Effect of modified atmosphere packaging (MAP) and UC-C irradiation on postharvest quality of red raspberries

Gimeno, D. ; Gonzalez-Buesa, J. ; Oria, R. (Universidad de Zaragoza) ; Venturini, M. E. (Universidad de Zaragoza) ; Arias, E. (Universidad de Zaragoza)

Resumen: Red raspberries (Rubus idaeus L.) are highly appreciated by consumers. However, their postharvest shelf life scarcely exceeds 5 d under the refrigeration temperatures usually applied during commercialization, due to their high susceptibility to dehydration, softening and rot incidence. Thus, the objective of this study was to investigate the ability of UV-C radiation (UV1: 2 kJ m-2 and UV2: 4 kJ m-2 ), passive modified atmosphere packaging (MAP) with transmission rates (TR) for O2 and CO2 of 1805 mL d-1 and 1570 mL d-1 (MAP1), and 902 mL d-1 and 785 mL d-1 (MAP2), respectively, and the combination of both technologies to prolong raspberries’ shelf life at 6¿ C. Their influence on respiration, physicochemical parameters, and microbiological and nutritional quality was assessed during 12 d of storage. The combination of 4 kJ m-2 UV-C radiation and a packaging film with O2 and CO2 transmission rates of 902 mL d-1 and 785 mL d-1, respectively, produced a synergistic effect against rot development, delaying senescence of the fruit. The UV2MAP2 and MAP2 samples only showed 1.66% rot incidence after 8 d of storage. The UV2MAP2 samples also had higher bioactive content (1.76 g kg-1 of gallic acid equivalents (GAE), 1.08 g kg-1 of catechin equivalents (CE) and 0.32 g kg-1 of cyanidin 3-O-glucoside equivalents (CGE)) than the control samples at the end of their shelf life. Moreover, the mass loss was minimal (0.56%), and fruit color and firmness were maintained during shelf life. However, the rest of the batches were not suitable for commercialization after 4 d due to excessive mold development. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.

Idioma: Inglés

DOI: 10.3390/agriculture12010029

Año: 2022

Publicado en: Agriculture (Basel) 12, 1 (2022), 29 [18 pp]
ISSN: 2077-0472

Factor impacto JCR: 3.6 (2022)

Categ. JCR: AGRONOMY rank: 17 / 88 = 0.193 (2022) - Q1 - T1

Factor impacto CITESCORE: 3.6 - Agricultural and Biological Sciences (Q2)

Factor impacto SCIMAGO: 0.561 - Agronomy and Crop Science (Q2) - Plant Science (Q2) - Food Science (Q2)

Financiación: info:eu-repo/grantAgreement/ES/DGA/A22-20R

Tipo y forma: Artículo (Versión definitiva)

Área (Departamento): Área Tecnología de Alimentos (Dpto. Produc.Animal Cienc.Ali.)