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Improvement of the physical-chemical, microbiological, volatiles and sensory quality of strawberries covered with chitosan/gelatin/pomegranate peel extract-based coatings

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Author(s):
Bertolo, Mirella Romanelli Vicente ; de Oliveira Filho, Josemar Goncalves ; Lamonica, Giovana Contarelli ; Bezerra, Carmen Cris de Oliveira Nobre ; Martins, Virginia da Conceicao Amaro ; Ferreira, Marcos David ; Plepis, Ana Maria de Guzzi ; Bogusz Junior, Stanislau
Total Authors: 8
Document type: Journal article
Source: Food Chemistry; v. 471, p. 15-pg., 2025-01-06.
Abstract

This study investigated the effects of chitosan/gelatin (CG) coatings containing pomegranate peel extract (PPE) on the physical-chemical, microbiological, volatile profile, and sensory characteristics of strawberries over 12 days of refrigerated storage. The coatings containing PPE minimized the weight loss of the fruits by 11 % and delayed their fungal contamination by 6-8 days. Uncoated fruits showed soluble solids content, pH, and titratable acidity values characteristics of highly deteriorated fruits. The coatings preserved the color, firmness, respiratory quotient, and bioactive compounds contents of the fruits. Uncoated strawberries showed a 39.4 % reduction in total volatile compounds, approximately 6 times greater than coated fruits. The severity of injuries caused by fungi was slowed down by the coatings. The sensory quality of the fruits was not affected, and the coatings cost was estimated at approximately $ 0.03/fruit, confirming that the materials developed can be used as natural coatings and a cheap alternative for strawberries preservation. (AU)

FAPESP's process: 18/24612-9 - Application of nanoemulsions with essential oils as natural coatings for application in post-harvesting strawberry conservation
Grantee:Josemar Gonçalves de Oliveira Filho
Support Opportunities: Scholarships in Brazil - Doctorate
FAPESP's process: 22/03229-8 - Synthesis, characterization and applications of natural deep eutectic solvents (NADES)
Grantee:Stanislau Bogusz Junior
Support Opportunities: Research Grants - Initial Project