Search results
Results from the WOW.Com Content Network
The curve for E. coli is given in the figure, with the most effective UV light having a wavelength of 265 nm. This applies to most bacteria and does not change significantly for other microbes. Dosages for a 90% kill rate of most bacteria and viruses range between 2,000 and 8,000 μJ/cm 2 .
The T2 phage can quickly turn an E. coli cell into a T2-producing factory that releases phages when the cell ruptures. Experiments conducted in 1952 by Alfred Hershey and Martha Chase demonstrated how the DNA of viruses is injected into the bacterial cells, while most of the viral proteins remain outside.
Microwave volumetric heating (MVH) overcomes the uneven absorption by applying an intense, uniform microwave field. Different compounds convert microwave radiation to heat by different amounts. This selectivity allows some parts of the object being heated to heat more quickly or more slowly than others (particularly the reaction vessel).
A day after an E. coli outbreak tied to Quarter Pounders in the western part of the United States left one dead and 10 hospitalized, McDonald’s entered full damage-control mode.
Kill greater than 99.9% of bacteria within two hours, and continue to kill 99% of bacteria even after repeated contamination; Help inhibit the buildup and growth of bacteria within two hours of exposure between routine cleaning and sanitizing steps. See: Antimicrobial copper touch surfaces for the main article.
These disinfectants kill germs too, according to an expert. Nonetheless, if you can’t find Lysol at the store, Wuest said that most other antibacterial and antiseptic wipes contain the same mix ...
The choice of disinfectant to be used depends on the particular situation. Some disinfectants have a wide spectrum (kill many different types of microorganisms), while others kill a smaller range of disease-causing organisms but are preferred for other properties (they may be non-corrosive, non-toxic, or inexpensive). [17]
More information on the recalled carrots can be found on the FDA’s website. Any questions and concerns can also be directed to the FDA’s customer service desk at 1 (800) 301-3101.