Efeito da aplicação de filmes biodegradáveis contendo extratos de alecrim (Rosmarinus officinalis L.) e sálvia (Salvia officinalis L.) na estabilidade da manteiga em tablete

Abstract

Butter quality is affected by degradation reactions during storage, which can be reduced with the use of natural antioxidants. The addition of antioxidants can be done in active packages that, when interacting with the product, delay these effects. This work was organized into three chapters, the first with an introduction and the theoretical framework, the second with the article resulting from the research and the third with directions for future efforts. The objective of this work was to elaborate biodegradable films containing extracts of rosemary and sage and apply them as active packaging in tablet butter. The DCCR design was used with three independent variables: rosemary extract concentration, sage extract concentration and time. The butters were packed with films and stored at 5ºC, 15ºC and 15ºC with films and coated paper for 60 days. The films were characterized by visual evaluation, color, moisture, solubility, thickness, fat permeability, transmittance and absorbance. The results were submitted to analysis of variance and means compared by the Scott-Knott test (p<0.05). The butter was analyzed by the peroxide index, acidity and phenolic compounds. The color stability of films and butters during storage was evaluated. Data were analyzed by multiple regression and the factors and interactions that had a significant linear effect (p<0.05) were presented. The extracts influenced the characteristics of the films, mainly higher concentrations of sage. In the analyzes of butters and films, lower concentrations of rosemary extract combined with higher concentrations of sage extract proved to be more efficient in delaying deterioration reactions. It was concluded that the use of active packaging with rosemary and sage extracts in butter is viable and beneficial to its conservation during storage. Films associated with coated paper packaging are indicated, replacing the aluminum used in traditional packaging, due to the biodegradable appeal and greater conservation of the product.