Influence of Blueberry and Jaboticaba Agroindustrial Residue Particle Size on Color Change of Corn Starch Based Films Submitted to Different pH Values Solutions

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 in acidic and basic pH values, respectively. Independently of the particle size, the ΔE* values were greater than 5, showing visually perceptible change to the human eye. The results indicate the potential of use of these residues as a pH indicator for the development of renewable and biodegradable sensor of food deterioration.

Biopolymer‐based intelligent packaging integrated with natural colourimetric sensors for food safety and sustainability

“…Furthermore, incorporating anthocyanin‐rich natural sources like purple potato and various berries (blackberry, blueberry, black chokeberry, jaboticaba) into these films not only enhances their efficacy for intelligent packaging applications but may also amplify their antioxidant activity, potentially contributing to the prolonged freshness of perishable goods. 44 , 45 , 46 , 47 , 48 , 49 Notably, anthocyanins extracted from red cabbage and black carrots are widely used in the creation of intelligent packaging. Numerous studies have demonstrated their efficacy in detecting spoilage in seafood such as fish and shrimp, pasteurized milk and in sensing environmental changes.…”

Filmes biodegradáveis e agentes de reforço vegetais: Um enfoque em estudos brasileiros sob a ótica da economia circular

“…Atualmente, resíduos agroindustriais podem ser utilizados na produção de ração animal, biocombustível, compostos bioativos, enzimas, entre outros bioprodutos (Sharma et al, 2021;Velarde et al, 2020;Takeyama et al, 2020; sendo, uma promissora alternativa o uso desses resíduos para desenvolvimento de filmes biodegradáveis (Luchese et al, 2021;Luchese et al, 2019) e filmes nanocompósitos (Coelho et al, 2020;Pelissari et al, 2017;Balakrishnan et al, 2017) com potencial aplicação como embalagem ativa (Crizel et al, 2018;Crizel et al, 2016). Nesse sentido, considerando a proeminente geração de resíduos alimentares no Brasil (Santos et al, 2020;Dal' Magro & Talamini, 2019), tais como resíduos de acerola, goiaba, abacaxi, caju, uva, laranja, mamão, maracujá, mandioca (Takeyama et al, 2020;Andrade et al, 2017;Silva et al, 2014;Souza et al, 2011), há potencialidade de valorização destes resíduos vegetais para o desenvolvimento de filmes, dado riqueza de componentes hábeis para formação de uma matriz polimérica (Souza et al, 2021;Acquavia et al, 2021;Otoni et al, 2017).…”

“…Ademais, o uso de plastificantes, como glicerol, pode ser necessário para formação de uma matriz contínua e melhora das propriedades mecânicas, uma vez que interferem na ligação de hidrogênio (Acquavia et al, 2020;Maraveas, 2020) e na interação macromolecular durante o rearranjo da amilopectina ou amilose (Fu et al, 2018). O amido de diferentes fontes vegetais e seus resíduos foram explorados para a elaboração de filmes, tais como amido de mandioca (Luchese et al, 2021;Huang et al, 2020), de arroz (Suriyatem et al, 2018), de quinoa (Pagno et al, 2015), de milho (Luchese et al, 2019), de araruta (Nascimento et al, 2021;Nogueira et al, 2019), de batata (Balakrishnan et al, 2017), de semente de jaca (Costa et al, 2021), semente de manga (Silva et al, 2019), de polpa de banana (Pelissari et al, 2017) e de polpa de maçã (Tirado-Gallegos et al, 2018).…”