Extratos naturais em biofilmes na pós-colheita de morango

Abstract

Currently, the interest in consuming fresh fruits is increasing, so some measures must be considered to maintain these fruits with good quality. Strawberries are increasingly present on the market and in society's consumption, but they deteriorate quickly and because of this, their commercialization faces some challenges to keep them with good quality for longer. One option to reduce degradation is the use of degradable edible coatings, that is, biofilms that cover the fruits and protect them for longer. The objective of this work was to study the use of cassava starch biofilm with the addition of Equisetum arvense (horsetail extract) and green propolis (propolis extract), in different concentrations, in the post-harvest conservation of strawberries. A completely randomized experimental design was used, with treatments based on cassava starch, varying the concentrations of Equisetum arvense and green propolis by 1.0%, 1.5% and 2.0% and the control treatment (biofilm only) evaluated. at intervals of 3, 6, 9, 12 and 15 days. Soluble solids, mass loss, fruit color, titratable acidity, ripening index and incidence of Botrytis cinerea were evaluated. It was observed that the 1.5% and 2.0% horsetail extract showed lower mass loss, higher Brix and provided the lowest incidence of Botrytis cinerea. For coloring, there was no significant interaction between treatments. Propolis concentrations of 1.0% and 1.5% provided less acidic fruits compared to the others.