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Increasing the Safety and Storage of Pre-Packed Fresh-Cut Fruits and Vegetables by Supercritical CO2 Process

Zambon, Alessandro; González-Alonso, Víctor; Lomolino, Giovanna; Zulli, Riccardo; Rajkovic, Andreja and Spilimbergo, Sara (2022) Increasing the Safety and Storage of Pre-Packed Fresh-Cut Fruits and Vegetables by Supercritical CO2 Process. Foods, 12 (1), p. 21.

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Document available online at: https://www.mdpi.com/2304-8158/12/1/21


Summary

This work presents a feasibility lab-scale study for a new preservation method to inactivate microorganisms and increase the shelf life of pre-packed fresh-cut products. Experiments were conducted on coriander leaves and fresh-cut carrots and coconut. The technology used the combination of hydrostatic pressure (<15 MPa), low temperature (≤45 °C), and CO2 modified atmosphere packaging (MAP). The inactivation was achieved for the naturally present microorganisms (total mesophilic bacteria, yeasts and molds, total coliforms) and inoculated E. coli. Yeasts and molds and coliform were under the detection limit in all the treated samples, while mesophiles were strongly reduced, but below the detection limit only in carrots. Inoculated E. coli strains were completely inactivated (>6.0 log CFU/g) on coconut, while a reduction >4.0 log CFU/g was achieved for carrots and coriander. For all the treated products, the texture was similar to the fresh ones, while a small alteration of color was detected. Microbiological stability was achieved for up to 14 days for both fresh-cut carrots and coconut. Overall, the results are promising for the development of a new mild and innovative food preservation technique for fresh food.


EPrint Type:Journal paper
Agrovoc keywords:
Language
Value
URI
English
modified atmosphere packaging
http://aims.fao.org/aos/agrovoc/c_10af9bb2
English
carbon dioxide
http://aims.fao.org/aos/agrovoc/c_1302
English
high pressure technology
http://aims.fao.org/aos/agrovoc/c_36742
Subjects: Food systems > Food security, food quality and human health
Food systems > Processing, packaging and transportation
Research affiliation: European Union > CORE Organic > CORE Organic Cofund > Joint call with SUSFOOD2 – 2019 > HO-FOOD
Horizon Europe or H2020 Grant Agreement Number:727495
ISSN:2304-8158
DOI:10.3390/foods12010021
Deposited By: Zulli, Eng. Riccardo
ID Code:45145
Deposited On:10 Jan 2023 09:42
Last Modified:10 Jan 2023 09:42
Document Language:English
Status:Published
Refereed:Peer-reviewed and accepted

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