食品科学 ›› 2012, Vol. 33 ›› Issue (4): 18-21.doi: 10.7506/spkx1002-6630-201204004

• 工艺技术 • 上一篇    下一篇

正交试验法优化超声提取枣核总黄酮

张吉祥,欧来良   

  1. 1.廊坊师范学院化学与材料科学学院 2.南开大学 生物活性材料教育部重点实验室,分子生物研究所
  • 出版日期:2012-02-25 发布日期:2012-02-14
  • 基金资助:
    河北省教育厅青年基金项目(2010156)

Optimization by Orthogonal Array Design of Ultrasonic Extraction of Total Flavonoids from Chinese Date Seeds

ZHANG Ji-xiang,OU Lai-liang   

  1. 1. Faculty of Chemistry and Material Science, Langfang Teachers, College, Langfang 065000, China; 2. Key Laboratory of Bioactive Materials, Ministry of Education, Institute of Molecular Biology, Nankai University, Tianjin 300071, China
  • Online:2012-02-25 Published:2012-02-14

摘要: 目的:采用正交试验法,优选枣核中总黄酮的最佳超声提取工艺。方法:以芦丁为对照品,采用分光光度法进行测定,以提取液中黄酮含量作为考查指标,对影响黄酮提取工艺的因素进行了研究。首先,通过单因素试验研究了超声波功率、超声提取时间、料液比和提取溶剂乙醇体积分数对提取效果的影响,然后,利用正交试验法优化最佳提取工艺条件。结果:影响枣核黄酮提取的主要因素是乙醇体积分数与超声波功率,正交试验结果表明最佳提取工艺参数为:超声波作用功率是450W、超声波作用时间为30min、料液比1:50、乙醇体积分数50%。在此实验条件下,枣核黄酮粗品的提取率为7.04%,粗品中黄酮含量为1.59%。结论:采用正交试验-超声提取工艺,能有效提高枣核黄酮的提取效率,具有良好的应用前景。

关键词: 正交试验法, 超声, 提取, 枣核, 总黄酮

Abstract: Objective: The optimal conditions for ultrasonic extraction of total flavonoids from Chinese date seeds were investigated by orthogonal array design. Methods: The content of total flavonoids was determined spectrometrically using rutin as reference substance. The effects of ultrasonic power, extraction time, material/liquid ratio, ethanol concentration on the content of total flavonoids in extracts were investigated by one-factor-at-a-time method, and the extraction conditions were optimized by orthogonal array design. Results: Ethanol concentration and ultrasonic power were the key factors that affect the extraction of total flavonoids. The optimal extraction conditions were obtained as follows: ultrasonic power 450 W, treatment time 30 min, material/liquid ratio 1:50 and ethanol concentration 50%. Under these conditions, the extraction yield of crude total flavonoids from Chinese date seeds was 7.04% and the content of total flavonoids in crude extracts 1.59%. Conclusion: The optimized process remarkably increases the extraction yield of total flavonoids from Chinese date seeds and has a promising prospect for practical applications.

Key words: orthogonal array design, ultrasonic, extraction, Chinese date seeds, total flavonoids

中图分类号: