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Anthocyanins concentration by adsorption onto chitosan and alginate beads: Isotherms, kinetics and thermodynamics parameters.
Pinheiro, Cláudio P; Moreira, Loreane M K; Alves, Stephany S; Cadaval, Tito R S; Pinto, Luiz A A.
Afiliação
  • Pinheiro CP; Industrial Technology Laboratory, School of Chemistry and Food, Federal University of Rio Grande - FURG, km 8 Italia Avenue, 96203-900 Rio Grande, RS, Brazil.
  • Moreira LMK; Industrial Technology Laboratory, School of Chemistry and Food, Federal University of Rio Grande - FURG, km 8 Italia Avenue, 96203-900 Rio Grande, RS, Brazil.
  • Alves SS; Industrial Technology Laboratory, School of Chemistry and Food, Federal University of Rio Grande - FURG, km 8 Italia Avenue, 96203-900 Rio Grande, RS, Brazil.
  • Cadaval TRS; Industrial Technology Laboratory, School of Chemistry and Food, Federal University of Rio Grande - FURG, km 8 Italia Avenue, 96203-900 Rio Grande, RS, Brazil.
  • Pinto LAA; Industrial Technology Laboratory, School of Chemistry and Food, Federal University of Rio Grande - FURG, km 8 Italia Avenue, 96203-900 Rio Grande, RS, Brazil. Electronic address: dqmpinto@furg.br.
Int J Biol Macromol ; 166: 934-939, 2021 Jan 01.
Article em En | MEDLINE | ID: mdl-33152365
The anthocyanins health benefits are diverse, but numerous factors affect the anthocyanins stability, thus, this work aimed to extract anthocyanins from Pinot Noir grape skins and, afterward, to concentrate them onto edible and safety adsorbents, chitosan and alginate beads, by adsorption operation. Chitosan was obtained from shrimp waste, and alginate was purchased. Batch adsorption experiments were carried out as pH function, and the highest adsorption capacities and removal percentages were, respectively, 216 mg g-1 and 65% for chitosan beads at pH 8, and 126.4 mg g-1 and 38% for alginate beads at pH 4. All equilibrium isotherms models were suitable for chitosan beads, while for alginate beads only Langmuir and Freundlich models showed fitting. The thermodynamic parameters demonstrated physical adsorption and endothermic behavior for the chitosan and alginate beads. The pseudo-first order model best described the kinetic behavior for both beads. It was demonstrated that is possible to concentrate the different molecular structures of anthocyanins onto chitosan and alginate beads with high yields.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Quitosana / Alginatos / Antocianinas Tipo de estudo: Prognostic_studies Idioma: En Revista: Int J Biol Macromol Ano de publicação: 2021 Tipo de documento: Article País de afiliação: Brasil País de publicação: Holanda
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Quitosana / Alginatos / Antocianinas Tipo de estudo: Prognostic_studies Idioma: En Revista: Int J Biol Macromol Ano de publicação: 2021 Tipo de documento: Article País de afiliação: Brasil País de publicação: Holanda