頁籤選單縮合
題 名 | 茶葉中兒茶素類萃取及純化之研究=Studies on the Extraction and Purification of Catechins in Tea |
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作 者 | 阮逸明; 陳英玲; | 書刊名 | 臺灣茶業研究彙報 |
卷 期 | 17 1998.06[民87.06] |
頁 次 | 頁1-8 |
分類號 | 434.81 |
關鍵詞 | 茶; 兒茶素類; 萃取; 純化; Tea; Catechins; Extraction; Purification; |
語 文 | 中文(Chinese) |
中文摘要 | 兒茶素類是茶葉中對人體具有生理活性的物質之一。本試驗利用 PVPP (polyvinylpolypyrrolidone) 吸附法、極性吸附法及親和性吸著法等三種方法, 分別嘗試 分離茶葉中的粗兒茶素類。結果顯示親和性吸著法能成功地分離出粗兒茶素類,尤其對酯型 兒茶素類具有較高之專一性。萃取出之兒茶素類經脫鹽及冷凍乾燥後,可得粗兒茶素粉末。 由於酯型兒茶素類具較高之抗氧化活性,故在抽取時宜選擇酯型兒茶素含量多之茶葉原料以 得到較多之產物。 |
英文摘要 | Catechins are the important compounds of tea that have effective physiological activities on human bodies. Three methods were used to extract and purify catechins from tea liquor. There are the adsorption of polyvinylpolypyrrolidone (PVPP), the polar interactions of aminopropyl group, and the covalent retention of phenyl-boronic acid group (PBA). It was shown that the PBA method was the best method. It could successfully separated the caffeine and catechins exclusively with the other polar compounds. The powder of crude catechins were obtained by freezedrying the desalt extracts which were passed through the PVPP or PBA adsorption. |
本系統中英文摘要資訊取自各篇刊載內容。