Knowledge Management System Of Institute of process engineering,CAS
| Microwave-assisted extraction of tea polyphenols and tea caffeine from green tea leaves | |
| Alternative Title | Chem. Eng. Process. |
| Pan, XJ; Niu, GG; Liu, HZ | |
| 2003-02-01 | |
| Source Publication | CHEMICAL ENGINEERING AND PROCESSING
 |
| ISSN | 0255-2701 |
| Volume | 42Issue:2Pages:129-133 |
| Abstract | A microwave-assisted extraction (MAE) method is presented for the extraction of tea polyphenols (TP) and tea caffeine from green tea leaves. Various experimental conditions. such as ethanol concentration (0 - 100%, v/v), MAE time (0.5 - 8 min), liquid/solid ratio (10:1 - 25:1 ml g(-1)), pre-leaching time (0-90 min) before MAE and different solvents for the MAE procedure were investigated to optimize the extraction, The extraction of tea polyphenols and tea caffeine with MAE for 4 min (30 and 4%) were higher than those of extraction at room temperature for 20 h. ultrasonic extraction for 90 min and heat reflux extraction for 45 min (28 and 3.6%), respectively. From the points of extraction time, the extraction efficiency and the percentages of tea polyphenols or tea caffeine in extracts, MAE was more effective than the conventional extraction methods studied. (C) 2002 Elsevier Science B.V. All rights reserved.; A microwave-assisted extraction (MAE) method is presented for the extraction of tea polyphenols (TP) and tea caffeine from green tea leaves. Various experimental conditions. such as ethanol concentration (0 - 100%, v/v), MAE time (0.5 - 8 min), liquid/solid ratio (10:1 - 25:1 ml g(-1)), pre-leaching time (0-90 min) before MAE and different solvents for the MAE procedure were investigated to optimize the extraction, The extraction of tea polyphenols and tea caffeine with MAE for 4 min (30 and 4%) were higher than those of extraction at room temperature for 20 h. ultrasonic extraction for 90 min and heat reflux extraction for 45 min (28 and 3.6%), respectively. From the points of extraction time, the extraction efficiency and the percentages of tea polyphenols or tea caffeine in extracts, MAE was more effective than the conventional extraction methods studied. (C) 2002 Elsevier Science B.V. All rights reserved. |
| Keyword | Polyphenols Caffeine Green Tea Leaves Extraction Microwave-assisted |
| Subtype | Article |
| WOS Headings | Science & Technology ; Technology |
| URL | 查看原文 |
| Indexed By | SCI |
| Language | 英语 |
| WOS Keyword | NATURAL ANTIOXIDANTS |
| WOS Research Area | Energy & Fuels ; Engineering |
| WOS Subject | Energy & Fuels ; Engineering, Chemical |
| WOS ID | WOS:000179271400005 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Version | 出版稿 |
| Identifier | http://ir.ipe.ac.cn/handle/122111/5312 |
| Collection | 研究所（批量导入） |
| Affiliation | Chinese Acad Sci, Inst Proc Engn, State Key Lab Biochem Engn, Young Sci Lab Separat Sci & Engn, Beijing 100080, Peoples R China |
| Recommended Citation GB/T 7714 | Pan, XJ,Niu, GG,Liu, HZ. Microwave-assisted extraction of tea polyphenols and tea caffeine from green tea leaves[J]. CHEMICAL ENGINEERING AND PROCESSING,2003,42(2):129-133. |
| APA | Pan, XJ,Niu, GG,&Liu, HZ.(2003).Microwave-assisted extraction of tea polyphenols and tea caffeine from green tea leaves.CHEMICAL ENGINEERING AND PROCESSING,42(2),129-133. |
| MLA | Pan, XJ,et al."Microwave-assisted extraction of tea polyphenols and tea caffeine from green tea leaves".CHEMICAL ENGINEERING AND PROCESSING 42.2(2003):129-133. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| Microwave-assisted e（235KB） | 限制开放 | CC BY-NC-SA | Application Full Text | |||
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