Document Detail


Factors affecting transfer of polycyclic aromatic hydrocarbons from made tea to tea infusion.
MedLine Citation:
PMID:  16756366     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Factors affecting transfer percentages of 12 polycyclic aromatic hydrocarbons (PAHs) were investigated, including tea variety, tea/water ratio (TWR, g/mL), brewing times, washed tea or unwashed tea, and covered cup or uncovered cup. It was observed that %PAH transfer varied with tea variety and increased with the decrease of TWR. The mean %PAH transfer with TWR = 1/150 was 1.12 and 1.65 times higher than that with TWR = 1/100 and 1/50, respectively. %PAH transfer reduced greatly as the brewing times increased. The mean %PAH transfer in the first brewing time occupied 51.6% of the total three mean %PAH transfers in the three brewing times. The mean %PAH transfer decreased by 30.4% after the tea had been washed immediately before brewing. Brewing the tea within uncovered cup diminished %PAH transfer by a degree of 4.31-31.7% compared to brewing the tea within a covered cup.
Authors:
Daohui Lin; Lizhong Zhu; Lan Luo
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of agricultural and food chemistry     Volume:  54     ISSN:  0021-8561     ISO Abbreviation:  J. Agric. Food Chem.     Publication Date:  2006 Jun 
Date Detail:
Created Date:  2006-06-07     Completed Date:  2006-08-08     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  0374755     Medline TA:  J Agric Food Chem     Country:  United States    
Other Details:
Languages:  eng     Pagination:  4350-4     Citation Subset:  IM    
Affiliation:
Department of Environmental Science, Zhejiang University, Hangzhou, Zhejiang, China 310028.
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MeSH Terms
Descriptor/Qualifier:
Food Handling / methods
Hot Temperature
Polycyclic Hydrocarbons, Aromatic / analysis*,  chemistry*
Tea / chemistry*,  classification
Time Factors
Water / analysis
Chemical
Reg. No./Substance:
0/Polycyclic Hydrocarbons, Aromatic; 0/Tea; 7732-18-5/Water

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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