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Preparation of tea catechins using polyamide

Paper ID Volume ID Publish Year Pages File Format Full-Text
21066 43204 2011 5 PDF Available
Title
Preparation of tea catechins using polyamide
Abstract

An adsorption separation method using Polyamide-6 (PA) as an adsorbent was developed to separate catechins from green tea extract. The adsorption capacity of total catechins for PA was 193.128 mg g−1 with an adsorption selectivity coefficient KAB of total catechins over caffeine 21.717, which was better than macroporous resin model HPD 600. The Langmuir model and the pseudo-second order mode were primely fitted to describe its equilibrium data and adsorption kinetics, respectively. PA column separation by two-step elution using water and 80% (v/v) aqueous ethanol was established to prepare catechins complex which contained 670.808 mg g−1 total catechins and 1.828 mg g−1 caffeine. It is considered that PA was a promising adsorbent for selective isolation of catechins.

Keywords
Camellia sinensis; Caprolactam; Caffeine-free; Two-step elution
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Bioscience and Bioengineering - Volume 111, Issue 2, February 2011, Pages 232–236
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
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