| 引用本文: | 郑晓玲,郑彩虹.超声波法提取儿茶中总儿茶素工艺研究[J].中国现代应用药学,2011,28(13):1321-1323. |
| ZHENG Xiaoling,ZHENG Caihong.Study on Extraction of Catechin from Catechu by Ultrasonic Technology[J].Chin J Mod Appl Pharm(中国现代应用药学),2011,28(13):1321-1323. |
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| 摘要: |
| 目的 研究超声波法提取儿茶中儿茶素和表儿茶素的最佳工艺。方法 以儿茶素和表儿茶素的含量总和占儿茶重量的百分比为提取率作为考察指标，采用正交试验，考察乙醇浓度、料液比、提取温度和超声时间4个因素的影响。结果 超声波提取优化工艺条件为：乙醇浓度为50%，料液比为1∶12，超声时间为35 min，提取温度为60 ℃。结论 超声波提取儿茶中儿茶素和表儿茶素的工艺具有提取率高、时间短、溶剂用量少、能量消耗小等优点，适用于儿茶素和表儿茶素的提取。 |
| 关键词: 儿茶 儿茶素 表儿茶素 超声提取 正交试验 |
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| 基金项目:浙江省中医药科技计划重点项目(2008ZA010) |
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| Study on Extraction of Catechin from Catechu by Ultrasonic Technology |
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ZHENG Xiaoling, ZHENG Caihong
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Women’s Hospital, School of Medicine, Zhejiang University, Hangzhou 310006, China
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| Abstract: |
| OBJECTIVE To study the extraction technology of catechin from Catechu with ultrasonic process. METHODS Using the amount of catechin and epicatechin in dry extract as a major evaluation factor, orthogonal experiment was carried out to investigate four influential factors of the ethanol concentration, the ratio of raw material to solvent, the ultrasonic time and the extraction temperature. RESULTS The optimum condition of extraction from Catechu with ultrasonic technology was as follows, the concentration of ethanol, the ratio of raw material to solvent, the ultrasonic time, the extraction temperature were 50%, 1∶12, 35 min and 60 ℃, respectively. CONCLUSION The extraction process with ultrasonic method is fit for the extraction from Catechu with advantage of higher extraction rate and shorter time with less solvent and energy. |
| Key words: Catechu catechin epicatechin ultrasonic extraction orthogonal experimental method |
