Occurrence and Residue Pattern of Phthalate Esters in Fresh Tea Leaves and during Tea Manufacturing and Brewing
文献类型: 外文期刊
第一作者: Liu, Pingxiang
作者: Liu, Pingxiang;Chen, Hongping;Gao, Guanwei;Hao, Zhenxia;Wang, Chen;Ma, Guicen;Chai, Yunfeng;Zhang, Lin;Liu, Xin;Liu, Pingxiang;Gao, Guanwei;Zhang, Lin;Chen, Hongping;Hao, Zhenxia;Wang, Chen;Ma, Guicen;Chai, Yunfeng;Liu, Xin
作者机构:
关键词: tea;phthalate ester;gas chromatography-tandem mass spectrometry;residue pattern;transfer rate
期刊名称:JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY ( 影响因子:5.279; 五年影响因子:5.269 )
ISSN:
年卷期:
页码:
收录情况: SCI
摘要: The residues of 16 phthalate esters (PAEs) in fresh tea leaves and made tea were determined via gas chromatography tandem mass spectrometry to study their distribution and degradation characteristics during tea planting and processing. Five PAEs were detected in all fresh tea leaves, and higher concentrations were-detected in mature leaves. The distribution of PAEs in fresh tea leaves ranged from 69.7 to 2244.0 mu g/kg. The degradative percentages of Sigma(5)PAEs during.green tea manufacturing ranged from 61 to 63% and were significantly influenced by the drying process. The transfer rates of PAEs-D-4 ranged from 5.2 to 100.6%. PAEs with a high water solubility showed the highest transfer coefficient in the range of 91.8-100.6%, whereas PAEs with a high log Kow showed a low leaching efficiency below 11.9%. These results benefit the risk evaluation and establishment of a maximum residue limit for PAEs in tea.
分类号: R15`S
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