Production of green tea EGC- and EGCG-enriched fractions by a two-step extraction procedure

Production of green tea EGC- and EGCG-enriched fractions by a two-step extraction procedure

Author: Laurent Bazinet and David Labbé and Angelo Tremblay

The aim of the present work was to test the feasibility of a two-step extraction procedure to fractionate EGCG and EGC from green tea. This work was based on previous observations that there was a variable interdependence between the brewing duration and the brewing temperature on catechin concentrations: EGC being a time-dependent compound while EGCG being a time/temperature-dependent compound. It appeared from these results that it was possible to produce from green tea, on a simple way with adding no organic solvent, an EGC-enriched extract (78.9% total catechins) in the first step and an EGCG-enriched extract (47.6% total catechins) in the second step. The two-step brewing procedure based on the temperature-dependent solubilization of both major catechins, EGC and EGCG, allowed the production of such extracts by decreasing ash and EGC contents during the second step extraction.

 

 

Get the whole article here

Shipping Icon Free Shipping + Free Returns
Subscription Details Icon
We stand behind our teas and teaware, and want you to be not just satisfied with them, but thrilled. If for any reason you're not, just let us know and we'll do our best to make it right.

{property.value} {property.value} {property.value} Include jar: {property.value}
×
You definitely need tools!
Perfect coldbrew everytime
The ideal way to store your matcha
The ideal way to store your matcha