| Grant number: | 21/05092-7 |
| Support Opportunities: | Regular Research Grants |
| Start date: | February 01, 2022 |
| End date: | July 31, 2024 |
| Field of knowledge: | Agronomical Sciences - Food Science and Technology - Food Technology |
| Principal Investigator: | Henriette Monteiro Cordeiro de Azeredo |
| Grantee: | Henriette Monteiro Cordeiro de Azeredo |
| Host Institution: | Embrapa Instrumentação Agropecuária. Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA). São Carlos , SP, Brazil |
| Associated researchers: | Caio Gomide Otoni ; José Manoel Marconcini ; Luiz Henrique Capparelli Mattoso |
| Associated scholarship(s): | 24/01707-5 - Characterization of by-products from industrial fruit processing and preparation of biodegradable films,
BP.TT 23/05303-3 - Preparation and characterization of biodegradable films from fruit processing byproducts., BP.TT 22/02457-7 - Elaboration of biodegradable films from fruit by-products, BP.TT |
Abstract
The proposal involves the production of biodegradable films with active (antioxidant, antimicrobial and/or UV absorber) properties from bulk fruit processing byproducts. The first step will be to analyze the chemical composition and to make preliminary tests on processing byproducts from orange, passion fruit, pineapple, mango, and banana (as well as on their mixtures). At least four byproducts and/or mixtures will be selected for the further steps. After drying and milling, the byproducts will be subjected to four alternative pretreatments (including acid, alkaline, and thermal treatments) to avoid film cracking resulting from undesirable interactions between components. The chemical changes resulting from each pretreatment will be studied. After the pretreatments, the dispersions will be submitted to degassing and batch casting. The films will be characterized in terms of tensile, thermal and optical properties, water vapor barrier, water solubility, antioxidant and antimicrobial activities, as well as ultrastructure and interactions between components. If necessary, adjustments on the tensile properties will be made by using plasticizers and/or reinforcing agents. Selected byproducts and/or mixtures will be submitted to continuous casting (simulating pilot scale). The film properties (especially the tensile ones) will be compared to those of low-density polyethylene, in order to evaluate their relative performance and prospection of applications. (AU)
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