Assessment of active chitosan films incorporated with gallic acid. (April 2020)

• Record Type: Journal Article
• Authors: Zarandona, I.; Puertas, A.I.; Dueñas, M.T.; Guerrero, P.; de la Caba, K.
• Is Part Of: Food hydrocolloids. Volume 101(2020)
• Publication Date: 2020-04
• Subjects: Chitosan -- Gallic acid -- Film -- Antioxidant -- Antimicrobial; Hydrocolloids -- Periodicals; Food additives -- Periodicals; Colloïdes -- Périodiques; Aliments -- Additifs -- Périodiques; Colloids; Food additives; Periodicals; Electronic journals; 664.06
• DOI: 10.1016/j.foodhyd.2019.105486
• Languages: English
• ISSNs: 0268-005X

Abstract

Abstract: Chitosan films with antioxidant and antimicrobial properties were prepared by the incorporation of gallic acid as a bioactive. The films obtained were homogeneous, transparent and colorless with high mechanical resistance. Results indicated that films had antimicrobial activity against E. coli, especially those films plasticized with 15 wt % glycerol and containing 20 wt % gallic acid, which showed the biggest inhibition halo. Additionally, gallic acid-incorporated chitosan films exhibited a great antioxidant activity with DPPH scavenging capacity values of 99% and a bioactive release of 33% after 4 days, suggesting the potential suitability of these modified chitosan films as active films for food or pharmaceutical purposes. Graphical abstract: Image 1022 Highlights: Transparent, colorless and homogeneous gallic-acid chitosan films were prepared. Gallic acid-incorporated chitosan films showed a DPPH scavenging capacity of 99%. Plasticized films with gallic acid showed the biggest antibacterial activity.