نتایج جستجو برای: incubation of microorganisms
تعداد نتایج: 21166192 فیلتر نتایج به سال:
Hydrolyzable microplastics in soil—low biodegradation but formation of a specific microbial habitat?
Abstract Microplastics (MP, plastic particles between 0.1 and 5000 ?m) contaminate agricultural soils through the application of organic fertilizers, sewage sludge, mulch. MP surfaces MP-soil interface provide specific habitats for soil microorganisms—the plastisphere. Microorganisms in plastisphere may benefit from utilizing as a carbon (C) source. Hydrolyzable with ester bonds are susceptible...
Forty-eight combinations of enrichment media, secondary enrichment, incubation times and temperatures, and atmospheres were examined for their efficacy in recovering different serovars of Salmonella that had been inoculated into ground-meat extract. Variations included three selective-enrichment media, two (37 and 43 degrees C) incubation temperatures, two (24 and 48 h) incubation times, two (a...
Novel Enzymatic from D - ArabitolMethod for the Production of by Gltzconobacter oxydans Xylitol JSsu
Microorganisms capable of producing xy]itol from Darabitol were screened for. Of the 420 strains tested, three bacteria, belonging to the genera Acetobacter and Gluconobacter, produced xylitol from D-arabitol when intact cells were used as the enzyme source. Among them, Gluconobacter oxydans ATCC 621 produced 29.2 g!1 xylitol from 52.4 g!1 D-arabitol after incubation for 27 h. The production of...
Aim: To compare the antimicrobial capacity of Chlorine Dioxide (ClO2), Sodium Hypochlorite (NaOCl) and Chlorhexidine (CHX) in microorganisms isolated from persistent apical periodontitis ATCC strains. Materials methods: The included were analyzed by Minimum Inhibitory Concentration (MIC): 50 µl saline solution 100 0.25%, 1% 2% used to make following dilutions 1:2, 1:4, 1:8, 1:16, 1:32, 1:64, 1:...
Sewage sludge digestate is a valuable organic waste which can be used as fertilizer in soil bioremediation. not only good source of nutrients but also rich bacteria carrying alkB genes, are involved aliphatic hydrocarbons metabolism. Increase genes ratio polluted soils has been observed to improve bioremediation efficiency. In this study, for the first time, genetic potential indigenous microor...
Microorganisms can easily degrade agro-industrial wastes in a solid-state fermentation process thereby synthesizing many important commercial bio compounds including lipolytic enzymes. Screening different habitats for bacteria with lipase activity and optimizing its parameters facilities effective production usage industries. In this study, soil samples from Abattoirs Kaduna metropolis were scr...
poly aromatic hydrocarbons are hydrophobic organic compound found as major contaminants in soil. soil biological activities are vital for the restoration of soil contaminated with hydrocarbons. successful application of bioremediation technology to contaminated soil requires knowledge of the characteristics of the site and the parameters that affect the microbial biodegradation of pollutants. t...
Measurements of carbon dioxide (CO2)-evolution from soils are important in evaluating biomass and activity of soil microorganisms, as well as decomposition of soil organic matter. The Respicond VI is a fully computerized system allowing continuous measurement of CO2 evolution in shortand long-term soil incubation experiments in up to 96 incubation vessels. The measurement of CO2 evolution is ba...
Accurate diagnosis of orthopedic device-associated infections can be challenging. Culture of tissue biopsy specimens is often considered the gold standard; however, there is currently no consensus on the ideal incubation time for specimens. The aim of our study was to assess the yield of a 14-day incubation protocol for tissue biopsy specimens from revision surgery (joint replacements and inter...
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