The Oolong tea juice was ultra-filtrated by using the plate-frame module and choosing three kinds of CA membrane with three pore diameter . Study on effect of different ultra-filtration process on the contents of main compounds including tea polyphenols, amino acids, caffeine, soluble sugar, pectin, protein etc in Oolong tea juices and colour difference, sensory quality, pH, ultra-filtration flux, etc. The results showed that ultra-filtration can clarify the Oolong tea juice effectively. The ultra-filtration can obstruct high-molecular mass that easy to participate higher retaining rate of the main compounds under the suitable ultra-filtration parameter. Sensory quality of the green tea juice ultra-filtrated was fine.
YIN Jun-feng
,
QUAN Qi-ai
,
LUO Long-xin
,
QIAN Xiao-jun
. Study on Clarification of Oolong Tea Beverage by Ultra-filtration[J]. Journal of Tea Science, 2003
, 23(s1)
: 58
-62
.
DOI: 10.13305/j.cnki.jts.2003.s1.011
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