摘要
本文以乙醇/水溶液作为提取剂对沙棘叶中的黄酮类化合物进行提取,考察了乙醇浓度、提取温度、提取时间对提取效率的影响,并对实验数据进行了化学动力学模型拟合。实验结果表明,脱脂沙棘叶粉末中黄酮类化合物提取的最佳条件为乙醇质量分数60%,提取温度65℃,提取时间60 min,此条件下黄酮类化合物的提取效率最高为4.12%(质量分数)。化学动力学拟合结果表明,二级动力学模型与黄酮类化合物提取工艺数据的拟合度较高,平均相对偏差为±3%。本研究能为推动沙棘提取黄酮类化合物的产业化提供基础的数据支持。
In this article,ethanol/water solution was used as the extraction agent to extract flavonoids from sea buckthorn leaves.The effects of ethanol concentration,extraction temperature and extraction time on the extraction efficiency were investigated,and a chemical kinetic model was fitted to the experimental data.The experimental results showed that the optimum conditions for the extraction of flavonoids from defatted seabuckthorn leaf powder were ethanol mass fraction of 60%,extraction temperature 65℃and extraction time 60 min.Under this condition,the extraction efficiency of flavonoids was 4.12%(mass fraction).The results of chemical kinetics fitting showed that the second-level kinetic model had a high degree of fitting with the extraction process data of flavonoids,and the mean relative deviation is±3%.This study can provide basic data support for promoting the industrialization of extracting flavonoids from sea buckthorn.
作者
何静
杨英
罗玲
郭佳
HE Jing;YANG Ying;LUO Ling;GUO Jia(Sichuan Vocational College of Chemical Technology,Luzhou 646000,China;Luzhou Laojiao Co.,Ltd.,Luzhou 646000,China)
出处
《现代食品》
2024年第9期64-67,共4页
Modern Food
基金
天然产物与功能性食品开发研究泸州市重点实验室项目“不同脱臭方法制备大蒜沙棘保健饮料的工艺及配方研究”(HYGNSP-2207-B)。
关键词
沙棘叶
黄酮类化合物
提取
工艺条件
sea buckthorn leaves
flavonoids
extract
process conditions
