folded bandage102919 significantly different for folded and for rolled bandages (long, p < 0.001 and short p <0.01). Discussion. This study has confirmed that Esmarch bandages, whether tightly rolled or loosely folded, may not be properly sterilised by normal autoclaving and that there is a significant difference between the rolled and folded group. The causeoffailure is probably the thermal in...

The polysaccharide from cell walls of coagulase-positive staphylococci coated both latex particles and tanned red cells for agglutination by human sera and by specific staphylococcal antisera. Treatment with trypsin or autoclaving destroyed the capacity of polysaccharide to coat particles but did not affect precipitation of antibody. Periodic acid destroyed both properties. The teichoic acid po...

The growth of Neisseria gonorrhoeae on brain heart infusion blood agar in which the base was sterilized by filtration has been compared with growth on the same medium sterilized by heat. Colonies were larger on the unheated medium, and autoclaving at 115 degrees C of 121 degrees C for 15 minutes was accompanied by a progressive decrease in colony size. Viable counts on the three media showed no...

BACKGROUND About half of the orthodontists recycle and reuse orthodontic wires because of their costs. So when talking about reuse and sterilization of wires, their effects on mechanical properties of wires should be clarified. The purpose of this study was to assess the effects of sterilization and clinical use on mechanical properties of stainless steel wires. MATERIALS AND METHODS Thirty s...

Pretreatments of low-solids potato process effluent were tested for their potential to increase surfactin yield. Pretreatments included heat, removal of starch particulates, and acid hydrolysis. Elimination of contaminating vegetative cells was necessary for surfactin production. After autoclaving, 0.40 g/L of surfactin was produced from the effluent in 72 h, vs 0.24 g/L in the purified potato ...