4.4 Article

Effect of Plasma-Activated Water on Shewanella putrefaciens Population Growth and Quality of Yellow River Carp (Cyprinus carpio) Fillets

Journal

JOURNAL OF FOOD PROTECTION
Volume 84, Issue 10, Pages 1722-1728

Publisher

INT ASSOC FOOD PROTECTION
DOI: 10.4315/JFP-21-031

Keywords

Inactivation; Plasma-activated water; Quality attributes; Shewanella putrefaciens; Yellow River carp

Funding

  1. National Natural Science Foundation of China [31701672]
  2. Major Special Project on Public Welfare of Henan Province [201300110100]
  3. Key Science and Technology Project of Henan Province [192102110106]
  4. National Natural Science Foundation of Henan Province [202300410497]

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The study shows that plasma-activated water can effectively inactivate Shewanella putrefaciens, improve the color brightness of Yellow River carp fillets, maintain their texture attributes, but it may increase lipid oxidation levels and decrease pH values.
Plasma-activated water (PAW) is a new sanitizer that has received considerable attention for application in food industries. This research aimed to evaluate the effect of PAW on the inactivation of Shewanella putrefaciens and quality attributes of Yellow River carp (Cyprinus carpio) fillets. The carp fillet samples were immersed in sterile deionized water (SDW) or SDW activated by plasma discharge for 120 s (PAW120) for 1.5, 3.0, 4.5, or 6.0 min. After being treated by PAW120 for 6 min, the population of S. putrefaciens on carp fillets was significantly (P < 0.05) decreased by 1.03 log CFU/g. Compared with SDW-treated samples, the L* value of PAW120-treated carp fillets was increased and the a* value was decreased after PAW120 treatment, whereas there was no significant (P > 0.05) difference in the b* value. Compared with SDW, PAW120 caused no significant (P > 0.05) changes in sensory properties and texture attributes of carp fillets including hardness, springiness, gumminess, and cohesiveness. However, 6-min PAW120 treatment caused a significant increase in the lipid oxidation level and a decrease in the pH value of the carp fillets. This work provides a basis for the potential application of PAW in the preservation of aquatic products.

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