• In order to grow successfully, microorganisms must have a supply of water as well as numerous other substances including mineral elements, growth factors, and gas, such as oxygen. (cliffsnotes.com)
  • The effects that low incubation temperatures have on the growth and activity of foodborne microorganisms, five have received the most attention and are outlined below. (ntmy.org)
  • As the temperature rises the mesophilic microbes give way to a different group of microorganisms known as thermophiles that thrive at high temperatures. (gardeningwithangus.com.au)
  • Although autotrophic growth has been suggested [ 4 ], it is commonly assumed that bottled water microorganisms mainly generate energy and multiply through heterotrophic utilization of dissolved organic matter (DOM) available in the bottle environment [ 8 ]. (biomedcentral.com)
  • Their maximum growth is at 37 °C, which proves a link with the warm-blooded organisms and their possible pathogens and that is why they are more important from the hygienic point of view than cultivable microorganisms at 22 °C. (vurup.sk)
  • Dairy starter cultures are microorganisms that are intentionally added to milk in order to create a desired outcome in the final product, most often through their growth and "fermentation" processes. (marketintellix.com)
  • 2016). The resuscitation and growth of microorganisms is also possible during storage. (academicjournals.org)
  • Four mathematical models were developed and validated for simultaneous growth of mesophilic lactic acid bacteria from added cultures and Listeria monocytogenes, during chilled storage of cottage cheese with freshor cultured cream dressing. (dtu.dk)
  • The inhibiting effect of mesophilic lactic acid bacteria from added cultures on growth of L. monocytogenes was efficiently modelled using the Jameson approach. (dtu.dk)
  • The developed models were successfully validated by using 25 growth rates for L. monocytogenes, 17 growth rates for lactic acid bacteria and a total of 26 growth curves for simultaneous growth of L. monocytogenes and lactic acid bacteria in cottage cheese. (dtu.dk)
  • Lactic acid bacteria fromadded starter culturewere on average predicted to grow16% faster than observed (Bf of 1.16 and Af of 1.32) and growth of the diacetyl producing aromaculturewas on average predicted 9% slower than observed (Bf of 0.91 and Af of 1.17). (dtu.dk)
  • The new set of models can be used to predict simultaneous growth of mesophilic lactic acid bacteria and L. monocytogenes in cottage cheese during chilled storage at constant and dynamic temperatures. (dtu.dk)
  • Lactic acid bacteria need organic nitrogen compounds for growth. (tetrapak.com)
  • Some common species of mesophilic lactic acid bacteria have recently been renamed by substitution of Lactococcus (Lc. (tetrapak.com)
  • The changes in aerobic mesophilic and psychrophilic bacteria, lactic acid bacteria, Enterobacteriaceae , as well as yeast and moulds were enumerated to determine the effect of storage temperature on microbial quality. (academicjournals.org)
  • The microbial quality of the juice during storage was assessed by enumerating the changes in aerobic mesophilic and psychrophilic bacteria, lactic acid bacteria, Enterobacteriaceae , and yeast and moulds. (academicjournals.org)
  • A novel anaerobic, mesophilic, amino-acid-fermenting bacterium, specified strain CL-84T, was isolated from your swine intestinal tract on mucin-based press. (woofahs.com)
  • In this work, the isolation and characterization of a novel anaerobic, mesophilic and cellulolytic bacterium is described. (microbiologyresearch.org)
  • Members of the Vicinamibacteraceae are aerobic, neutrophilic, psychrotolerant to mesophilic chemoheterotrophs. (microbiologyresearch.org)
  • Aerobic mesophilic bacteria and yeast and mold of whole melon and inoculated populations of L. monocytogenes on cantaloupes rind surfaces averaged 6.5 log CFU/cm2, 3.3 log CFU/cm2 and 4.6 log CFU/cm2, respectively. (usda.gov)
  • Among the treatments, only H2O2 (2.5%) reduced the aerobic mesophilic bacteria, yeast and mold and L. monocytogenes populations to 2.8, 1.3 and 1.8 log CFU/cm2, respectively. (usda.gov)
  • Fresh-cut pieces with low populations of L. monocytogenes and approximately 2.8 log CFU/g mesophilic aerobic bacteria had an extended lag phase of 6 hours at 10 deg C and 4 hours at 20 deg C before growth of the pathogen could be detected. (usda.gov)
