Catechin Analysis of Tea Studio Teas

Thanks to Gurmeet Singh of Unilever for these very promising results from 9 of the Tea Studio's in the lab.

The units are % weight of catechin/weight of tea leaf dry weight.

The ISO method was used for analysis.

The sample prep included:

- finely grinding tea  (< 0.5mm)

- representative sample of ground tea (0.2g)

C) 70% methanol°- exhaustive double extraction with hot (70

- extracted sample in stop mix to prevent oxidationof catechins

- analysis by HPLC