title: Properties and antioxidant action of actives cassava starch films incorporated with green tea and palm oil extracts.
abstract: There is an interest in the development of an antioxidant packaging fully biodegradable to increase the shelf life of food products. An active film from cassava starch bio-based, incorporated with aqueous green tea extract and oil palm colorant was developed packaging. The effects of additives on the film properties were determined by measuring mechanical, barrier and thermal properties using a response surface methodology design experiment. The bio-based films were used to pack butter (maintained for 45 days) under accelerated oxidation conditions. The antioxidant action of the active films was evaluated by analyzing the peroxide index, total carotenoids, and total polyphenol. The same analysis also evaluated unpacked butter, packed in films without additives and butter packed in LDPE films, as controls. The results suggested that incorporation of the antioxidants extracts tensile strength and water vapor barrier properties (15 times lower) compared to control without additives. A lower peroxide index (231.57%), which was significantly different from that of the control (p<0.05), was detected in products packed in film formulations containing average concentration of green tea extracts and high concentration of colorant. However, it was found that the high content of polyphenols in green tea extract can be acted as a pro-oxidant agent, which suggests that the use of high concentration should be avoided as additives for films. These results support the applicability of a green tea extract and oil palm carotenoics colorant in starch films totally biodegradable and the use of these materials in active packaging of the fatty products.
authors.affiliation: Federal University of Bahia, College of Pharmacy, Department Food Science, Ondina, Salvador, BA, Brazil.
authors.forename: Kátya Karine Nery Carneiro Lins
authors.initials: KK
authors.lastname: Perazzo
authors.affiliation: Federal University of Bahia, College of Pharmacy, Department Food Science, Ondina, Salvador, BA, Brazil.
authors.forename: Anderson Carlos de Vasconcelos
authors.initials: AC
authors.lastname: Conceição
authors.affiliation: Federal University of Bahia, College of Pharmacy, Department Food Science, Ondina, Salvador, BA, Brazil.
authors.forename: Juliana Caribé Pires
authors.initials: JC
authors.lastname: dos Santos
authors.affiliation: Federal University of Bahia, Department of Chemical Engineering, Federação, Salvador, BA, Brazil.
authors.forename: Denilson de Jesus
authors.initials: Dde J
authors.lastname: Assis
authors.affiliation: Federal University of Bahia, College of Pharmacy, Department Food Science, Ondina, Salvador, BA, Brazil.
authors.forename: Carolina Oliveira
authors.initials: CO
authors.lastname: Souza
authors.affiliation: Federal University of Bahia, College of Pharmacy, Department Food Science, Ondina, Salvador, BA, Brazil.
authors.forename: Janice Izabel
authors.initials: JI
authors.lastname: Druzian
mesh_terms: D000975:Antioxidants / Q000737:chemistry* / Q000494:pharmacology; D002079:Butter; D002338:Carotenoids / Q000032:analysis; D005419:Flavonoids / Q000032:analysis; D018857:Food Packaging / Q000379:methods; D061353:Food Storage / Q000379:methods; D002365:Manihot / Q000737:chemistry*; D008567:Membranes, Artificial; D010084:Oxidation-Reduction / Q000187:drug effects; D000073878:Palm Oil; D010539:Permeability; D010545:Peroxides / Q000032:analysis; D010936:Plant Extracts / Q000737:chemistry* / Q000494:pharmacology; D010938:Plant Oils / Q000737:chemistry*; D059808:Polyphenols / Q000032:analysis; D015203:Reproducibility of Results; D013213:Starch / Q000737:chemistry*; D013227:Steam; D013499:Surface Properties; D013662:Tea / Q000737:chemistry*; D013818:Thermogravimetry / Q000379:methods; D013997:Time Factors
chemical_list: D000975:Antioxidants; D005419:Flavonoids; D008567:Membranes, Artificial; D010545:Peroxides; D010936:Plant Extracts; D010938:Plant Oils; D059808:Polyphenols; D013227:Steam; D013662:Tea; D002338:Carotenoids; D000073878:Palm Oil; D002079:Butter; D013213:Starch