| Journal: | Brazilian journal of chemical engineering |
| Database: | PERIÓDICA |
| System number: | 000309085 |
| ISSN: | 0104-6632 |
| Authors: | Carvalho, R.A. de1 Grosso, C.R.F2 |
| Institutions: | 1Universidade Estadual Paulista "Julio de Mesquita Filho", Faculdade de Zootecnia e Engenharia de Alimentos, Pirassununga, Sao Paulo. Brasil 2Universidade Estadual de Campinas, Departamento de Alimentos e Nutricao, Campinas, Sao Paulo. Brasil |
| Year: | 2006 |
| Season: | Mar |
| Volumen: | 23 |
| Number: | 1 |
| Pages: | 45-53 |
| Country: | Brasil |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Experimental, aplicado |
| English abstract | Edible and/or biodegradable films usually have limited water vapor barriers, making it difficult to use them. Thus, the objective of this work was to evaluate the effect of a chemical reticulation treatment with formaldehyde and glyoxal on the mechanical properties, water vapor permeability, solubility and color parameters of gelatin-based films. Formaldehyde and glyoxal were added to the filmogenic solution in concentrations ranging from 3.8 to 8.8 mmoles/100 mL of filmogenic solution and 6.3 to 26.3 mmoles/100 mL of filmogenic solution, respectively. The treatments caused a reduction in permeability to water vapor and in solubility. Only the treatment with formaldehyde caused a significant increase in rupture tension for concentrations above 6.3 mmoles/100 mL of filmogenic solution. Scanning electron microscopy indicated a loss of matrix orientation due to the chemical reticulation treatment |
| Disciplines: | Química |
| Keyword: | Química de alimentos, Películas biodegradables, Películas de gelatina, Glioxal formaldehído |
| Keyword: | Chemistry, Food chemistry, Biodegradable films, Gelatin films, Formaldehyde glyoxal |
| Full text: | Texto completo (Ver HTML) |
