Preparation and characterization of films made of poly(l-lactic acid)/poly(l-lactic acid) grafted maleic anhydride/epigallocatechin gallate blends for antibacterial food packaging

The antimicrobial activity of films made of poly(l-lactic acid)/poly(l-lactic acid) grafted maleic anhydride(copolymer)/epigallocatechin gallate(EGCG) blend was determined. The effect of epigallocatechin gallate incorporation (0.03, 0.5, 5, and 10 wt%) as a natural antibacterial was determined by di...

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Bibliographic Details
Published in:Journal of plastic film & sheeting 2017-01, Vol.33 (1), p.10-34
Main Authors: Moreno-Vásquez, María J, Plascencia-Jatomea, Maribel, Sánchez-Valdes, Saúl, Castillo-Yáñez, Francisco J, Ocaño-Higuera, Víctor M, Rodríguez-Félix, Francisco, Rosas-Burgos, Ema C, Graciano-Verdugo, Abril Z
Format: Article
Language:English
Subjects:
Antiinfectives and antibacterials
Bacteria
Copolymers
Fourier transforms
Gallates
Grafting
Inhibition
Pseudomonas
Staphylococcus aureus
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Summary:The antimicrobial activity of films made of poly(l-lactic acid)/poly(l-lactic acid) grafted maleic anhydride(copolymer)/epigallocatechin gallate(EGCG) blend was determined. The effect of epigallocatechin gallate incorporation (0.03, 0.5, 5, and 10 wt%) as a natural antibacterial was determined by direct contact, solid and liquid culture media. The film antimicrobial activity was evaluated against two bacteria (gram-negative: Pseudomonas spp.; gram-positive: Staphylococcus aureus). The copolymer was prepared and characterized by Fourier transform infrared analysis and Molau test. Furthermore, the degree of grafting was determined. The epigallocatechin gallate migration profile through the films were determined and the minimum epigallocatechin gallate concentration in films required to show antibacterial activity was evaluated. The results showed that only the films with 10 wt% epigallocatechin gallate significantly affected (p 
ISSN:8756-0879
1530-8014
DOI:10.1177/8756087916631602