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	Provedor de dados Ciênc. Tecnol. Aliment. (2) Autor AGUIRRE-LOREDO,Rocio Yaneli (1) CHEN,Yilun (1) PENG,Yong (1) RODRIGUEZ-HERNANDEZ,Adriana Inés (1) SHI,Jingying (1) VELAZQUEZ,Gonzalo (1) WANG,Qingguo (1) ZHANG,Xiaoyan (1) Mais... Palavra-chave Chitosan film (2) Antioxidant ability (1) GAB model (1) Green tea polyphenols (1) Moisture adsorption isotherm (1) Optimization (1) X-ray diffraction (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2020 (1) 2017 (1) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Optimization and release evaluation for tea polyphenols and chitosan composite films with regulation of glycerol and Tween Ciênc. Tecnol. Aliment. PENG,Yong; WANG,Qingguo; SHI,Jingying; CHEN,Yilun; ZHANG,Xiaoyan. Abstract In order to optimize the performance of chitosan-tea polyphenols composite films, effects of glycerol and Tween on the antioxidative activities and physical performance of chitosan composite films were evaluated. The results indicated that both flexibility and water vapour permeability of chitosan/tea polyphenols films were improved with the addition of glycerol, meanwhile the solubility and swelling degree decreased. Moreover, the release time of antioxidants from films was delayed with the addition of glycerol. The presence of Tween 20 had no significant effect on the tensile strength of films, but changed the DPPH radical scavenging activity depending on the blend ratio of glycerol and Tween. DSC, FTIR and X-ray analysis showed strong... Tipo: Info:eu-repo/semantics/article Palavras-chave: Chitosan film; Green tea polyphenols; Optimization; Antioxidant ability; X-ray diffraction. Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612020000100162 Modelling the effect of temperature on the water sorption isotherms of chitosan films Ciênc. Tecnol. Aliment. AGUIRRE-LOREDO,Rocio Yaneli; RODRIGUEZ-HERNANDEZ,Adriana Inés; VELAZQUEZ,Gonzalo. Abstract The interaction of the water molecules from the environment with foods and other materials can be evaluated using sorption isotherms. Films and biodegradable films are susceptible to changes in their functional characteristics due to adsorbed water. The amount of moisture that biodegradable films can adsorb depends on the temperature, relative humidity of the storage area and chemical composition. Several mathematical models can be used to describe the behavior of sorption isotherms in biodegradable films and some of them have been modified to include the temperature parameter into the equation. In this research, the original and modified BET, GAB, Halsey, Henderson and Oswin models were assessed to determine their suitability describing the... Tipo: Info:eu-repo/semantics/article Palavras-chave: Chitosan film; Moisture adsorption isotherm; GAB model. Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000100112 Registros recuperados: 2 Primeira ... 1 ... Última

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