In this trial, two tea cultivars named Meizhan and Maoxie were used in the investigation on the variation of polygalacturonase(PG) activity and soluble pectin contents in processing tea leaves during Zuoqing (new technique) and control(no Yaoqing ) treatments. Results showed that the activity of PG was increased slightly after Saiqing, it was gradually increased in the previous stage of Yaoqing and reached the peak in the completion of the 3rd Yaoqing proccces. The PG activity showed significant variation between diffreret cultivars and various Yaoqing stage. The PG activity and the range of variation were significantly lower in the control than that in the Yaoqing treatment. A significant correlation between the control of water and soluble pectin, and the PG activity.
TANG Hao
,
YANG Wei-li
,
WEN Hai-tao
. Variation of Polygalacturonase Activity and its Biochemical Effects in Zuoqing Stage of Oolong Tea New Techniques[J]. Journal of Tea Science, 2005
, 25(3)
: 197
-202
.
DOI: 10.13305/j.cnki.jts.2005.03.007
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