Bioreactor metagenome
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA301105 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:Polyhydroxyalkanoates (PHAs) are bio-based, biodegradable polyesters that can be produced from organic-rich waste streams using mixed microbial cultures. To maximize PHA production, mixed microbial cultures may be enriched for PHA-producing bacteria with a high storage capacity through the imposition of cyclic, aerobic feast-famine conditions in a sequencing batch reactor (SBR). Though enrichment SBRs have been extensively investigated a bulk solutions-level, little evidence at the proteome level is available to describe the observed SBR behavior to guide future SBR optimization strategies. As such, the purpose of this investigation was to characterize proteome dynamics of a mixed microbial culture in an SBR operated under aerobic feast-famine conditions using fermented dairy manure as the feedstock for PHA production. At the beginning of the SBR cycle, excess PHA precursors were provided to the mixed microbial culture (i.e., feast), after which followed a long duration devoid of exogenous substrate (i.e., famine). Two-dimensional electrophoresis was used to separate protein mixtures during a complete SBR cycle, and proteins of interest were identified.
2017-01-31 | PXD003126 | Pride
Project description:Transcriptional profiling of the Donna II mixed community containing Dehalococcoides mccartyi strain 195 comparing a batch starved control to the mixed community being fed 1,2,3,4-tetrachlorobenzene as an electron acceptor. The goal was to determine which transcripts are regulated in response to a shift in a different electron acceptor rather than the consistent tetrachloroethene (PCE) that the parent reactor was maintained on.
2018-10-13 | GSE41231 | GEO
Project description:Chinese Hamster ovary (CHO) cells are the main platform used to produce recombinant proteins in the biopharmaceutical industry and are commonly cultured in either fed-batch or perfusion mode. However, the optimization of the complex biological systems used in such processes is extremely challenging. Omics approaches can reveal otherwise unknown characteristics of these systems and identify culture parameters that can be manipulated to optimize the cultivation process. Here we have applied proteomic profiling to a monoclonal antibody (mAb) production operated in perfusion mode to explore how cell biology and reactor environment change as the cell density reaches ≥ 200 x 106 cells/mL. The proteomics data show an increase of structural proteins as cell density increase, signs of oxidative stress and changes in glutathione metabolism at very high cell densities. Additionally, metabolomic profiling was carried out. See article “High cell density culture has a maintained exoproteome and metabolome” for more information.
2018-07-04 | PXD008760 | Pride
Project description:A continuous culture of Bifidobacterium longum NCC2705 was carried out in a 2.5-l reactor (Bioengineering AG, Wald, Switzerland), equipped with a Biospectra control system (Biospectra AG, Schlieren, Switzerland) and containing 2 l of MRS, added of 0.05% cysteine, inoculated with 2 % (v/v) preculture. The temperature was maintained at 37°C and the pH at 6.0 by addition of 5 M NaOH. The culture was stirred constantly at 250 rpm using two rushton type propellers. Anaerobic conditions were maintained by flushing the headspace of the reactor with CO2. After 8 h in batch mode the culture was run in continuous mode at a dilution rate of 0.1 h-1. Fresh medium was added using a peristaltic pump (Alitea, Bioengineering AG, Wald, Switzerland), and fermented broth harvested with a second peristaltic pump (Alitea, Bioengineering AG, Wald, Switzerland) set at a slightly higher flow rate. A stabilization period of 90 h (corresponding to nine reactor volume changes) was operated prior culture monitoring (t=0). Aliquots of 2 ml taken at t=31, 134 and 211 h were centrifuged (4,000 g, 1 min, room temperature) for transcriptomic analysis. Supernatants were discarded and cell pellets snap frozen in liquid nitrogen and stored at -80ºC until RNA-extraction. Keywords: Time course of Bifidobacterium longum in continuous culture
2009-04-30 | GSE14896 | GEO
Project description:A continuous culture of Bifidobacterium longum NCC2705 was carried out in a 2.5-l reactor (Bioengineering AG, Wald, Switzerland), equipped with a Biospectra control system (Biospectra AG, Schlieren, Switzerland) and containing 2 l of MRS, added of 0.05% cysteine, inoculated with 2 % (v/v) preculture. The temperature was maintained at 37°C and the pH at 6.0 by addition of 5 M NaOH. The culture was stirred constantly at 250 rpm using two rushton type propellers. Anaerobic conditions were maintained by flushing the headspace of the reactor with CO2. After 8 h in batch mode the culture was run in continuous mode at a dilution rate of 0.1 h-1. Fresh medium was added using a peristaltic pump (Alitea, Bioengineering AG, Wald, Switzerland), and fermented broth harvested with a second peristaltic pump (Alitea, Bioengineering AG, Wald, Switzerland) set at a slightly higher flow rate. A stabilization period of 90 h (corresponding to nine reactor volume changes) was operated prior culture monitoring (t=0). Aliquots of 2 ml taken at t=31, 134 and 211 h were centrifuged (4,000 g, 1 min, room temperature) for transcriptomic analysis. Supernatants were discarded and cell pellets snap frozen in liquid nitrogen and stored at -80ºC until RNA-extraction. Keywords: Time course of Bifidobacterium longum in continuous culture Bifidobacterium longum NCC2705 at time 31 versus time 134 h and versus time 211 h in continuous culture. Two technical replicares with dyes swaps
2010-05-19 | E-GEOD-14896 | biostudies-arrayexpress
Project description:Partial 16s RNA gene of mixed culture hydrogen producing reactor samples Metagenome
| PRJNA263568 | ENA
Project description:Bioreactor metagenome Simplified Mixed bacteria Culture Raw sequence reads
| PRJNA285851 | ENA
Project description:From a long time ago, supplementation of fermented enzyme foods could have worked health effects on the body in the east nevertheless, only a few studies reported functions of them such as weight loss and metabolic syndrome. Thus, it is necessary to be verified whether supplementation of fermented enzyme foods can act in the body as a functional material. Therefore, we investigated the anti-obesity effects of fermented mixed grain with digestive enzymes (FMG) in high-fat diet induced mice. Sixty C57BL/6J mice were divided into six dietary groups and fed a normal diet (ND), a high-fat diet (HFD), Bacilus Coagulans group, steamed grain group, low-dose fermented mixed grain group(L-FMG), high-dose fermented mixed grain group (H-FMG) supplement for 12 weeks. After sacrificing, body weight and body fat mass in H-FMG group were significantly decreased compared to HFD group with a simultaneous decrease in plasma lipids. Also, H-FMG significantly decreased the blood glucose and improved the glucose tolerance compared to HFD group. Moreover high-dose FMG supplementation dramatically decreased the levels of inflammatory cytokines which secreted from adipocyte. Taken together, our findings suggest that H-FMG ameliorate high fat-diet induced obesity and its complication and could be used as a potential preventive agent for obesity.
2020-09-12 | GSE157822 | GEO
Project description:metagenome of lab-scale nitritation-anammox sequencing batch reactor
| PRJNA556270 | ENA