及消化系统肿瘤等有较好的治疗作用。抗肿瘤机制主要是阻滞肿瘤细胞增殖周期、影响癌基因和抑制癌基因的表达、影响细胞信号的传导等[2],重楼主要含甾体皂苷、黄酮、多糖等活性成分[2,3],其中,黄酮类化合物具有镇痛、抗肿瘤、抗炎、抗氧化,抗抑郁、抗衰老、调节免疫、抗心律失常及降血脂等作用[2-5]。可见,重楼的黄酮类药物成分在治疗肿瘤疾病方面发挥了值得肯定的作用。此外黄酮类化合物还对免疫低下、高血脂、抑郁症等疾病的治疗及防衰老、抗氧化方面挥发重要作用。然而目前对重楼的化学成分研究仍比较少,其药理活性研究方面的文献报道也不多,生物活性作用物质基础不够明确,导致其在功能食品和临床上的应用受到局限。……

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