  • Aerosol samplings yielded various mesophilic and thermophilic bacteria as well as other mold spores including Penicillium from several regions of the facility. (cdc.gov)
  • Anaerobic digestion of wastewater sludge has generally been conducted within the mesophilic temperature range of 30˚ - 40˚C or thermophilic temperature range of 55˚ - 60˚C. The mesophilic system is often preferred due to its good operational performances, good effluent quality, higher degree of stability and comparatively low energy requirement. (scirp.org)
  • Although a large number of researchers have addressed the performance of mesophilic and thermophilic anae- robic digestion, very few studies have investigated the possibility of operating anaerobic digestion in the intermediate zone between mesophilic and thermophilic range. (scirp.org)
  • Varunaivibrio sulfuroxidans is a mesophilic, facultative anaerobic, facultative chemolithoautotrophic bacterium isolated from a sulfidic shallow-water marine gas vent located at Tor Caldara, in the Tyrrhenian Sea, Italy. (rutgers.edu)
  • Sulfurovum riftiae is a mesophilic, anaerobic chemosynthetic bacterium isolated from the tube of the vent polychaete, Riftia pachyptila on the East Pacific Rise. (rutgers.edu)
  • Galenea microaerophila is a mesophilic, strictly microaerophilic, chemosynthetic bacterium isolated from the sediment of an active shallow-water hydrothermal vent in Paleochori Bay, on the Greek island of Milos. (rutgers.edu)
  • is an indicator of general water contamination, with the optimum of bacteria growth at 22 °C. Their count provides information on the total bacterial water contamination, and their higher count values indicate a penetration of contaminants from the ambient environment or troubles at the water treatment or disinfection. (vurup.sk)
  • Psychrotrophic growth decreases more slowly than that of mesophilic with decreasing temperatures. (ntmy.org)
  • On the other hand, the decrease in protein synthesis appears to be related to a decreased synthesis of individual enzymes at low growth temperatures. (ntmy.org)
  • Storage temperatures enhanced the lag phases and growth of L. monocytogenes as evidenced by the increase in generation time, implying that these conditions could be a risk factor for produce contamination. (usda.gov)
  • The majority of commercially operating digesters (78 percent) are plug flow and complete mix systems operating at mesophilic temperatures (95ºF - 105ºF). (manuremanager.com)
  • In planta production of hyperthermophilic hydrolytic enzymes could prevent the detrimental effects often seen resulting from the expression of recombinant mesophilic enzymes to plant hosts. (biomedcentral.com)
  • Cellulolytic activity and optimal growth were observed at 45 °C and neutral pH (optimum, pH 7.5). (microbiologyresearch.org)
  • The cells were Gram-negative rods that showed optimal growth at 35ºC, 2.5% NaCl, and pH 7.5. (rutgers.edu)
  • The cells were Gram-negative rods, and exhibited optimal growth at 75ºC, 3% NaCl, and pH 6.0, under chemolithoautotrophic conditions. (rutgers.edu)
  • Our data suggest that, while PhAcP is less efficient than other mammalian homologues at 25 degrees C, the thermophilic enzyme is fully active at the optimal growth temperature (98 degrees C) of P. horikoshii. (rcsb.org)
  • There has been a regulatory shift towards requesting monitoring data concerning micro-organisms with optimal growth rates that fall outside of mesophilic conditions (what might be called extremophiles: micro-organism requiring severe conditions for growth as defined by extremes of temperature, pH, chemical oxidizing agents, hypersalinity or certain types of ultraviolet light). (pharmamicroresources.com)
  • Other chemical requirements for microbial growth include such trace elements as iron, copper, and zinc. (cliffsnotes.com)
  • Certain physical conditions affect the type and amount of microbial growth. (cliffsnotes.com)
  • Microbial growth proceeds best when the osmotic pressure is ideal. (cliffsnotes.com)
  • When organic materials are kept in a pile with a suitable supply of mineral nutrients and adequate oxygen the result is rapid microbial growth. (gardeningwithangus.com.au)
