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J Food Sci


Title:Microbial Decontamination of Dried Alaska Pollock Shreds Using Corona Discharge Plasma Jet: Effects on Physicochemical and Sensory Characteristics
Author(s):Choi S; Puligundla P; Mok C;
Address:"Dept. of Food Science & Biotechnology, Gachon Univ, Seongnam, 461-701, Korea"
Journal Title:J Food Sci
Year:2016
Volume:20160308
Issue:4
Page Number:M952 - M957
DOI: 10.1111/1750-3841.13261
ISSN/ISBN:1750-3841 (Electronic) 0022-1147 (Linking)
Abstract:"Nonthermal techniques for microbial decontamination are becoming more common for ensuring food safety. In this study, a corona discharge plasma jet (CDPJ) was used for inactivation of microbial contaminants of dried Alaska pollock shreds. Corona plasma jet was generated at a current strength of 1.5 A, and a span length of 25 mm was maintained between the electrode tip and the sample. Upon the CDPJ treatment (0 to 3 min) of dried shreds, microbial contaminants namely aerobic and marine bacteria, and Staphylococcus aureus were inactivated by 2.5, 1.5, and >1.0 log units, respectively. Also, a one-log reduction of molds and yeasts contaminants was observed. The inactivation patterns are fitted well to the pseudo-first-order kinetics or Singh-Heldman model. The CDPJ treatment did not exert statistically significant (P > 0.05) changes in physicochemical properties, namely color characteristics, volatile basic nitrogen, and peroxide value of dried fish shreds, with some exceptions, as compared to untreated controls. Furthermore, CDPJ treatment had no significant impact on the sensory characteristics of dried fish shreds"
Keywords:Alaska Animals Bacteria/*growth & development Color Decontamination/*methods Food Handling/*methods *Food Microbiology Fungi/*growth & development *Gadiformes Humans Lipid Peroxidation Seafood/*analysis/microbiology Staphylococcus aureus/growth & developm;
Notes:"MedlineChoi, Soee Puligundla, Pradeep Mok, Chulkyoon eng Research Support, Non-U.S. Gov't 2016/03/10 J Food Sci. 2016 Apr; 81(4):M952-7. doi: 10.1111/1750-3841.13261. Epub 2016 Mar 8"

 
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