کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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21066 | 43204 | 2011 | 5 صفحه PDF | دانلود رایگان |
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.
Journal: Journal of Bioscience and Bioengineering - Volume 111, Issue 2, February 2011, Pages 232–236