Abstract:
ObjectiveThe quality of albino tea after being introduced in Jiangsu was studied to provide reference for its in-troduction,cultivation and quality management.MethodSamples were taken from main tea planting areas in Jiangsu(Zhang-miao,Jurong;Huishan,Wuxi;Yushan,Yixing;Songling,Liyang;Xuebu,Jintan;Henan,Gaochun;Kongzhen,Lishui;Xieji,Yizheng)and place of origin for Anji white tea(Xilong,Anji,Zhejiang).Quality components such as chlorophyll,miner-al element,free amino acid and tea polyphenol of albino tea from different areas were analyzed,and the processed tea quality were evaluated combining sensory evaluation.ResultChlorophyll contents in fresh leaf from nine albino tea gardens were at a low level on the whole,albino degree of fresh leaf was higher.The total chlorophyll content(0.40 mg/g)and SPAD value(12.5) of albino leaves in Yizheng,Xieji were the lowest among all of them. There were differences in macroelements and trace elements of albino tea fresh leaves from different areas.Macroelements and trace elements(excepted manganese)were found at a high level in leaves from Yizheng,Xieji,moreover,the content of free amino acids in fresh leaves in this area was the highest (6.03%),and the content of tea polyphenols was the lowest(14.90%),and the ratio of tea polyphenol to amino acid was also the lowest(2.49).The content of free amino acids and tea polyphenols in fresh leaves were high from Xilong,Anji;Songling, Liyang;Huishan,Wuxi and Zhangmiao,Jurong.Their ratios of tea polyphenol to amino acid were all lower than 8.00,and presented good quality. Sensory evaluation results showed that the processed albino tea in Xilong,Anji had the best perfor-mance,its appearance,aroma,taste and infused leaf ranked the top with a total score of 92.0.The processed albino tea from tea gardens in Huishan,Wuxi;Songling,Liyang and Zhangmiao,Jurong presented sound performance with a total score over 90.0.Their taste,soup color and aroma were seconded to those processed in the place of origin.ConclusionAlbino tea can be introduced in main tea planting areas in Jiangsu(Xieji,Yizheng;Huishan,Wuxi;Songling,Liyang;Zhangmiao,Jurong) to increase the market share of Jiangsu albino tea.