Show your support of CIRI with the 'CIRI Supporter' logo, available for display on your Web site upon joining CIRI.
Join today and help CIRI advance the cause of cleaner, more productive, and healthier indoor environments through scientific research!
The School Environment
In the United States there are about 120,000 schools providing for the educational needs of approximately 54 million students. On average, students receive about 20% of their environmental exposure in schools.
Dr. Michael A. Berry
By Liyan Song, PhD, Jianfeng Wu, PhD, Chuanwu Xi, PhD
Environmental surfaces in health care settings are often contaminated by microorganisms, and biofilms can develop on the surfaces in these settings. Steam vapor technology is of potential use for disinfection of biofilms on the environmental surfaces.
We tested the disinfection efficacy of a thermal-accelerated nanocrystal sanitation (TANCS)-equipped steam vapor technology against biofilms through disinfecting biofilms developed by 4 bacterial strains—Escherichia coli, Acinetobacter baumannii, Pseudomonas aeruginosa, and Staphylococcus aureus—on an identical test surface (ie, polycarbonate) and biofilms developed by E coli on 4 different test surfaces: polycarbonate, rubber, stainless steel, and ceramics.
Our data show that a 3-second steam treatment rapidly killed each biofilm tested (>99.95 % killing efficiency). For biofilms developed on different surfaces, 3-second steam treatment achieved 99.95% killing of E coli biofilms developed on different surfaces. Compared with chemical disinfection, steam treatment for <1 second [equaled] a similar level of biofilm disinfection as provided by incubation with 10-ppm sodium hypochlorite (bleach) for 10-20 minutes of contact time.
Our data suggest that the TANCS-equipped steam vapor disinfection is an emerging and potentially useful technology for disinfecting biofilms on environmental surfaces.
Liyan Song, PhD
Jianfeng Wu, PhD
Chuanwu Xi, PhD
Department of Environmental Health Sciences, School of Public Health, University of Michigan, Ann Arbor, MI
The Cleaning Industry Research Institute (CIRI) is a 501.c.3 not-for-profit scientific, educational and research organization that applies science to the practice and improvement of cleaning and maintenance.
This abstract/brief is presented under the recognized "fair use" doctrine with respect to article copyright and intellectual property. Readers are encouraged to secure the full article from the originating publication source. Articles also may be obtained through a librarian, an information specialist or inter-library loan. In cases where payment is required under copyright it can be processed through a reference library or the Copyright Clearance Center at www.copyright.com.
CIRI provides no warranty, expressed or implied, and assumes no legal liability for the accuracy, completeness or usefulness of any information disclosed on its site. The views and opinions of authors expressed herein do not necessarily reflect those of CIRI principals, executives, science advisors or affiliates.