A simple and efficient method for enrichment of cocoa polyphenols from cocoa bean husks with macroporous resins following a scale-up separation
| Autor: | Yu-Chao Gu, Wei-Dong Yan, Nadeem Muhammad, Jia-Lun Zhong |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Decaffeination
Chromatography Chemistry 04 agricultural and veterinary sciences COCOA BEAN 040401 food science Husk food.food 03 medical and health sciences 0404 agricultural biotechnology 0302 clinical medicine food Adsorption Volume (thermodynamics) Polyphenol Yield (chemistry) Desorption 030221 ophthalmology & optometry Food Science |
| Zdroj: | Journal of Food Engineering. 243:82-88 |
| ISSN: | 0260-8774 |
| Popis: | The aim of this study is to develop an efficient method for the decaffeination and enrichment of the polyphenols from cocoa husks extracts. LX-17 was selected for the exploration of optimal processing parameters from eight kinds of macroporous resins. The adsorption kinetics and thermodynamics of (−)-epicatechin (EC) were studied prior to the scale-up separation. The optimum parameters for separation were as follow: 6.0 mg/mL cocoa extracts, pH 2.0, 25 °C column temperature, flow rates of adsorption and desorption 1.6 BV/h (Bed Volume, the volume of the resin) and ethanol-water (20:80, 50:50, 95:5, v/v) solutions in the gradient elution. In the scale-up separation, 2 kg of cocoa husks were extracted in 20 L 50% ethanol solutions, separated on 3 L LX-17 resins and yielded 34.99 g cocoa polyphenols. This method significantly increased the total polyphenol contents from 2.23% to 62.87% with a recovery yield of 78.57%. |
| Databáze: | OpenAIRE |
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