多指标-正交试验优化沙棘叶和沙棘籽中黄酮的提取工艺
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篇名: 多指标-正交试验优化沙棘叶和沙棘籽中黄酮的提取工艺
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摘要: 目的:优化沙棘叶和沙棘籽中黄酮的提取工艺。方法:以 6种黄酮苷元即儿茶素、芦丁、杨梅素、槲皮素、山柰酚、异鼠李素的提取率总和为指标,以乙醇体积分数、提取时间、提取次数、料液比为考察因素,采用L9(34)表设计正交试验,分别优化沙棘叶和沙棘籽中黄酮的提取工艺,并进行验证试验。结果:沙棘叶中黄酮的最优提取工艺为乙醇体积分数70%、提取3次、每次提取2.0 h、料液比1 ∶ 16;沙棘籽中黄酮的最优提取工艺为乙醇体积分数50%、提取3次、每次提取1.5 h、料液比1 ∶ 24;验证试验中,沙棘叶和沙棘籽中6种黄酮苷元的提取率总和分别为56.4、15.4 mg/g(RSD分别为1.4%、3.4%,n=3)。结论:优化后的提取工艺方法简便、稳定、可行,可用于沙棘叶和沙棘籽中黄酮成分的提取。
ABSTRACT: OBJECTIVE: To optimize the extraction technology for flavonoids in leaves and seeds of Hippophae rhamnoides. METHODS: Using the total extraction rate of 6 flavonoid aglycones (catechins, rutin, myricetin, quercetin, kaempferol, isorhamnetin) as index, ethanol volume fraction, extraction time, extraction times, material-lipid ratio as investigation indexes, L9(34) orthogonal test was designed to optimize the extraction technology of flavonoids in leaves and seeds of H. rhamnoides, and verification test was carried out. RESULTS: The optimum extraction technology for flavonoids in leaves of H. rhamnoides was ethanol volume fraction of 70%, extracting for 3 times with material-lipid ratio of 1 ∶ 16, and 2.0 h each time; and that of seeds was ethanol volume fraction of 50%, extracting for 3 times with material-lipid ratio of 1 ∶ 24, and 1.5 h each time. In verification test, the total extraction rate of 6 flavonoid aglycones was 56.4 mg/g in the leaves (RSD=1.4%, n=3) and 15.4 mg/g in the seeds (RSD=3.4%, n=3). CONCLUSIONS: Optimized extraction technology is simple, stable, feasible, and can be used for extracting the flavonoids in leaves and seeds of H. rhamnoides.
期刊: 2017年第28卷第34期
作者: 惠人杰,冯静,蔺默含,冯柏年
AUTHORS: HUI Renjie,FENG Jing,LIN Mohan,FENG Bainian
关键字: 沙棘叶;沙棘籽;正交试验;提取工艺;黄酮苷元
KEYWORDS: Leaves of Hippophae rhamnoides; Seeds of Hippophae rhamnoides; Orthogonal test; Extraction technology; Flavonoid aglycone
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