Mycobacterium tuberculosis has enjoyed the distinction, among the nonspore bearing organisms, of being one of the most resistant to chemical disinfection. Quaternary ammonium compounds, widely used as effective germicides against gram positive organisms, have generally proved to be without effect on the tubercle bacillus (Lawrence and Grover, 1951; Smith et al., 1950). Recently, it has been rep...

The solar UV radiation coming from the sun is considered as main source of microbial germicide and environmental sterilization. objective this study to estimate dose amount time required inactivate coronaviruses by exposure. published trials on 254-nm inactivation under ultraviolet light exposure families equivalent microbe in terms D90 (ultraviolet for 90% inactivation), or any other or/and ge...

Due to the COVID19 pandemic, solutions automate disinfection using UV-C combined with mobile robots are beginning be explored. It has been proved that use of these systems highly reduces risk contagion. However, its in real applications is not being as rapid it needs be. One main market input barriers fear degrading facilities. For this reason, crucial perform a detailed study on degradation ef...

Glycerin has been employed for a number of years for the conservation of vaccine virus t and other materials of similar nature, e. g., the virus of rabies, clavele, rinderpest, and foot and mouth disease. Its preservative properties for animal and vegetable tissues are also well recognized. It has, however, been employed more as a diluent, particularly in the case of bovine virus, than because ...

1. Sandora TJ, Taveras EM, Shih M-C, Resnick EA, Lee GM, Ross-Degnan D, et al. Hand sanitizer reduces illness transmission in the home [abstract 106]. In: Abstracts of the 42nd annual meeting of the Infectious Disease Society of America; Boston, Massachusetts; 2004 Sept 30–Oct 3. Alexandria (VA): Infectious Disease Society of America; 2004. 2. Hammond B, Ali Y, Fendler E, Dolan M, Donovan S. Ef...

The subject of reusing single-use devices (SUDs) is one that has been discussed, debated, dissected, promoted, and damned seemingly forever. I have been attending conferences and professional and scientific meetings that discussed the pros and cons of reusing SUDs for more than 25 years and, until recently, it was the same story. Those who favored, and indeed practiced, reusing SUDs pointed out...

Clean food 161 on ‘clean’ glasses. Whisky and wine glasses were found to be less contaminated, Beer and overflow beer were also examined with results which were not entirely satisfactory. Undiluted overspill beer languishing in its tray until it can be dealt with may contain washings off the bar tenders’ fingers and will not improve any fresh beer with which it is eventually mixed. Coliforms we...

BACKGROUND To prevent cross-infection of patients, semicritical devices must be high-level disinfected by a product capable of destroying mycobacteria. Glutaraldehyde is commonly used; however, recent studies showed that glutaraldehyde-resistant mycobacteria could survive treatment with this chemical for extended exposure times. Our study tested hydrogen peroxide, peracetic acid, and a germicid...

In this study, the relationship among four species of Polygonum (including P. hyrcanicum (three samples), P. persicaria, P. avicular, and P. hydropiper) was investigated by GC profiling. Furthermore, the major compounds of the ethylic ether extract of P. hyrcanicum were identified by GC/MS as: α-bisabolol (17.5%), cedrol (15.9%), sesquisabinene hydra...