Evaluation of the effect of processing on cocoa polyphenols: antiradical activity,anthocyanins and procyanidins profiling from raw beans to chocolate |
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| Authors: | Matteo Bordiga Monica Locatelli Fabiano Travaglia Jean Daniel Coïsson Giuseppe Mazza Marco Arlorio |
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| Affiliation: | 1. Dipartimento di Scienze del Farmaco & Drug and Food Biotechnology Center, Universita' degli Studi del Piemonte Orientale “A. Avogadro”, Novara, Italy;2. Pacific Agri‐Food Research Centre, Agriculture and Agri‐Food Canada, Summerland, BC, Canada |
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| Abstract: | The content and composition of anthocyanins and procyanidins in fermented cocoa beans (from different geographic origins: Ecuador, Cameroon, Ivory Coast, Ghana and Nigeria), roasted nibs, cocoa mass and chocolate were determined, beside the determination of the total antiradical capacity. Concerning geographic origin, cocoa beans and processed products from Ecuador showed the highest levels of anthocyanins, followed by Nigeria and Cameroon. Generally, as cocoa beans were further processed, the levels of anthocyanins and flavan‐3‐ols decreased. The largest observed losses of phenolics occurred during roasting. A progressive decreasing trend in polyphenol concentration was observed in the other processed samples as well. Despite the original content of polyphenols in raw cocoa beans, technological processes imply a significant impact on cocoa quality, confirming the need of specific optimisation to obtain high value chocolate. |
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| Keywords: | Anthocyanins antiradical activity chocolate cocoa cocoa processed products flavan‐3‐ols |
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