Sixty-two antimicrobial agents, including several combinations, were examined for stability at 56 degrees C for 30 min and 121 degrees C for 15 min, respectively. A microtiter broth dilution MIC test and an agar disk diffusion test served to test each chemo-agent for residual antimicrobial activity. Eleven drugs were partially heat-labile (MICs raised four- to eight-fold after autoclaving) and ...

OBJECTIVE The purpose of this study was to evaluate and compare the rate of bacterial contamination of reused and new unused burs after different sterilization sessions. MATERIALS AND METHODS The test group consisted of 40 used fissure burs, and the control group of 40 unused new fissure burs (total n = 80). The burs from both groups were precleaned according to standard protocols and then su...

We discovered that Yeast Extract Mannitol (YEM) medium possessed immense potential to generate silver nanoparticles from AgNO3 upon autoclaving, which was evident from (i) alteration in color of the medium; (ii) peak at ∼410 nm in UV-Vis spectrum due to surface plasmon resonance specific to silver nanoparticles; and (iii) TEM investigations. TEM coupled with EDX confirmed that distinct nanopart...

This study investigated the effects of wheat bran pre-treatments by autoclaving, roasting, jet cooking, extrusion, puffing and high-temperature-high-pressure (HTHP) cooking on properties whole meal (WWM) sensory attributes Chinese steamed bread (CSB) pancakes prepared from blends refined flours brans. All imparted negative influences gluten index WWMs compared to untreated bran. Pre-hydration i...

PURPOSE To determine the effect of multiple autoclave sterilization cycles on the integrity of titanium plates and screws used in craniofacial reconstruction. MATERIALS AND METHODS Torque to fracture was evaluated for 36 titanium 6AL-4V (Ti 6/4) screws divided evenly into 3 groups and tested as machined (control), after 10 cycles of autoclaving or after 50 cycles of autoclaving. Sterilization...

Short indicator RNA sequences (<100 bp) persist after autoclaving and are recovered intact by molecular amplification. Primers targeting longer sequences are most likely to produce false positives due to amplification errors easily verified by melting curves analyses. If short indicator RNA sequences are used for virus identification and quantification then post autoclave RNA degradation method...

A study was undertaken to determine why bacteria could penetrate lengths of consolidated sandstone (Berea) faster when the sandstone was sterilized by autoclaving than when dry heat (150 degrees C, 3 h) was used. Changes in permeability, porosity, and pore entrance size of the rock as a result of autoclaving were not sufficient to explain the differences in penetration times observed, but elect...

comparative effects of extrusion cooking and conventional processing methods (cooking and autoclaving) on anti-nutritional factors and subsequent effects on in vitro and in vivo digestibility of vicia ervilia in broilers were investigated. treatments had significant effect (p

In the present study, the effect of various processing methods like soaking, autoclaving, storage and pullulanase treatment on resistant starch content and in vitro starch digestibility of dhals (split pulses) of pulses pigeon pea, green gram and black gram was assessed. Results showed that these processing methods including pullulanase treatment significantly decreased the resistant starch (RS...

The effects of high-temperature sterilization methods (boiling, dry-heating, autoclaving and chemiclaving) on the properties of four types of stone cast were determined. SEM observations were made of the cast surface before and after sterilization. High-temperature sterilization affected the properties of the stone casts. Boiling, dry-heating and autoclaving were considered to be unacceptable m...