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Microwave-assisted extraction of tea polyphenols and tea caffeine from green tea leaves
Alternative TitleChem. Eng. Process.
Pan, XJ; Niu, GG; Liu, HZ
2003-02-01
Source PublicationCHEMICAL ENGINEERING AND PROCESSING
ISSN0255-2701
Volume42Issue:2Pages:129-133
AbstractA 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.
KeywordPolyphenols Caffeine Green Tea Leaves Extraction Microwave-assisted
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
URL查看原文
Indexed BySCI
Language英语
WOS KeywordNATURAL ANTIOXIDANTS
WOS Research AreaEnergy & Fuels ; Engineering
WOS SubjectEnergy & Fuels ; Engineering, Chemical
WOS IDWOS:000179271400005
Citation statistics
Cited Times:285[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/5312
Collection研究所(批量导入)
AffiliationChinese 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.
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