ArticleMicrobial cell factories2020
High-level production of poly-γ-glutamic acid from untreated molasses by Bacillus siamensis IR10.
Article in Microbial cell factories, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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8 citing papers in PubMed, 26 citations in OpenAlex.
- Efficient production of poly-γ-glutamic acid using computational fluid dynamics simulations byFood chemistry: X · 2025Article
- Enhanced Poly-γ-Glutamic Acid Production by a Newly Isolated Bacillus halotolerans F29.Journal of microbiology (Seoul, Korea) · 2024Article
- Effects of FeMicrobial cell factories · 2023Article
- Poly-gamma-glutamic acid biopolymer: a sleeping giant with diverse applications and unique opportunities for commercialization.Biomass conversion and biorefinery · 2023Review
- Engineering of a newly isolated Bacillus tequilensis BL01 for poly-γ-glutamic acid production from citric acid.Microbial cell factories · 2022Article
- Genetic and metabolic engineering for poly-γ-glutamic acid production: current progress, challenges, and prospects.World journal of microbiology & biotechnology · 2022Review
- Efficient molasses utilization for low-molecular-weight poly-γ-glutamic acid production using a novel Bacillus subtilis stain.Microbial cell factories · 2022Article
- Low Molar Mass Dextran: One-Step Synthesis With Dextransucrase by Site-Directed Mutagenesis and its Potential of Iron-Loading.Frontiers in bioengineering and biotechnology · 2021Article
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Authors and funding
5 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundPoly-γ-glutamic acid (γ-PGA) is a promising biopolymer and has been applied in many fields. Bacillus siamensis SB1001 was a newly isolated poly-γ-glutamic acid producer with sucrose as its optimal carbon source. To improve the utilization of carbon source, and then molasses can be effectively used for γ-PGA production,
resultsBacillus siamensis IR10 was screened for the production of γ-PGA from untreated molasses. In batch fermentation, 17.86 ± 0.97 g/L γ-PGA was obtained after 15 h, which is 52.51% higher than that of its parent strain. Fed-batch fermentation was performed to further improve the yield of γ-PGA with untreated molasses, yielding 41.40 ± 2.01 g/L of γ-PGA with a productivity of 1.73 ± 0.08 g/L/h. An average γ-PGA productivity of 1.85 g/L/h was achieved in the repeated fed-batch fermentation. This is the first report of such a high γ-PGA productivity. The analysis of the enzyme activities showed that they were affected by the carbon sources, enhanced ICDH and GDH, and decreased ODHC, which are important for γ-PGA production.
conclusionThese results suggest that untreated molasses can be used for economical and industrial-scale production of γ-PGA by B. siamensis IR10.
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