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J Biosci Bioeng. 2014 Aug;118(2):177-82. doi: 10.1016/j.jbiosc.2014.02.005. Epub 2014 Mar 17.

In-package atmospheric pressure cold plasma treatment of cherry tomatoes.

Author information

1
BioPlasma Research Group, School of Food Science and Environmental Health, Dublin Institute of Technology, Cathal Brugha Street, Dublin 1, Ireland.
2
BioPlasma Research Group, School of Food Science and Environmental Health, Dublin Institute of Technology, Cathal Brugha Street, Dublin 1, Ireland; Department of Food Science, Purdue Agriculture, Purdue University, 745 Agriculture Mall Drive, West Lafayette, IN 47907, USA.
3
School of Physical Sciences and National Centre for Plasma Science and Technology, Dublin City University, Glasnevin, Dublin 9, Ireland.
4
BioPlasma Research Group, School of Food Science and Environmental Health, Dublin Institute of Technology, Cathal Brugha Street, Dublin 1, Ireland; School of Chemical Engineering, UNSW Australia, Sydney, NSW 2052, Australia. Electronic address: pjcullen@dit.ie.

Abstract

Cold plasma is increasingly under research for decontamination of foods, especially fresh fruits and vegetables. The effect of cold plasma on food quality, however, remains under researched. This study investigates the effects of cold plasma generated within a sealed package from a dielectric barrier discharge on the physical quality parameters and respiration rates of cherry tomatoes. Respiration rates and weight loss were monitored continuously, while other parameters are reported at the end of storage period. Differences among weight loss, pH and firmness for control and treated cherry tomatoes were insignificant towards the end of storage life. Changes in respiration rates and colour of tomatoes were recorded as a function of treatment, which were not drastic. The results implicate that cold plasma could be employed as a means for decontamination of cherry tomatoes while retaining product quality.

KEYWORDS:

Barrier discharge; Cold plasma; Nonthermal; Quality; Respiration rate; Spectroscopy; Tomato

PMID:
24650730
DOI:
10.1016/j.jbiosc.2014.02.005
[Indexed for MEDLINE]

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