Luria–Bertani broth (LB) culture medium is a commonly used bacterial in the laboratory. The nutrient composition, concentration, and conditions of LB can influence growth microbial strains. purpose this article to demonstrate impact liquid on under different sterilization conditions. In study, with four treatments was used, as follows: A, without treatments; B, filtration; C, autoclaving; D, au...

Optical fibers with different types of polymer coatings were exposed to three sterilization conditions: multiple autoclaving, treatment with ethylene oxide and treatment with gamma rays. Effects of different sterilization techniques on key optical and mechanical properties of the fibers are reported. The primary attention is given to behavior of the coatings in harsh sterilization environments....

The effect of chemical disinfection of the Heidbrink expiratory valve in buffered glutaraldehyde (Cidex solution) was investigated. Cidex caused stickiness and increased the opening pressure and resistance of the valve to different gas flow rates. An electrolytic type of corrosion may also have occurred. However, autoclaving of the Heidbrink valve did not appear to cause corrosion or significan...

Background: Skin eruption is a disease that it is because of skin necrosis and adolescence and youth depression. The some species of Staphylococcuss are agent of this disease. There isn’t effective drug for curing of this disease. Many of medicinal plants (e.x. Stachys inflata Benth.) have anti- bacterial compounds and they can be used as a drug to cure skin eruption disease. Objective: This r...

introduction: selected probiotic lactobacilli have inhibitory effect and therefore may be use as biological preservative, so, the aim of this study was to present some data on isolation, growth, antimicrobial activity, effect of ph, heat, and sensitivity to proteolytic enzymes of lactobacillus. material and methods: isolation of lactic acid bacteria from sausage was done by using 1g of samples ...

THE MICROBIOLOGIC PROCEDURE of Guthrie and Susi (1) is probably the most widely used screening technic for detecting phenylketonuria. The method of McCaman and Robins (2) and its modifications by Wong et al. (3) and Hsia et at. (4), as well as that of La Du and Michael (5) are the chemical procedures generally used as confirmatory tests. Hill et at. (6) have adapted the McCaman procedure to the...