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https://hdl.handle.net/1822/34939
Título: | Chlorella vulgaris biomass enriched by biosorption of polyphenols |
Autor(es): | Jelínek, Luká Procházková, Gita Quintelas, C. Beldíková, Elika Brányik, Tomáš |
Palavras-chave: | Microalgae Phenolic compounds Adsorption isotherms Adsorption kinetics Antioxidant activity |
Data: | 2015 |
Editora: | Elsevier B.V. |
Revista: | Algal Research |
Citação: | Jelinek, L., Prochazkova, G., Quintelas, C., Beldikova, E., & Branyik, T. (2015). Chlorella vulgaris biomass enriched by biosorption of polyphenols. Algal Research-Biomass Biofuels and Bioproducts, 10, 1-7. doi: 10.1016/j.algal.2015.04.006 |
Resumo(s): | Cell walls of microalgae are variable and contain non-specific domains where different molecules can bind. The enrichment of microalgal biomass with nutrients through adsorption can be an interesting process for the food and feed industry. In this study, naturally occurring polyphenols ((+)-catechin, ()-epicatechin, quercetin, rutin and xanthohumol) were adsorbed onto nonliving cells of freshwater microalgae Chlorella vulgaris. The essential adsorption parameters such as biomass dose and contact time were examined and the adsorption was quantified with Langmuir, Sips and DubininRadushkevich adsorption isotherms. The evaluation of isotherms proved the highest affinity towards Chlorella vulgaris biomass for xanthohumol and quercetin. The biosorption mechanism of Chlorella vulgaris biomass was well described by a pseudo second order kinetic model, with a high regression coefficient. The polyphenol-enriched microalgal biomass was also evaluated for its antioxidant activity. The highest antioxidant activity was detected in the case of biomass enriched with quercetin (77.5% of decolorized DPPH). |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/34939 |
DOI: | 10.1016/j.algal.2015.04.006 |
ISSN: | 2211-9264 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | CEB - Publicações em Revistas/Séries Internacionais / Publications in International Journals/Series |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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document_19935_1.pdf | 480,19 kB | Adobe PDF | Ver/Abrir |