Desenvolvimento de filmes de quitosana pela técnica de layer-by-layer para proteção pós-colheita de manga Palmer
Desenvolvimento de filmes de quitosana pela técnica de layer-by-layer para proteção pós-colheita de manga Palmer
-
DOI: https://doi.org/10.22533/at.ed.6562522052
-
Palavras-chave: Filmes comestíveis; quitosana; cera de carnaúba
-
Keywords: edible films; chitosan; carnauba wax
-
Abstract: Post-harvest fruit conservation is challenging for producers, traders and consumers, especially in tropical fruits such as mango. The application of edible films is a relevant strategy to prevent spoilage, creating a barrier against moisture loss, gas exchange and microbiological action. The layer-by-layer deposition technique, LbL (Layer-by-Layer), can be used to create these films. Chitosan, obtained from the exoskeleton of crustaceans, and carnauba wax are used in these solutions, offering antimicrobial properties, biocompatibility, biodegradability, abundance and low cost. Oregano essential oil can also be used due to its antioxidant, antimicrobial and anti-inflammatory properties. In this context, the project proposed the manufacture, characterization and investigation of LbL edible films containing chitosan, carnauba wax and oregano essential oil. Tests to evaluate the effectiveness of the protective films were conducted using Palmer sleeve samples. The results obtained indicate that films made from chitosan, combined with carnauba wax and oregano essential oil, are effective in protecting fruits. These films have favorable characteristics such as good handling, texture, appearance and thickness, in addition to being biodegradable in both water and soil. Notably, mangoes treated with films containing wax and oregano essential oil maintained their appearance and weight for longer periods, highlighting the potential of these films. Thus, the results suggest that chitosan films and natural extracts represent a viable alternative for protecting fruits after harvest.
- Anna Paulla Ferreira Araújo Zanoli
- Rafaella Ferreira Maia
- Eveline Soares Costa
- Hellen Franciane Gonçalves Barbosa
- Rafael de Oliveira Pedro