Development of a Halochromic, Antimicrobial, and Antioxidant Starch-Based Film Containing Phenolic Extract from Jaboticaba Peel

• Published in: Foods Vol. 12; no. 3; p. 653
• Main Authors: Luz, Rafaela F, Ferreira, Richard D R, Silva, Cassio N S, Miranda, Bruna M, Piccoli, Roberta H, Silva, Monique S, Paula, Ladyslene C, Leles, Maria Inês G, Fernandes, Kátia F, Cruz, Maurício V, Batista, Karla A
• Format: Journal Article
• Language: English
• Published: Switzerland MDPI AG 01.02.2023; MDPI
• Subjects: active packaging; Antiinfectives and antibacterials; Antimicrobial agents; Antioxidants; bioactive film; Design factors; Design optimization; E coli; Ethanol; Food; Food quality; Food science; Fruit; Glycerol; Halochromism; Health aspects; Lattice design; Microbial contamination; Microbial mats; Microorganisms; Nutrition; Permeability; Phenolic compounds; phenolic extract; Phenols; Polymers; Properties; Reagents; Starch; UV-absorber; Water vapor; Brazil; United States > US; Germany; UV-absorber; active packaging; phenolic extract; bioactive film
• ISSN: 2304-8158; 2304-8158
• DOI: 10.3390/foods12030653

In this study, the antioxidant, antimicrobial, mechanical, optical, and barrier attributes of starch bio-based edible films incorporated with a phenolic extract from jaboticaba peel were investigated. Aiming to determine the effect of the polymers and the phenolic extract on the properties of the films, a three-factor simplex-lattice design was employed, and the formulation optimization was based on the produced films' antioxidant potential. The optimized formulation of the starch-PEJP film showed a reddish-pink color with no cracks or bubbles and 91% antioxidant activity against DPPH radical. The optimized starch-PEJP film showed good transparency properties and a potent UV-blocking action, presenting color variation as a function of the pH values. The optimized film was also considerably resistant and highly flexible, showing a water vapor permeability of 3.28 × 10 g m h Pa . The microbial permeation test and antimicrobial evaluation demonstrated that the optimized starch-PEJP film avoided microbial contamination and was potent in reducing the growth of , , and spp. In summary, the active starch-PEJP film showed great potential as an environmentally friendly and halochromic material, presenting antioxidant and antimicrobial properties and high UV-protecting activity.