Evaluation of Efficacy and Development of Predictive Reduction Models for Escherichia coli and Staphylococcus aureus on Food Contact Surfaces as a Function of Concentration and Contact Time of Chlorine Dioxide

2017 ◽  
Vol 32 (6) ◽  
pp. 507-512
Author(s):  
So-Jeong Yoon ◽  
Shin Young Park ◽  
Yong-Soo Kim ◽  
Sang-Do Ha
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Chlorine Dioxide ◽  
Contact Time ◽  
Food Contact ◽  
Food Contact Surfaces ◽  
Contact Surfaces ◽  
And Staphylococcus Aureus

scholarly journals Effects of oregano essential oil and carvacrol on biofilms of Staphylococcus aureus from food-contact surfaces

Food Control ◽  
2017 ◽  
Vol 73 ◽  
pp. 1237-1246 ◽  
Author(s):  
Jessica Bezerra dos Santos Rodrigues ◽  
Rayssa Julliane de Carvalho ◽  
Neyrijane Targino de Souza ◽  
Kleber de Sousa Oliveira ◽  
Octávio Luiz Franco ◽  
...  
Keyword(s):  
Staphylococcus Aureus ◽  
Essential Oil ◽  
Oregano Essential Oil ◽  
Food Contact ◽  
Food Contact Surfaces ◽  
Contact Surfaces

scholarly journals Evaluating the efficacy of sodium acid sulfate to reduce Escherichia coli O157:H7 and its biofilms on food-contact surfaces

LWT ◽  
2020 ◽  
pp. 110501
Author(s):  
Pabasara Weerarathne ◽  
Josh Payne ◽  
Joyjit Saha ◽  
Tony Kountoupis ◽  
Ravi Jadeja ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Escherichia Coli O157 ◽  
Acid Sulfate ◽  
Food Contact ◽  
Food Contact Surfaces ◽  
Contact Surfaces

scholarly journals Lipolytic activity of Staphylococcus aureus from human wounds, animals, foods, and food-contact surfaces in Brazil

2014 ◽  
Vol 8 (08) ◽  
pp. 1055-1058 ◽  
Author(s):  
Jessica Bezerra Dos Santos Rodrigues ◽  
Taiz Siqueira Pinto ◽  
Cybelle Pereira De Oliveira ◽  
Francisca Inês De Sousa Freitas ◽  
Maria do Socorro Vieira Pereira ◽  
...  
Keyword(s):  
Public Health ◽  
Staphylococcus Aureus ◽  
Lipolytic Activity ◽  
Lipase Production ◽  
Nasal Cavities ◽  
Food Contact ◽  
Food Contact Surfaces ◽  
Contact Surfaces ◽  
Different Sources

Introduction: S. aureus is of great importance to public health due to its pathogenicity. This study aimed to evaluate lipase production by S. aureus isolates from different sources. Methodology: Lipolytic activity was determined using Tween-Calcium agar (48 hours; 35°C). Results: Eighty-six percent of the isolates from human wounds were positive for lipase production. The frequencies of isolates positive for lipase production were 33.3% from cow udders, 15.4% from the nasal cavities of cattle, 82.9% from ricotta cheeses, and 100% and 91.7% from meat- and vegetable-contact surfaces, respectively. Conclusion: The production of lipase varied among the isolates according to their source.

scholarly journals Inactivation Kinetics and Mechanism of a Human Norovirus Surrogate on Stainless Steel Coupons via Chlorine Dioxide Gas

2015 ◽  
Vol 82 (1) ◽  
pp. 116-123 ◽  
Author(s):  
Jia Wei Yeap ◽  
Simran Kaur ◽  
Fangfei Lou ◽  
Erin DiCaprio ◽  
Mark Morgan ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Chlorine Dioxide ◽  
Plaque Assay ◽  
Kinetics And Mechanism ◽  
Inactivation Kinetics ◽  
Human Norovirus ◽  
Effective Measure ◽  
Food Contact ◽  
Food Contact Surfaces ◽  
Contact Surfaces

ABSTRACTAcute gastroenteritis caused by human norovirus is a significant public health issue. Fresh produce and seafood are examples of high-risk foods associated with norovirus outbreaks. Food contact surfaces also have the potential to harbor noroviruses if exposed to fecal contamination, aerosolized vomitus, or infected food handlers. Currently, there is no effective measure to decontaminate norovirus on food contact surfaces. Chlorine dioxide (ClO2) gas is a strong oxidizer and is used as a decontaminating agent in food processing plants. The objective of this study was to determine the kinetics and mechanism of ClO2gas inactivation of a norovirus surrogate, murine norovirus 1 (MNV-1), on stainless steel (SS) coupons. MNV-1 was inoculated on SS coupons at the concentration of 107PFU/coupon. The samples were treated with ClO2gas at 1, 1.5, 2, 2.5, and 4 mg/liter for up to 5 min at 25°C and a relative humidity of 85%, and virus survival was determined by plaque assay. Treatment of the SS coupons with ClO2gas at 2 mg/liter for 5 min and 2.5 mg/liter for 2 min resulted in at least a 3-log reduction in MNV-1, while no infectious virus was recovered at a concentration of 4 mg/liter even within 1 min of treatment. Furthermore, it was found that the mechanism of ClO2gas inactivation included degradation of viral protein, disruption of viral structure, and degradation of viral genomic RNA. In conclusion, treatment with ClO2gas can serve as an effective method to inactivate a human norovirus surrogate on SS contact surfaces.

Sign in / Sign up

Export Citation Format

Share Document