湖北农业科学 ›› 2024, Vol. 63 ›› Issue (7): 141-146.doi: 10.14088/j.cnki.issn0439-8114.2024.07.023

• 贮藏·加工 • 上一篇    下一篇

响应面法优化提取小米椒木犀草素的工艺

谢君铨, 冯庆玲, 谢勇武   

  1. 闽南科技学院生命科学与化学学院,福建 泉州 362332
  • 收稿日期:2023-07-18 出版日期:2024-07-25 发布日期:2024-07-24
  • 作者简介:谢君铨(1988-),男,福建三明人,讲师,硕士,主要从事天然产物开发与研究工作,(电话)13506961820(电子信箱)xiejunquan@mku.edu.cn。
  • 基金资助:
    福建省中青年教师教育科研项目(科技类)(JT180827); 福建省级一流本科专业建设项目(SJZY -2020-02)

Optimization of extraction of luteolin from millet pepper by response surface methodology

XIE Jun-quan, FENG Qing-ling, XIE Yong-wu   

  1. School of Life Science and Chemistry, Minnan Science and Technology College, Quanzhou 362332,Fujian,China
  • Received:2023-07-18 Published:2024-07-25 Online:2024-07-24

摘要: 以小米椒为原材料,采用超声辅助提取法,以木犀草素提取率为考察指标,通过单因素试验探究料液比、乙醇浓度、浸提时间和浸提温度对木犀草素提取率的影响,并以响应面分析方法进行工艺优化。结果表明,小米椒中木犀草素的最佳提取工艺条件为浸提温度52.3 ℃、料液比1∶50、乙醇浓度97%、浸提时间20 min。在此提取条件下提取率为1.641%,与理论值对比,偏差-0.061%。利用牛津杯法测试木犀草素的抑菌活性,结果表明木犀草素提取物对金黄色葡萄球菌、枯草芽孢杆菌均有抑菌效果,对大肠杆菌无抑菌效果。

关键词: 小米椒, 木犀草素, 超声提取法, 响应面法, 抑菌

Abstract: With millet pepper as raw material, ultrasonic-assisted extraction was used to extract luteolin, and the extraction rate of luteolin was used as the index. The effects of material to liquid ratio, ethanol concentration, extraction time and extraction temperature on the extraction rate of luteolin were investigated through single factor experiment, and the process was optimized by the response surface analysis method. The results showed that the optimum extraction condition of luteolin from millet pepper was extraction temperature of 52.3 ℃, material to liquid ratio of 1∶50, ethanol concentration of 97%, and extraction time of 20 min. Under this extraction condition, the extraction rate was 1.641%, with a deviation of -0.061% compared with the theoretical value. The antibacterial activity of luteolin was tested by the Oxford cup method. The results showed that luteolin extract had a bacteriostatic effect on Staphylococcus aureus and Bacillus subtilis, but had no bacteriostatic effect on Escherichia coli.

Key words: millet pepper, luteolin, ultrasonic extraction method, response surface methodology, antibacterial

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