Production of 2-keto-gluconic acid from glucose by immobilized Pseudomonas plecoglossicida resting cells

Hou, Zhiliang; Sun, Lei; Wang, Da-Ming; Sun, Wenjing; Cui, Fengjie; Si-lian, YU

doi:10.1007/s13205-020-02243-z

Cited by 5 publications

(2 citation statements)

References 28 publications

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“…Many soil bacteria other than Pseudomonas sp. can secrete 2-keto-gluconic acid, e.g., Gluconobacter oxidans. This suggests that in environmentally relevant conditions, the presence of soil microbiota associated with plant roots could contribute to the reduction of CeO 2 NMs.…”

Section: Resultsmentioning

confidence: 99%

Bacterial Metabolites and Particle Size Determine Cerium Oxide Nanomaterial Biotransformation

Collin

Dœlsch

Proux

et al. 2022

Environ. Sci. Technol.

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Soil is a major receptor of manufactured nanomaterials (NMs) following unintentional releases or intentional uses. Ceria NMs have been shown to undergo biotransformation in plant and soil organisms with a partial Ce(IV) reduction into Ce(III), but the influence of environmentally widespread soil bacteria is poorly understood. We used high-energy resolution fluorescencedetected X-ray absorption spectroscopy (HERFD-XAS) with an unprecedented detection limit to assess Ce speciation in a model soil bacterium (Pseudomonas brassicacearum) exposed to CeO 2 NMs of different sizes and shapes. The findings revealed that the CeO 2 NM's size drives the biotransformation process. No biotransformation was observed for the 31 nm CeO 2 NMs, contrary to 7 and 4 nm CeO 2 NMs, with a Ce reduction of 64 ± 14% and 70 ± 15%, respectively. This major reduction appeared quickly, from the early exponential bacterial growth phase. Environmentally relevant organic acid metabolites secreted by Pseudomonas, especially in the rhizosphere, were investigated. The 2keto-gluconic and citric acid metabolites alone were able to induce a significant reduction in 4 nm CeO 2 NMs. The high biotransformation measured for <7 nm NMs would affect the fate of Ce in the soil and biota.

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Section: Resultsmentioning

confidence: 99%

Bacterial Metabolites and Particle Size Determine Cerium Oxide Nanomaterial Biotransformation

Collin

Dœlsch

Proux

et al. 2022

Environ. Sci. Technol.

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“…Fermentation can be performed by Gluconobacter oxydans (Kulka et al 1951;Li et al 2016), Klebsiella pneumoniae (Wei et al 2013;Sun et al 2014), Pseudomonas spp. (Lockwood et al 1941;Hou et al 2020) and Serratia marcescens (Misenheimer et al 1965;Zhang et al 2011b). On the industrial scale, 2-KGA ( 14) has been produced mostly by Pseudomonas spp.…”

Section: -Keto-d-gluconic Acidmentioning

confidence: 99%

The industrial versatility of Gluconobacter oxydans: current applications and future perspectives

Alves-Ribeiro

Oliveira

Lima

et al. 2022

World J Microbiol Biotechnol

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Gluconobacter oxydans is a well-known acetic acid bacterium that has long been applied in the biotechnological industry. Its extraordinary capacity to oxidize a variety of sugars, polyols, and alcohols into acids, aldehydes, and ketones is advantageous for the production of valuable compounds. Relevant G. oxydans industrial applications are in the manufacture of L-ascorbic acid (vitamin C), miglitol, gluconic acid and its derivatives, and dihydroxyacetone. Increasing efforts on improving these processes have been made in the last few years, especially by applying metabolic engineering. Thereby, a series of genes have been targeted to construct powerful recombinant strains to be used in optimized fermentation. Furthermore, low-cost feedstocks, mostly agro-industrial wastes or byproducts, have been investigated, to reduce processing costs and improve the sustainability of G. oxydans bioprocess. Nonetheless, further research is required mainly to make these raw materials feasible at the industrial scale. The current shortage of suitable genetic tools for metabolic engineering modifications in G. oxydans is another challenge to be overcome. This paper aims to give an overview of the most relevant industrial G. oxydans processes and the current strategies developed for their improvement.

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New perspectives into Gluconobacter-catalysed biotransformations

Ripoll

Lerma-Escalera

Morones‐Ramírez

et al. 2023

Biotechnology Advances

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Production of 2-keto-gluconic acid from glucose by immobilized Pseudomonas plecoglossicida resting cells

Cited by 5 publications

References 28 publications

Bacterial Metabolites and Particle Size Determine Cerium Oxide Nanomaterial Biotransformation

Bacterial Metabolites and Particle Size Determine Cerium Oxide Nanomaterial Biotransformation

The industrial versatility of Gluconobacter oxydans: current applications and future perspectives

New perspectives into Gluconobacter-catalysed biotransformations

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