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natural bio green tea extract powder
-tea polyphenol 20%-98%
-egcg 15%-98%
-catechin 30%-90%
-yellow brown powder
specification
polyphenol 98%, egcg 50%, caffeine <1%
polyphenol 95%, egcg 45%, caffeine >1%
polyphenol 98%, egcg 40%
polyphenol 98%, catichin 80%, egcg 60%, caffeine 1%
tea polyphenols: 40%--98% uv
tea catechins: 20%--90% hplc
egcg: 6%-98% hplc
caffeine: 0.5%-10%
test methods:hplc
item |
specification |
polyphenol |
30%-75% polyphenol by folin-c |
egcg |
40% |
caffeine |
< 1% |
appearance |
yellow brown powder |
odor & taste |
characteristic |
particle size |
80-100 mesh |
loss on drying |
< 5.0% |
ash |
< 3.0% |
heavy metals |
< 10ppm |
total plate count |
<1000cfu/g |
yeast & mold |
<100 cfu/g |
salmonella |
negative |
e.coli |
negative |