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Bacteria - PubMed

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Last Updated: 27 September 2022

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Preparation of biodegradable carboxymethyl cellulose/dopamine/Ag NPs cryogel for rapid hemostasis and bacteria-infected wound repair.

Free DA is crosslinked by oxidative polymerization at low temperatures to produce cryogels with different pore sizes, resulting in CMC grafts with different DA amounts. To produce hemostatic cryogel with antibacterial capability, the CMC/DA-3 cryogel is packed with silver nanoparticles. The CMC/DA-3/Ag cryogel has good antibacterial activity and can resolve rapid hemostasis, according to antibacterial tests and animal hemostasis experiments. The wound healing in the S. aurus skin defect model is dramatically enhanced relative to that of commercial gelatin sponge. In summary, the novel cryogel has a lot of promise in rapid hemostasis and infected wound healing.

Source link: https://doi.org/10.1016/j.ijbiomac.2022.09.172


Characterizing the chicken gut colonization ability of a diverse group of bacteria.

However, probiotics that use bacterial strains capable of permanently colonizing the gut after a single exposure are expected to have a larger effect on the growing gut community as well as the host, and may help reduce costs in an industrial setting. We review 2 colonization experiments using 14 different bacterial strains from various phylogenetic families here. Groups of chicks were orally inoculated on the day of hatch with different bacterial strains that had been previously unknown to adult heavy breeders in both experiments. The bacterial strains in broiler chicks were discovered 7 d after treatment in the first experiment. Colonization was initiated in layer chicks during the second experiment, and it was delayed until d 17. We also investigated the effects of artificial colonization on microbiota compositions.

Source link: https://doi.org/10.1016/j.psj.2022.102136


Growth studies of dominant lactic acid bacteria in orange juice and selection of strains to ferment citric fruit juices with probiotic potential.

The aim of the study was to determine whether dominant lactic acid bacteria in orange juice increased or not with cysteine, and then to select the most nutritionally promising strains for growth assays in the food matrix and analysis of fruit juice fermentation's beneficial attributes. One L. brevis and two L. plantarum were selected based on growing lower than 20% and higher than 70% in mMRS with and without cysteine requirement. Autochthonous L. plantarum strains with the capability of overcoming nutritional deficiencies and beneficial characteristics are promising candidates for further study as novel probiotic and/or preservative starters to ferment citric fruit juices.

Source link: https://doi.org/10.1007/s42770-022-00830-1


Effects of ruminal lipopolysaccharides on growth and fermentation end products of pure cultured bacteria.

In addition, there is still no information about the potential effects of LPS developed from ruminal microbiome on ruminal bacteria species whose abundance is associated with ruminal acidosis. E. coli-LPS, ruminal-LPS, and a 1:1 mixture of E. coli-LPS, lactate-utilizing bacterium are among the study's goals. According to RUM and MIX, respectively, the maximum specific growth rate of S. bovis JB1 decreased by about 19% and 23% when RUM and MIX were dosed, respectively, when compared to the CTRL. Lactate concentrations from S. bovis JB1 decreased significantly by 31% and 22% in response to RUM and MIX dosing relative to CTRL; respectively. In addition, RUM did not have a direct effect on Megasphaera elsdenii T81 growth, which was not affected by RUM's growth.

Source link: https://doi.org/10.1038/s41598-022-20073-2


Biofilm-mediated decolorization, degradation and detoxification of synthetic effluent by novel biofilm-producing bacteria isolated from textile dyeing effluent.

Biofilm-mediated bioremediation of xenobiotic pollutants is a cost-effective biological method that isn't environmentally friendly. 36 out of 55 bacterial isolates developed biofilms in glass test tubes containing salt-optimized broth plus 2% glycerol, according to this report. In some bacterial isolates, the Direct Red 28 decolorization process was optimized. Five of the bacteria tested could decolorize 97. 8% (48%) of DR 28 dye under optimum conditions. The azo bond peak at 476 nm had almost disappeared in all of the decolorized samples, according to the UV-Vis spectral analysis. In the decolorized samples, the chemical oxygen demand dropped by 83. 3 percent, but plant probiotic bacterial growth was indistinguishable in the biodegraded metabolites and the original dye. In addition, seed germination was higher in the biodegraded metabolites than the parent dye. Moreover, the examination of BPB might have provided potential solutions for the bioremediation of industrial dyes in wastewater.

