巴戟天醇提物的提取优化及其抗氧化活性研究

2020-08-06 14:23:41林立王建荣郑燕梅
中国民族民间医药·下半月 2020年6期

林立 王建荣 郑燕梅

【摘 要】 目的:优化巴戟天醇提物的提取工艺,并评价其体外抗氧化活性。方法:对巴戟天醇提物的提取进行单因素实验分析,然后通过清除ABTS、清除DPPH、清除超氧阴离子、还原力和总抗氧化五种方法评价巴戟天体外抗氧化活性。结果:最佳提取条件为乙醇提取浓度75 %,提取温度100 ℃,提取时间2 h;巴戟天75 %醇提物对ABTS自由基、DPPH自由基、超氧阴离子自由基均有一定的清除能力,对DPPH自由基和超氧阴离子自由基的最大清除率分别为48.016 %和28.782 %,还原力测试与总抗氧化能力实验数值均与浓度呈现量效关系。结论:巴戟天具有一定的体外抗氧化活性。

【关键词】 巴戟天;抗氧化;自由基

【中图分类号】R285.5   【文献标志码】 A    【文章编号】1007-8517(2020)12-0042-05

Abstract:Objective Optimize the extraction process of alcohol extraction from Morinda officinalis and evaluate its antioxidant activity in vitro.Methods The alcohol extraction of Morinda officinalis was analyzed by single factor experiment,and then the antioxidant activity of Morinda officinalis was evaluated by five methods which were scavenging ABTS,removing DPPH,removing superoxide anion,reducing force and total antioxidant capacity. Results The optimum extraction conditions were ethanol extraction concentration 75 %,extraction temperature 100 ℃,extraction time 2 h,The part of 75 % alcohol extraction had some scavenging ability for ABTS radical,DPPH radical and superoxide anion radical,and the maximum scavenging rate for DPPH radical and superoxide anion radical was 48.016 % and 28.782 %,respectively. The experimental values of reducing force test and total antioxidant capacity showed a quantitative effect relationship with the concentration.Conclusior Morinda officinalis has antioxidant activity in vitro.

Keywords:Morinda officinalis How; Antioxidant Activity; Free Radical

巴戟天(Morinda officinalis How)是茜草科巴戟天属多年生攀援性木质藤本植物,别名巴戟、巴吉、鸡肠风,产福建、广东、海南、广西等省区的热带和亚热带地区,中南半岛也有分布[1]。全年均可采挖,洗净,除去须根,其肉质根的根肉晒干即成药材“巴戟天”,和槟榔、益智、砂仁并称为我国四大南药,为福建省大宗道地药材。中医认为其性甘、辛、微温,归肾、肝经,具有补肾阳、强筋骨、祛风湿的功能,可用于阳痿遗精、宫冷不孕、月经不调、少腹冷痛、风湿痹痛,筋骨痿软等病症[2]。近年来,国内外对巴戟天属植物的化学成分及药理活性研究较多,其化学成分主要有蒽醌类、萘醌和萘氢醌类、环烯醚萜类、糖类、木脂素类、脂肪苷类、香豆素类、黄酮类、挥发油类等,并不断有新的化学成分被发现;现代药理学研究表明巴戟天能够抗抑郁、抗炎镇痛、抗菌、抗丙型肝炎病毒作用、抗疲劳、保肝、调节免疫、调控生精功能、抗肿瘤及细胞毒作用、抗骨质疏松、抗氧化等生物活性[3-9]。……

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