NDLI: Corona discharge plasma jet for inactivation of Escherichia coli O157:H7 and Listeria monocytogenes on inoculated pork and its impact on meat quality attributes

Content Provider	Springer Nature Link
Author	Choi, Soee Puligundla, Pradeep Mok, Chulkyoon
Copyright Year	2015
Abstract	Corona discharge plasma jet (CDPJ) was used for inactivation of Escherichia coli O157:H7 and Listeria monocytogenes inoculated experimentally onto the surfaces of fresh and frozen pork. CDPJ was generated with an output voltage of 20 kV direct current and a frequency of 58 kHz. Optimal inactivation was found with plasma created at a current of 1.5 A, and at a span length of 25 mm between the plasma electrode tip and the sample. Following CDPJ treatment (0–120 s) of pork samples, reductions in E. coli O157:H7 and L. monocytogenes were 1.5 log and >1.0 log units, respectively. The inactivation pattern fitted well to the Singh-Heldman model or pseudo-first-order kinetics. Compared to untreated pork, with the exception of color and appearance, no statistically significant (P > 0.05) changes were observed in volatile basic nitrogen, peroxide value, or 2-thiobarbituric acid reactive substances of CDPJ-treated pork. Furthermore, CDPJ treatment had no significant impact on the sensory characteristics of frozen pork although there was some effect on unfrozen pork.
Starting Page	685
Ending Page	694
Page Count	10
File Format	PDF
ISSN	15904261
Journal	Annals of Microbiology
Volume Number	66
Issue Number	2
e-ISSN	18692044
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2015-09-28
Publisher Place	Berlin, Heidelberg
Access Restriction	Subscribed
Subject Keyword	Corona discharge plasma jet Microbial inactivation Pork Kinetic modeling Physicochemical property Sensory evaluation Microbiology Microbial Genetics and Genomics Microbial Ecology Mycology Medical Microbiology Applied Microbiology
Content Type	Text
Resource Type	Article
Subject	Applied Microbiology and Biotechnology

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