Acetic acid production by the newly isolated Pseudomonas sp. CSJ-3

Abstract

A fermentative acetic acid producing strain, named CSJ-3, was isolated from sludge and identified as Pseudomonas sp. on the basis of 16S rRNA gene analysis. The effects of cultivation conditions on the production of acetic acid by Pseudomonas sp. CSJ-3 were investigated in batch fermentation, and the maximum yield of acetic acid reached up to 0.49 % during 30 h cultivation under the optimum growth condition, including fermentation temperature of 37.0 °C, fermentation pH of 4.50, ethanol concentration of 8 %, carbon source (glucose) amount of 10 g/L, and rotation speed of 120 r/min. When ultraviolet (UV) irradiation was used for the mutation in culture medium to improve the yield of acetic acid, the results showed that the yield of acetic acid reached up to 0.59 %. UV and FTIR confirmed that acetic acid was the major fermented product.

Combining multivariate curve resolution and lumped kinetic modelling for the analysis of lignin degradation by copper-catalyzed Fenton-like systems

“…These species are likely to show spectral shapes that may overlap with that of H 2 O 2 . [43][44][45] However, inspection of the decay profiles of solutions' optical densities in the spectral range from 200 to 250 nm indicates a steady decrease with the treatment progress under all tested conditions (Fig. S9, ESI †).…”

Streamlining the Fermentation Process Using Mixed Cultures

“…The fermentation processes use different types of microorganisms. The identification and use of new types of microorganisms is performed with the aim of obtaining new strains with superior properties and abilities to produce high-quality and highyield products [11][12][13][14][15]. Furthermore, various types of fermentation operations and modifications to the stages within these operations have been tested to determine the most simple and efficient methods capable of producing high yields because the operational procedures of acetic acid fermentation can be complicated and require a long time when multiple processes are required.…”

Effect of Acetic Acid on Bacteriocin Production by Gram-Positive

“…This suggests that acetic acid affects the signaling pathways that control cell division and cellular nutrient diversity [29]. Acetic acid stimulation can also lead to cell growth arrest and even cell death [30]. The rupture of a single cell helps to increase the release of XIP, a sigma factor-inducing peptide [31], thereby increasing the resistance of the bacterial population and regulating the production of bacteriocin.…”