浙江农业学报

• 食品科学 • 上一篇    下一篇

野葛块根异黄酮的提取及抗氧化研究

  

  1. (1. 湖南科技学院 化学与生物工程学院,湘南优势植物资源综合利用湖南省重点实验室,湖南 永州 425199;2. 浙江大学 农业与生物技术学院,浙江 杭州 310058;3. 中国农业科学院 农产品加工研究所,农业部农产品加工质量安全风险评估实验室,北京 100193)
  • 出版日期:2016-03-25 发布日期:2016-04-07

Extraction and antioxidant effects of isoflavone in Pueraria lobata (Willd.) Ohwi root tuber

  1. (1. Department of Chemistry and Biological Engineering, Hunan University of Science and Engineering, Key Laboratory of Comprehensive Utilization of Advantage Plants Resources in Hunan South, Yongzhou 425199, China; 2. College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China; 3. Institute of Agroproducts Processing Science and Technology, Chinese Academy of Agricultural Sciences, Laboratory of Agroproducts Quality Safety Risk Assessment, Ministry of Agriculture, Beijing 100193, China)
  • Online:2016-03-25 Published:2016-04-07

摘要: 以土家山区野葛块根为试验材料,采用超声波辅助乙醇提取野葛块根异黄酮。在单因素试验的基础上,以提取率为响应值,运用4因素4水平响应面分析法研究提取过程中工艺参数对提取率的影响,并对异黄酮提取物的抗氧化性能进行了研究。结果表明:最适提取工艺条件为乙醇浓度81.0%,超声时间41.2 min,提取温度61.2 ℃,料液比(m/V)1∶9.5,原料粒径40目。在此工艺条件下,野葛块根异黄酮的平均提取率为3.43%。所提取的野葛块根异黄酮的抗氧化效果低于Vc,但能与其产生一定的协同作用。

关键词: 野葛, 异黄酮, 抗氧化

Abstract: In the present study, isoflavone was extracted from Pueraria lobata(Willd.) Ohwi root tuber collected in Tujia Mountain by ultrasoundassisted ethanol extraction. Based on single factor test analysis, main technology parameters of the extraction process were optimized by response surface design of 4 factors and 4 levels, and antioxidant effects of the extracted isoflavone were also studied. The results showed that the optimum extraction technology was as follows: the ethanol concentration was 810%,ultrasoundassisted extraction time was 41.2 min, extraction temperature was 61.2 ℃, solid to liquid ratio (m/V) was 1∶9.5, and particle size of raw material was 40 mesh. Under this condition, the extraction rate of isoflavone reached 3.43%. The antioxidant effects of the extracted isoflavone were weaker than that of vitamin C, but it could yield synergetic effect with vitamin C.

Key words: Pueraria lobata(Willd.) Ohwi, isoflavone, antioxidants