  • Such microbial growth in non-carbonated bottled waters is a well-known fact, but the composition of the bottled water microbiota and its post-bottling dynamics have thus far been investigated by molecular techniques in only two natural mineral waters [ 2 , 4 ]. (biomedcentral.com)
  • A persistent question that has puzzled researchers for decades is what substrates in bottled water may fuel the observed sudden microbial growth [ 8 ]? (biomedcentral.com)
  • The high nutritional content and calorific value present in kitchen food waste contributed to its overall yield within the shortest time interval which indicates a rapid rise through the exponential phase of microbial growth rate. (scirp.org)
  • The initial Fe^2+ concentrations for the tested mesophilic and thermophilic strains were 7 and 9 g/L, respectively. (sharif.edu)
  • Phylogenetic analysis of bacterial communities in mesophilic and thermophilic bioreactors treating pharmaceutical wastewater. (microbiologyresearch.org)
  • by checking the absence of bacterial growth after enrichment. (iso.org)
  • 11 of 13 simulations of L.monocytogenes growth were within the acceptable simulation zone,which demonstrated good performance of the empirical inter-bacterial interaction model. (dtu.dk)
  • 16S rRNA gene-based analyses showed that less than 10 species-level operational taxonomic units (OTUs) dominated the bacterial communities in the water phase and associated with the bottle wall after a short phase of post-bottling growth. (biomedcentral.com)
  • Under TC stress, g-C 3 N 4 slowed down the growth of Cyanobacteria to some extent and restored the changes of bacterial community structure caused by TC, and reduced the residual TC in water body, thus eliminating the side effects of TC. (researchsquare.com)
  • Bacterial characteristics such as optimum growth temperature and salt tolerance are very important in the composition of a culture. (tetrapak.com)
  • The inhibition halos of bacterial growth were measured in millimeters. (bvsalud.org)
  • Tempo® (Vigodent, Rio de Janeiro, Brazil) did not show a inhibition halo of bacterial growth in any of the nine plates. (bvsalud.org)
  • Most environmental monitoring is traditionally focused upon the examination of mesophilic micro-organisms. (pharmamicroresources.com)
  • Species in this genus are mesophilic and have cells that are irregular rods or coccoid. (wikipedia.org)
  • A minimum and a maximum growth temperature range exist for each species. (cliffsnotes.com)
  • The MB4 probe specifically detected Methanosarcina barkeri, and the MB3 probe detected the presence of all mesophilic Methanosarcina species. (canada.ca)
  • However, bioreactor output of bioleachant with a diverse microbial population is a great challenge due to the different growth conditions of each species. (sustech.edu.cn)
  • Further kinetics investigation showed that ferrous iron oxidation fitted well with the substrate free inhibition model of Michaelis-Menten equation below 12 g/L ferrous iron, indicating that the immobilized bioreactor culturing mesophilic consortia slowed down the inhibition process caused by the substrate and end-product. (sustech.edu.cn)
  • About 5 x 10(7) spores/square centimeter were counted on a section of filter from one of the air conditioning units in the mushroom growth room. (cdc.gov)
  • Streptomyces corchorusii 77-SN-2 is a mesophilic bacterium that produces antibiotic compounds and was isolated from soil. (dsmz.de)
  • Growth only occurred anaerobically under mesophilic and neutral pH conditions. (pacb.com)
  • Li, T.,Liu, R.,Zhou, H.. A Bioreactor Culture of Mesophilic Consortia Maintains the Stability of Microbial Community and Accelerates the Regeneration of Ferric Iron[J]. MICROBIOLOGY,2023,92(5). (sustech.edu.cn)
  • Growth occurs on sugars or complex proteinaceous compounds. (microbiologyresearch.org)
  • The growth curve reflected a diauxic growth other uses for it, in particular lignosulfonates originating from when mixtures of the model compounds were used as carbon the sulfite pulping process, but the predominant technical lig- source. (lu.se)
  • Here, we characterize the in vitro and in vivo properties of the SeAgo protein from the mesophilic cyanobacterium Synechococcus elongatus . (nih.gov)
  • If the volume of the heap is large enough (say 1 cubic metre) and there are sufficient nutrients and oxygen the mesophiles generate heat by their metabolism to the point where they suppress their own growth as the temperature in the heap rises dramatically (it can reach can reach a maximum of 70-800C). (gardeningwithangus.com.au)