Source link: https://doi.org/10.1016/j.envpol.2022.120237


Characterization of potential probiotic bacteria Enterococcus faecium MC-5 isolated from the gut content of Cyprinus carpio specularis.

The strain E. faecium MC-5 showed a high resistance to low pH, high bile salt, lysozyme, and phenol. The test pathogens were unable to produce significant antimicrobial activity against the cell-free supernatant of strain MC-5. Strain MC-5 was finely attached to human colon adenocarcinoma cells in a scanning electron microscope photograph. The strain MC-5 demonstrated high bile salt hydrolase activity and excellent cholesterol removal capacity of 70. 2 percent, as well as excellent cholesterol removal capacity of 70. 2 percent. The intact cells of strain MC-5 demonstrated high DPPH scavenging activity, as shown by the strain MC-5's intact cells. The EPS produced by E. faecium MC-5 inhibited Listeria monocytogenes, Staphylococcus aureus, and Salmonella enterica worms adhesion to HCT-15 cells, with maximum inhibition rates of 41. 82, 40. 34, and 55. 61%, respectively, according to exclusion and competitive assays.

Source link: https://doi.org/10.1016/j.micpath.2022.105783


Biochar addition augmented the microbial community and aided the digestion of high-loading slaughterhouse waste: Active enzymes of bacteria and archaea.

Increasing the biochar up to 1. 5% resulted in a decrease in BP at 6% SHW. Compared to control, the VFAs' production in all 0. 55 biochar amended reactors was highly significant. In 6% and 8% SHW, respectively, the most prominent number of OTUs at 0. 5 biochar was 567 and 525. According to Biochar, Clostridium was present in the Clostridium synthesis and production of lyases and transaminases involved in the degradation of lipids and protein. The Biochar addition to Methanosaeta and Methanosphaera, in which the key enzymes were reduced and hydrogenase, were greatly improved, raised the Methanosaeta and Methanosphaera abundance, which was characterized by reducedtaeta and hydrogenase.

Source link: https://doi.org/10.1016/j.chemosphere.2022.136535


Accelerated degradation of cellulose in silkworm excrement by the interaction of housefly larvae and cellulose-degrading bacteria.

The bottleneck restricting silkworm excrement recycling is the environmental contamination exacerbated by silkworm excrement, which is heavy in refractory cellulose. This research was conducted to find the consequences of housefly larvae vermicomposting on the biodegradation of cellulose in silkworm excrement. After six days, a 58. 90% decrease in cellulose content in treatment groups was found, considerably higher than those without housefly larvae. By limiting the external environmental conditions, it was discovered that housefly larvae increased the abundance of cellulose-degrading bacterial genus. The findings of this research revealed that housefly larvae can significantly accelerate cellulose degradation in silkworm excrement by raising the number of cellulose-degrading bacterial species and cellulase.

Source link: https://doi.org/10.1016/j.jenvman.2022.116295


Antibacterial effects of vanilla ingredients provide novel treatment options for infections with multidrug-resistant bacteria - A recent literature review.

Vanillin and vanillin acid are biologically active ingredients in vanilla that have long been known for their health-beneficial, including antimicrobial function, as well as their role as a flavoring agent. We therefore conducted a literature search from the previous ten years, summarizing the findings regarding the effects of vanilla constituents against bacterial and MDR pathogens. vanillin and vanillic acid had potent effects directed against specific Gram-positive and Gram-negative bacteria, inhibiting growth, viability, biofilm manufacturing, quorum sensing, and virulence, according to our survey.

Source link: https://doi.org/10.1556/1886.2022.00015

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions