The vacuum freezing dry technique was applied during the drying process of the faint-scent type oolong tea. Compared with the freezing tea and baked tea, the contents of linalool, aromadendrene, β-caryophyllene, isovaleric acid phenethyl ester, β-cadinene, nerolidol, farnesol and hexatriacontane were higher in the freezing-dry tea. The vacuum freezing-dry technique could help to preserve the properties of color, aroma, flavor of oolong tea efficiently so that the freezing-dry tea had a strong flower scent, and its mellow was full of flavor. Therefore, the freezing-dry tea abowed a better quality in general compared with freezing tea and baked tea and would have a good prospective in the market in addition to its long storage and convenience in transportation.
YE Nai-xing
,
YANG Ru- xing
,
YANG Guang
,
YANG Jiang-fan
,
LIANG Xiao-xia
,
ZHENG De-yong
. Effects of Vacuum Freezing Dry on the Aroma Quality of Oolong Tea[J]. Journal of Tea Science, 2006
, 26(3)
: 181
-185
.
DOI: 10.13305/j.cnki.jts.2006.03.005
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