  • These results contribute to a better more biomass-derived carbohydrates are also used for produc- understanding of the aromatic metabolism of P. putida in tion of chemicals, a further valorization of lignin is an essential terms of growth and uptake rates, which will be helpful for component. (lu.se)
  • The variation of pH, ferrous and ferric concentration and cell growth on the time and effects of some factors, such as temperature and initial ferrous concentration, on the bioleaching of chalcopyrite concentrate obtained from Sarcheshmeh Copper Mine, were investigated. (sharif.edu)
  • The contribution of bacteria to the metal dissolution is closely controlled by the growth of bacteria, which is itself affected by the physico-chemical conditions within the bioleaching environment. (researchgate.net)
  • Growth occurred under chemolithoautotrophic conditions using sulfur or thiosulfate as the energy source and CO 2 as the carbon source. (rutgers.edu)
  • These results suggest that waiting period of 4 hours at 20 deg C before refrigeration of prepared fresh-cut cantaloupes enhanced growth of indigenous microflora and L. monocytogenes transferred to fresh-cut pieces suggesting the need for immediate refrigeration of prepared fresh-cut pieces at 5 deg C. (usda.gov)
  • Evaluation of predicted growth rates of L. monocytogenes in cottage cheese with fresh- or cultured cream dressing resulted in bias-factors (Bf) of 1.07-1.10with corresponding accuracy factor (Af) values of 1.11 to 1.22. (dtu.dk)
  • Overexpression of hyperthermophilic endoglucanase in feedstock had impacts on plant growth and cell wall composition, especially when the enzyme was highly expressed. (biomedcentral.com)
  • In the picture - Scanning electron micrograph of Galenea microaerophila cells during growth. (rutgers.edu)
  • Members of the betaproteobacterial genera Curvibacter , Aquabacterium , and Polaromonas ( Comamonadaceae ) grew in most waters and represent ubiquitous, mesophilic, heterotrophic aerobes in bottled waters. (biomedcentral.com)
  • Relative abundance changes of hundreds of multi-carbon molecules were related to growth of less than ten abundant OTUs. (biomedcentral.com)
  • Chemolithoautotrophic growth occurred with sulfur and thiosulfate as the electron donors, CO2 as the carbon source, and nitrate, oxygen (5% v/v) and ferric iron as the electron acceptors. (rutgers.edu)
  • A mesophilic iron oxidizing bacterium, Acidithiobacillus ferrooxidans, has been isolated (33\degree C) from a typical chalcopyrite copperconcentrate of the Sarcheshmeh Copper Mine in the region of Kerman located in the south of Iran. (sharif.edu)
  • It has been suggested that the cessation of RNA synthesis in general may be the controlling factor in determining low temperature growth,26 and the lack of polysome formation in E. coli when shifted to a temperature below its growth minimum has been demonstrated. (ntmy.org)
  • Subsequently, the reference growth rate parameters (μref at 25 °C)were fitted to a total of 52 growth rates fromcottage cheese to improvemodel performance. (dtu.dk)
  • Provision of nutrient salts is required to maintain the optimum growth and hence metal dissolution with the quantity of nutrients apparently being dependent on the availability of substrate i.e. head grade/pulp density of an ore/concentrate. (researchgate.net)
  • In this study, transgenic hybrid poplar ( Populus alba × grandidentata ) was generated to express a hyperthermophilic endoglucanase from Thermotoga neapolitana with an optimal temperature over 100 °C. Functional hyperthermoactive endoglucanase was successfully produced in the transgenic events, and altered phenotypic growth was observed in transgenic lines. (biomedcentral.com)
  • The combined data show that tungsten can function at the active site of some, but not all, molybdoenzymes from mesophilic bacteria. (uea.ac.uk)
  • Chemolithoautotrophic growth occurred with H 2 as the energy source and CO 2 as the carbon source. (rutgers.edu)
  • The many requirements for successful growth include those both chemical and physical. (cliffsnotes.com)
  • however, its deletion or overexpression does not change the kinetics of cell growth. (nih.gov)