Cláudia Leites Luchese*, Julia Menegotto Frick Pavoni, Jordana Corralo Spada, Isabel Cristina Tessaro
Journal of Renewable Materials, Vol.7, No.3, pp. 235-243, 2019, DOI:10.32604/jrm.2019.00033
Abstract Corn starch, glycerol and agroindustrial residues were used to produce films by casting. By-products from juice processing, blueberry and jaboticaba in powder with different particle sizes were added in the filmogenic matrix to evaluate its potential as a colorimetric indicator. Blueberry and jaboticaba peels are commonly discarded although contain high amount of important compounds as anthocyanins. These compounds have the ability to color change after immersion in different pH values, demonstrating its potential for the intelligent packaging development. Analyses were performed in a colorimeter after films immersion in different buffer solutions. Visual color changes were perceived; reddish and bluish color… More >
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