Evaluation of Pseudomonas graminis CPA-7 as a biopreservation method for fresh-cut pearPhysicochemical, enzymatic, and nutritional quality

  1. Lorena Zudaire 1
  2. Inmaculada Viñas Almenar
  3. María Belén Iglesias
  4. Lucía Plaza
  5. Maribel Abadias
  6. Ingrid Aguiló-Aguayo
  1. 1 IRTA Institute of Agrifood Research and Technology, Departamento de Agricultura, Ganadería, Pesca y Alimentación, Generalitat de Cataluña,
Revista:
Food science and technology international = Ciencia y tecnología de alimentos internacional

ISSN: 1082-0132,  1532-1738

Año de publicación: 2019

Volumen: 25

Número: 4

Páginas: 271-281

Tipo: Artículo

DIALNET GOOGLE SCHOLAR

Otras publicaciones en: Food science and technology international = Ciencia y tecnología de alimentos internacional

Resumen

Biological preservation methods with bacterial antagonists have emerged as alternatives to chemical sanitizers for extending shelf-life and reducing the population of pathogenic microorganisms. In addition, calcium plays an important role in maintaining the quality of fruit, and postharvest calcium treatments might determine the potential of fruit for processing. The objective of this work was to evaluate the effect of the postharvest application of calcium and biopreservation with the CPA-7 strain of Pseudomonas graminis on the quality parameters of fresh-cut pears. After harvest, whole pears were dipped in calcium chloride solution (1%, w/v) or water (control) for 10 min at 25 ℃ and stored for five months at temperatures ranging from 0 to −0.5 ℃. Both batches of fruit were minimally processed and dipped in a solution containing CPA-7 and an antioxidant solution or kept untreated, and both groups were stored at 4 ℃ for six days. The postharvest calcium treatment had no remarkable effect on the quality of the whole and fresh-cut pears. The enzymatic activities (PPO, PME and PG) related to browning and softening were constant in fresh-cut pears after storage, and the application of P. graminis CPA-7 had a positive effect on the activity of PPO. Finally, a combined effect of the biocontrol agent and calcium treatment was not demonstrated.

€ Ver financiación

Información de financiación

Authors thank the CERCA Program of Generalitat de Catalunya. Dr Aguil?-Aguayo thanks the Ministry of Economy and Competitiveness from the Government of Spain for the ?Ayuda para contratos para la formaci?n postdoctoral' (FPDI-2013-15583). L. Plaza thanks the National Institute for Agronomic Research (INIA) for a DOC-INIA research contract. The authors thank Daniel Mart?n and Silvia Villar? for their technical support.

Financiadores

Fuente de los datos: Dialnet