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- W2111333393 abstract "pH can be used as indicative of food product quality and safety consumption. pH indicators can allow the consumer to evaluate a product without opening the package. With the aim of developing packages with pH indicators, and also biodegradable, this work proposes to study the use of fruit and vegetable pomace as a source of pH indicators (anthocyanin and chlorophyll) on color change of cassava starch biobased films plasticized with sucrose and inverted sugar. Cassava starch-plasticized films containing grape and spinach pomace were storage at 75 %RH and 23 °C, at least 4 days prior the analyses. The materials were exposed to different pH solutions (4, 7, 10) and their color parameters (L, a, b and haze) were analyzed by transmittance with a color Quest XE, Hunter Lab equipment. The biofilms were also characterized through their mechanical properties (tensile strength and elongation at break percentage), water vapor permeability, glass transition temperature and total solids content. To evaluate the pH indicator activity and the material characterization, a design experiment (2 2 ) with 3 central points, totalizing 11 experiments, was applied. The results were evaluated through ANOVA, considering the pure error. The Pareto analysis was also performed to observe the significant effect (with 95% confidence) of the antioxidant components on the color change of biofilms during storage. Grape and spinach pomace have affected the material characterization. The results indicated that grape pomace can be used to produce pH indicator films." @default.
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- W2111333393 date "2006-01-01" @default.
- W2111333393 modified "2023-09-26" @default.
- W2111333393 title "Investigation of Natural Additives as pH Indicators for Cassava Starch Biobased Materials" @default.
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