Analysis of the Effect of Environmental Temperature on the Quality of'Wuyi Rougui'during Zuoqing Process
To explore the effects of different environmental temperatures on the quality of Wuyi Rougui during Zuoqing process,resh leaves of oolong tea cultivar'Rougui'were used as raw material and processed according to the processing technology of Wuyi rock tea.The Zuoqing environmental temperatures were set at 18,24 and 30 ℃,and the main biochemical components such as sensory quality,water extracts,tea polyphenols,flavonoids and free amino acids were analyzed.The results show that the comprehensive score of sensory quality of'Rougui'tea processed at 24 ℃ was higher than that at 18 and 30 ℃,and its aroma was distinctly floral and mellow.There was no significant difference in the extract content of'Rougui'tea processed at different Zuoqing environmental temperature,and the environmental temperature of 18 ℃ was the highest(P＞0.05).The content of flavonoids in'Rougui'tea processed at 30 ℃ was significantly higher than that in'Rougui'tea processed at 18 and 24 ℃(P＜0.05).The content of tea polyphenols in Rougui tea processed at 18 ℃ was significantly higher than that in'Rougui'tea processed at 24 and 30 ℃(P＜0.05).Higher levels of flavonoids and tea polyphenols enhanced the bitterness of tea soup,which was consistent with the sensory evaluation results of the bitter taste of'Rougui'tea processed at 18 and 30℃.The content of free amino acids in'Rougui'tea processed at 24 ℃ was significantly higher than that in'Rougui'tea processed at 18 and 30 ℃(P＜0.05),and the higher content of free amino acids,the better taste of Rougui tea,which was consistent with the sensory evaluation results of the mellow taste of'Rougui'tea processed at 24 ℃.In summary,the quality of'Rougui'tea processed at 24 ℃ was better than that of tea samples processed at 18 and 30 ℃.It can be seen that the suitable environmental temperature for the Zuoqing process of'Rougui'tea is 24 ℃,which provided a reference for the improvement of the quality of'Wuyi Rougui'Tea.
万方数据
维普
