当归根、茎中总黄酮的提取工艺优化
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篇名: 当归根、茎中总黄酮的提取工艺优化
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摘要: 目的:优化当归根、茎中总黄酮的提取工艺。方法:以提取溶剂乙醇的体积分数、料液比、提取时间、提取次数等为考察因素,以提取液中总黄酮含量为评价指标,在单因素试验基础上采用Box-Behnken设计-响应面法优化当归根、茎中总黄酮的回流提取工艺。结果:当归根、茎中总黄酮最优提取工艺分别为乙醇体积分数70%、50%,料液比1 ∶ 40、1 ∶ 30,提取时间1.3、1.7 h,均提取2次;验证试验中总黄酮含量分别为7.253 6、25.144 1 mg/g(RSD=1.57%、1.49%,n=3),与模型预测值(6.942 8、25.703 5 mg/g)的相对误差分别为4.28%、2.24%。结论:优化后的当归根、茎中总黄酮的提取工艺方法简单,重现性和可预测性较好。
ABSTRACT: OBJECTIVE: To optimize reflux extraction technology of total flavonoids from the roots and stems of Angelica sinensis. METHODS: The reflux extraction technology of total flavonoids from the roots and stems of A. sinensis was optimized by Box-Behnken design-response methodology based on single factor test using volume fraction of extraction solvent ethanol, solide-liquid ration, extraction time, extraction times as investigation factors, the content of total flavonoids in extract as evaluation index. RESULTS: The optimal extraction technology of total flavonoids from the roots and stems of A. sinensis was that volume fractions of ethanol were 70% and 50%; solid-liquid ratios were 1 ∶ 40 and 1 ∶ 30; extraction time were 1.3 h and 1.7 h; The number of extraction times is two times. In verification test, the contents of total flavonoids were 7.253 6, 25.144 1 mg/g (RSD=1.57%, 1.49%, n=3); relative errors of those to predicted value (6.942 8, 25.703 5 mg/g) were 4.28%, 2.24%. CONCLUSIONS: Optimized extraction technology for total flavonoids from the roots and stems of A. sinensis is simple, reproducible and predictable.
期刊: 2018年第29卷第3期
作者: 罗旭东,李成义,李旭,强正泽,冯晓莉,王明伟,李硕,王燕
AUTHORS: LUO Xudong,LI Chengyi,LI Xu,QIANG Zhengze,FENG Xiaoli,WANG Mingwei,LI Shuo,WANG Yan
关键字: 当归;根;茎;总黄酮;单因素试验;Box-Behnken设计;响应面法;回流提取;工艺优化
KEYWORDS: Angelica sinensis; Roots; Stems; Total flavonoids; Single factor test; Box-Behnken design; Response methodology; Reflux extraction; Technology optimization
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