化工技术与开发
化工技術與開髮
화공기술여개발
TECHNOLOGY & DVELOPMENT OF CHEMICAL INDUSTRY
2013年
3期
18-20
,共3页
离子沉淀法%茶多酚%提取率
離子沉澱法%茶多酚%提取率
리자침정법%다다분%제취솔
ion precipitation%tea polyphenols%extraction ratio
以绿茶为原料,水为浸提溶剂,采用离子沉淀法对茶叶中茶多酚的提取进行了研究.探讨了沉淀剂种类、沉淀剂用量、溶剂用量、浸提温度、浸提时间5个因素对茶叶中茶多酚提取的影响,优化了茶多酚提取的最佳工艺条件.结果表明,当以AlCl3为沉淀剂且m沉淀剂∶m茶叶=1∶5、溶剂用量m茶叶∶m水=1∶20、浸提温度为水浴75℃、浸提时间45 min 时,茶多酚的提取率最高,为14.12%.
以綠茶為原料,水為浸提溶劑,採用離子沉澱法對茶葉中茶多酚的提取進行瞭研究.探討瞭沉澱劑種類、沉澱劑用量、溶劑用量、浸提溫度、浸提時間5箇因素對茶葉中茶多酚提取的影響,優化瞭茶多酚提取的最佳工藝條件.結果錶明,噹以AlCl3為沉澱劑且m沉澱劑∶m茶葉=1∶5、溶劑用量m茶葉∶m水=1∶20、浸提溫度為水浴75℃、浸提時間45 min 時,茶多酚的提取率最高,為14.12%.
이록다위원료,수위침제용제,채용리자침정법대다협중다다분적제취진행료연구.탐토료침정제충류、침정제용량、용제용량、침제온도、침제시간5개인소대다협중다다분제취적영향,우화료다다분제취적최가공예조건.결과표명,당이AlCl3위침정제차m침정제∶m다협=1∶5、용제용량m다협∶m수=1∶20、침제온도위수욕75℃、침제시간45 min 시,다다분적제취솔최고,위14.12%.
@@@@The extraction of polyphenols in green tea by ion precipitation was studied applied green tea as the raw material and the water as the leaching solvent. The influences of the precipitator type, the precipitator dosage, the solvent dosage, the leaching temperature and the leaching time on the extraction of polyphenols in green tea were discussed. The best process extraction conditions of polyphenols were optimized. The results showed that the maximum leaching rate of tea polyphenols was 14.12% while the AlCl3 was used as the precipitator, the mass ratio of the precipitator to tea was 1∶5, the mass ratio of the tea to water was 1∶20, the water bath temperature was 75℃ ,the leaching time was 45 min.
