Inactivation of Salmonella Typhimurium and Escherichia coli O157:H7 on black pepper powder using UV-C, UV-A and TiO2 coating

다국어 초록 (Multilingual Abstract)

This study was conducted to measure the inactivation characteristics of UVs and TiO2 against Salmonella.
Typhimurium and Escherichia coli O157:H7 on black pepper powder. The sample was irradiated by UV-A and UV-C combined with TiO2 coating. After treatment, microbial and physicochemical analysis was carried out.
Among various sterilization conditions, the largest number of pathogen in black pepper powder was inactivated by UV-A and UV-C combined with TiO2 coating. The microbial count of black pepper powder treated simultaneously with UV-A and UV-C was less than that of black pepper powder treated with alone. The inactivation effect of UV-A and UV-C was increased when TiO2 coating was combined. Moisture content was decreased with increasing treatment time, but color did not change. In this study, it was indicated that the combined treatment of UV-C, UV-A and TiO2 coating was effective for reducing S. Typhimurium and E. coli O157:H7 on black pepper powder.

참고문헌 (Reference)

1 Gaya´n E, "UV-C inactivation of Escherichia coli at different temperatures" 12 : 531-541, 2011

2 Ojha KS, "Technological advances for enhancing quality and safety of fermented meat products" 44 : 105-116, 2015

3 Lee S-Y, "Suitability of overlay method for recovery of heat-injured Listeria monocytogenes and Salmonella Typhimurium" 10 : 323-326, 2001

4 Oppezzo OJ, "Sublethal effects of ultraviolet A radiation on Enterobacter cloacae" 62 : 158-165, 2001

5 Zweifel C, "Spices and herbs as source of Salmonellarelated foodborne diseases" 45 : 765-769, 2012

6 Julian E, "Salmonella Montevideo infections associated with salami products made with contaminated imported black and red pepper-United States, July 2009-April 2010" 59 : 1647-1650, 2010

7 Alrousan DM, "Photocatalytic inactivation of E. coli in surface water using immobilised nanoparticle TiO2 films" 43 : 47-54, 2009

8 Foster HA, "Photocatalytic disinfection using titanium dioxide : spectrum and mechanism of antimicrobial activity" 90 : 1847-1868, 2011

9 De Boer E, "Microbiology of spices and herbs" 51 : 435-438, 1985

10 McKee L, "Microbial contamination of spices and herbs : a review" 28 : 1-11, 1995

11 Peter K, "Handbook of herbs and spices" Woodhead publishing 568-, 2006

12 Ishibashi KI, "Generation and deactivation processes of superoxide formed on TiO2 film illuminated by very weak UV light in air or water" 104 : 4934-4938, 2000

13 Islam M, "Fate of Salmonella enterica serovar Typhimurium on carrots and radishes grown in fields treated with contaminated manure composts or irrigation water" 70 : 2497-2502, 2004

14 Bintsis T, "Existing and potential applications of ultraviolet light in the food industry–a critical review" 80 : 637-645, 2000

15 Tarr PI, "Escherichia coli O157 : H7 : clinical, diagnostic, and epidemiological aspects of human infection" 20 : 1-8, 1995

16 Knorr D, "Emerging technologies in food processing" 2 : 203-235, 2011

17 Chevremont AC, "Effect of coupled UV-A and UV-C LEDs on both microbiological and chemical pollution of urban wastewaters" 426 : 304-310, 2012

18 Yemmireddy VK, "Effect of binder on the physical stability and bactericidal property of titanium dioxide(TiO2)nanocoatings on food contact surfaces" 57 : 82-88, 2015

19 Chawengkijwanich C, "Development of TiO2 powdercoated food packaging film and its ability to inactivate Escherichia coli in vitro and in actual tests" 123 : 288-292, 2008

20 Maness PC, "Bactericidal activity of photocatalytic TiO2 reaction : toward an understanding of its killing mechanism" 65 : 4094-4098, 1999

21 Blake DM, "Application of the photocatalytic chemistry of titanium dioxide to disinfection and the killing of cancer cells" 28 : 1-50, 1999

22 Besser RE, "An outbreak of diarrhea and hemolytic uremic syndrome from Escherichia coli O157 : H7 in fresh-pressed apple cider" 269 : 2217-2220, 1993

23 Alley M, "An epidemic of salmonellosis caused by Salmonella Typhimurium DT160 in wild birds and humans in New Zealand" 50 : 170-176, 2002

24 Kang DH, "Agar underlay method for recovery of sublethally heat-injured bacteria" 65 : 5334-5337, 1999

25 Guerrero Beltr n J, "Advantages and limitations on processing foods by UV light" 10 : 137-147, 2004

26 Ukuku DO, "A combined treatment of UV-light and radio frequency electric field for the inactivation of Escherichia coli K-12 in apple juice" 138 : 50-55, 2010