Disinfection effectiveness of slightly acidic electrolysed water in swine barns

Abstract

Aims: To evaluate the disinfection effectiveness of slightly acidic electrolysed water (SAEW, pH 6Á25-6Á53), a new environmental friendly agent for inactivating micro-organisms adhered to the facility and aerosolized in the air of the swine barns and to explore the application of SAEW in livestock industries. Methods and Results: Bacteria and fungi were isolated from the swine house air and treated by SAEW. The SAEW solution was flushed onto surfaces and sprayed within the whole swine barn. SAEW with an available chlorine concentration (ACC) of 300 mg l À1 can inhibit isolated microbes completely.The usage of SAEW (300 mg l À1 ) resulted in a significant (P < 0Á05) reduction in microbes on the wall, rail and floor after flushing disinfection. Additionally, spraying SAEW at an ACC of 300 mg l À1 reduced 59% of the airborne organisms in 30 min and kept the population of microbes at a reduced level for at least 8 h. SAEW treatment also reduced pathogens on surfaces (P < 0Á03) after spraying disinfection except on the surface of the wall. Conclusions: SAEW may be a potential alternative disinfectant to reduce infections in swine barns. Significance and Impact of the Study: The results of this study provide information on the antimicrobial efficiency of SAEW on the airborne bacteria and fungi in swine barns.

Electrolyzed Water as a Novel Sanitizer in the Food Industry: Current Trends and Future Perspectives

“…and E. coli by 21% and 16%, respectively. Hao and others () also reported on the potential applications of SAEW in swine barns. SAEW containing 300 ppm of active chlorine was flushed onto surfaces and sprayed within the whole swine barn.…”

Stability of Weakly Acidic Hypochlorous Acid Solution with Microbicidal Activity

“…The microbicidal effect of HOCl solution has been well studied Kim et al, 2008, Hao et al, 2013 . This reagent has broad-spectrum microbicidal activity.…”

Electrolyzed Water Generated Using a Circulating Reactor

“…To date, different sanitizers like hypochlorites, organic acids, and ozone [5,6] have been employed to disinfect fresh produce. Electrolyzed water produced by the electrolysis of a dilute salt (NaCl) or hydrogen chloride (HCl) solution has been reported to exhibit a broad spectrum of antimicrobial activity [7,8]. Slightly acidic electrolyzed water (pH of 5.0-6.5) is regarded as one of the most promising sanitizers as it is generally recognized as safe (GRAS).…”

“…Recently, several studies have been reported for using high concentrations of slightly acidic electrolyzed water [7,11]. However, limited scientific studies have been involved in process development and understand the properties of electrolyzed water at different conditions.…”