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Acid Production - Springer Nature

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Last Updated: 04 November 2022

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Biohythane and organic acid production from food waste by two-stage anaerobic digestion: a review within biorefinery framework

Since treating the organic waste in the second stage rather than treating the organic waste, two-stage anaerobic digestion is gaining traction due to the process's stability and the possibility of recovering multiple-resources such as biohydrogen and organic acids from the first stage's dark fermentation and methane in the AD. This report aims to give up-to-date summary of developments in biohythane and organic acids production from food waste in the two-stage DF-AD process.

Source link: https://doi.org/10.1007/s13762-022-03937-y


Improving poly-γ-glutamic acid production by Bacillus licheniformis ATCC 9945^a strain under citrate and glutamate pulsed feedings and biopolymer characteristic evaluation

Poly-u03b3-glutamic acid, a biopolymer made of glutamate monomers, is a biopolymer composed of glutamate monomers. Because of the high attained production numbers, Bacillus licheniformis ATCC 9945, a strain, is common for the biopolymers synthesis. However, in this research, the culture medium E compounds were modified to produce a new medium for higher production of u03b3-PGA. In the modified E medium, the next aim of the study was to achieve increased u03b3-PGA production by using a new simultaneous pulsed feeding strategy of citrate and glutamate.

Source link: https://doi.org/10.1007/s00289-021-04026-9


Tailoring and optimizing fatty acid production by oleaginous yeasts through the systematic exploration of their physiological fitness

We cultivated Cutaneotrichosporon oleaginosus and Yarrowia lipolytica at various C/N ratios and temperatures in a defined medium with glycerol as carbon source and urea as nitrogen source in this study, as nitrogen source and urea as nitrogen source. C. oleaginosus and maximum oil extraction by C. oleaginosus and a temperature of 21 g/g for Y. lipolytica, we measured a temperature of 30 °C and a C/N ratio of 175 g/g for Y. lipolytica. We used RSM to achieve maximum oil production by C. oleaginosus and a C/N ratio of 140 g/g for Y. According to C. oleaginosus and 31% in Y. lipolytica, switching from higher temperature to lower cultivation temperature changed the oils from more saturated to unsaturated by 14%. 3. 3 in C. oleaginosus and 1. 5% in Y. lipolytica were all produced by higher cultivation temperatures, resulting in the production of longer saturated fatty acids, 3% in C. oleaginosus and 1. 5% in Y. lipolytica. Conclusions by RSM We found the optimum C/N ratio and temperature for C. oleaginosus and Y. lipolytica by RSM in this research.

Source link: https://doi.org/10.1186/s12934-022-01956-5


Optimization and kinetic modeling of media composition for hyaluronic acid production from carob extract with Streptococcus zooepidemicus

This research focused on investigating carob pods for microbial HA production and kinetic modeling of HA fermentation. The optimal medium composition was determined using Plackett's u2013Burman Design for HA production from carob extract with Streptococcus zoooepidemicus. para. Maximum HA fermentation of shake flask fermentation was 2. 6 g/L in the ideal medium, with 10 g/L of MgSO_4. 7H_2O, 10. 0 g/L of casein, 0. 5 g/L of KH_2O, 10. 0 g/L of casein, 0. 5 g/L of KH_4_4, 2. 5 g/L of NaCl, 0. 05 g/L of KH_4_42. 0 g/L of a fermentation of KH_4 2. 6 1. 6 1. 6 2. 6 2. 6 0. 6 3. 2 0. 6 h/L of KH_2O, 0. 6 2. 4 g/L of KH_2O, 10. 0 g/L of KH_2O, 10. 0 g/L of NaCl of NaCl of NaCl of KH_2O/L of KH_2O 0. 02O/L of NaCl of NaCl of K_4 0. 6 g/L of KH_4 1. 0 g/L of K_4 g/L of The fermentation process with the optimal medium composition was modeled using three different models, including the logistic model for biomass production, the Luedeking U2013Piret model for HA production, and the updated Luedekingu2013Piret model for substrate consumption in the continuation of the study. Consequently, carob extract can be used as a promising carbon source for producing HA.

Source link: https://doi.org/10.1007/s00449-022-02806-9


A facile process for adipic acid production in high yield by oxidation of 1,6-hexanediol using the resting cells of Gluconobacter oxydans

Background Adipic acid is one of the most commonly used industrial chemicals used mainly for the manufacture of Nylon 6,6, but also for the manufacture of polyurethane, plasticizers, and unsaturated polyester resins, as well as a component of the biodegradable polyester poly. Gluconobacter oxydans cells may be oxidized 1,6-hexanediol, a potentially biobased diol to AA, and we've previously reported it. In batch mode at pH 7 and 30 g/L in fed-batch, conversion of 10 g/L 1,6-hexanediol to adipic acid in full conversion was confirmed by an increase in the substrate's concentrations, with 100% conversion of the substrate to adipic acid in 30 h.

Source link: https://doi.org/10.1186/s12934-022-01947-6


Autoregulation of H^+/lactate efflux prevents monocarboxylate transport (MCT) inhibitors from reducing glycolytic lactic acid production

We investigated whether small-molecule MCT inhibitors reduced cell H+/lactate production. Methods Cellular Assays In a panel of pancreatic ductal adenocarcinoma cells spanning a variety of glycolytic phenotypes, MCT activity and lactic acid production was established by a panel of pancreatic ductal adenocarcinoma cells ranging from a variety of glycolytic phenotypes. MCT activity did not correlate with lactic acid production, showing that it is not limited by membrane permeability properties. Conclusions We have mathematically established evidence that pharmacological and physiological modulators of MCTs cannot proportionately reduce lactic acid production due to autoregulation's stabilizing effect on overall flux.

Source link: https://doi.org/10.1038/s41416-022-01910-7


The ion balance of Shotokuseki extract promotes filaggrin fragmentation and increases amino acid production and pyrrolidone carboxylic acid content in three-dimensional cultured human epidermis

The purpose of this research was to determine the penetration of ions in Shotokuseki extract into the three-dimensional cultured epidermis and the effects of NMF on amino acid biosynthesis and pyrrolidone carboxylic acid formation. Several ions, amino acids, and pyrrolidone carboxylic acid were quantified by inductively coupled plasma mass spectrometry, fully automated amino acid analyzer, or high-performance liquid chromatography in three-dimensional cultured epidermis following the application of SE. Bleomycin hydrolase's activity has also increased.

Source link: https://doi.org/10.1007/s13659-022-00353-0

* 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