顶空固相微萃取-气质联用法测定不同陈化时间普洱茶香气成分

目的测定不同陈化时间普洱茶的挥发性组分。方法采用顶空-固相微萃取-气质联用法(SPME-GC/MS)测定18个普洱茶挥发性物质。结果从18个普洱茶中共鉴定出98种挥发性物质,包括14种甲氧基酚类、11种醛类、15种醇类、13种酮类、4种酯类、2种呋喃类、2种含N化合物、35种碳氢化合物及2种其他类物质。陈化时间短(4年)的普洱生茶中醇类(31.01%)和碳氢化合物(22.92%)含量高,甲氧基酚类化合物含量低(1.3%),具有明显的晒青毛茶香气特征。陈化时间长(≥25年)的普洱生茶和普洱熟茶聚成一类,这类普洱陈茶甲氧基酚类化合物含量高(7.52%-39.17%),且不同陈化时间的普洱茶样本之间...

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Published in食品安全质量检测学报 Vol. 7; no. 6; pp. 2396 - 2414
Main Author 陈梅春 刘晓港 朱育菁 潘志针 张海峰 刘波
Format Journal Article
LanguageChinese
Published 福建省农业科学院农业生物资源研究所,福州,350003%福州大学生物科学与工程学院,福州,350001%福建省农业科学院,福州,350003 2016
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ISSN2095-0381

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Summary:目的测定不同陈化时间普洱茶的挥发性组分。方法采用顶空-固相微萃取-气质联用法(SPME-GC/MS)测定18个普洱茶挥发性物质。结果从18个普洱茶中共鉴定出98种挥发性物质,包括14种甲氧基酚类、11种醛类、15种醇类、13种酮类、4种酯类、2种呋喃类、2种含N化合物、35种碳氢化合物及2种其他类物质。陈化时间短(4年)的普洱生茶中醇类(31.01%)和碳氢化合物(22.92%)含量高,甲氧基酚类化合物含量低(1.3%),具有明显的晒青毛茶香气特征。陈化时间长(≥25年)的普洱生茶和普洱熟茶聚成一类,这类普洱陈茶甲氧基酚类化合物含量高(7.52%-39.17%),且不同陈化时间的普洱茶样本之间香气特征相似,仅通过香气无法推断其陈化时间。结论本研究为消费者正确认识和收藏普洱茶提供一定的参考依据。
Bibliography:Pu-erh tea; aroma compounds; solid phase microextraction; gas chromatography-mass spectrometry
11-5956/TS
CHEN Mei-Chun, LIU Xiao-Gang, ZHU Yu-Jing, PAN Zhi-Zhen, ZHANG Hai-Feng, LIU Bo(1. Agricultural Bioresources Research Institute, Fujian Academy of Agricultural Sciences, Fuzhou, 350003, China; 2. College of Biological Science and Engineering, Fuzhou University, Fuzhou, 350001, China; 3. Fujian Academy of Agricultural Sciences, Fuzhou 350003, China)
Objective To study the volatile compounds of different aged Pu-erh teas. Methods The volatile components were analyzed by solid phase microextraction(SPME) combined with gas chromatography-mass spectrometry(GC-MS). Results It showed that a total of 98 volatile compounds were identified by matching EI mass spectra and retention indices with the literature data, including 14 methoxy-phenolic, 11 aldehydes, 15 alcohols, 13 ketones, 4 esters, 2 furans, 2 N-containing compounds, 35 hydrocarbons and two others compounds. Aged Pu-erh tea with short storage year(4 years)
ISSN:2095-0381