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Open AccessArticle

Poultry Shelf-Life Enhancing Potential of Nanofibers and Nanoparticles Containing Porphyra dioica Extracts

1
MARE – Marine and Environmental Sciences Center, ESTM, Politécnico de Leiria, 2520-641 Peniche, Portugal
2
Centre for Rapid and Sustainable Product Development, Politécnico de Leiria, Zona Industrial, Rua de Portugal, 2430-028 Marinha Grande, Portugal
3
Department of Food and Nutrition, National Institute of Health Dr Ricardo Jorge (INSA), Avenida Padre Cruz, 1649-016 Lisbon, Portugal
4
Center for Study in Animal Science (CECA), ICETA, University of Oporto, 4051-401 Oporto, Portugal
5
National Institute for Agricultural and Veterinary Research (INIAV), 4485-655 Vairão, Vila do Conde, Portugal
*
Author to whom correspondence should be addressed.
Coatings 2020, 10(4), 315; https://doi.org/10.3390/coatings10040315
Received: 28 February 2020 / Revised: 17 March 2020 / Accepted: 24 March 2020 / Published: 26 March 2020
(This article belongs to the Special Issue Novel Advances in Food Contact Materials)
Aqueous extracts of commercially available red macroalgae Porphyra dioica were integrated as inner coatings of food-grade polypropylene (PP) films through use of electrospinning and electrospraying technologies. Two coating formulations (A = 5 wt% P. dioica extract and 7.5 wt% polyvinyl alcohol (PVA); B = 1 wt% P. dioica extract, 1 wt% PVA, and 17% gelatine) were evaluated as to their capacity to delay spoilage of minced chicken breasts, through monitoring of microbial growth (total mesophile aerobic colony counts), colour stability, lipid oxidation (thiobarbituric acid reactive substances (TBARS)), and sensory analysis over a 4-day refrigerated storage. Scanning electron microscopy (SEM) imaging revealed an increased nanofiber and nanoparticle density on extract-enriched fibers, without compromise to their morphology or the homogeneity of the coatings. Total microbial counts on coating B samples was significantly (p < 0.001) reduced compared to uncoated plastic wraps. The coated samples also exhibited fewer colour degradation, though the coatings did not differ substantially from uncoated plastic wrap. Sensory analysis test subjects successfully distinguished the raw samples based on their treatment and gave a positive approval rating (66.7%) to the extract-enriched coatings when asked about edibility post storage. View Full-Text
Keywords: electrospinning; electrospraying; porphyra dioica; active packaging; shelf-life electrospinning; electrospraying; porphyra dioica; active packaging; shelf-life
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Reboleira, J.; Adão, P.; Guerreiro, S.F.C.; Dias, J.R.; Ganhão, R.; Mendes, S.; Andrade, M.; Vilarinho, F.; Sanches-Silva, A.; Mateus, A.; Alves, N.; Bernardino, S. Poultry Shelf-Life Enhancing Potential of Nanofibers and Nanoparticles Containing Porphyra dioica Extracts. Coatings 2020, 10, 315.

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