食品科学 ›› 2012, Vol. 33 ›› Issue (20): 109-112.
• 工艺技术 • 上一篇 下一篇
史高峰,祝娟娟,张兴潜,陈学福,李沙金
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摘要: 以黄芩茎叶为原料,采用醇提法提取黄芩茎叶总黄酮。在单因素试验的基础上,以提取温度、提取时间、乙醇体积分数和料液比为考察因素,采用L9(34)正交试验探讨醇提法提取黄芩茎叶总黄酮工艺。最佳工艺条件:以70%乙醇为溶剂、提取温度70℃、料液比1:18(g/mL)、提取3次、每次2.0h,此时黄芩茎叶提取物中总黄酮含量为21.02%,总黄酮得率1.39%。
关键词: 黄芩茎叶, 总黄酮, 提取工艺
Abstract: The extraction of total flavonoids from stems and leaves of Scutellaria baicalensis Georgi by ethanol extraction was optimized using an L9(34) orthogonal array design. One-factor-at-a-time method was used to investigate the effects of temperature, extraction time, ethanol concentration and solid/solvent ratio on extraction efficiency. The optimum conditions for the extraction of total flavonoids were determined as three extraction cycles with 70% ethanol at a solid/solvent ratio of 1:18 (g/mL), 70 ℃ for 2.0 h each. Under these conditions, the yield and purity of crude total flavonoid extract were 21.02% and 1.39%, respectively.
Key words: Scutellaria baicalensis Georgi, total flavonoids, extraction process
史高峰,祝娟娟,张兴潜,陈学福,李沙金 . 黄芩茎叶中总黄酮提取工艺优化[J]. 食品科学, 2012, 33(20): 109-112.
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