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Rabi Prasad B, Polaki S, Padhi RK. Isolation of delignifying bacteria and optimization of microbial pretreatment of biomass for bioenergy. Biotechnol Lett 2024; 46:183-199. [PMID: 38252364 DOI: 10.1007/s10529-023-03463-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 11/30/2023] [Accepted: 12/17/2023] [Indexed: 01/23/2024]
Abstract
Microbial pretreatment of lignocellulosic biomass holds significant promise for environmentally friendly biofuel production, offering an alternative to fossil fuels. This study focused on the isolation and characterization of two novel delignifying bacteria, GIET1 and GIET2, to enhance cellulose accessibility by lignin degradation. Molecular characterization confirmed their genetic identities, providing valuable microbial resources for biofuel production. Our results revealed distinct preferences for temperature, pH, and incubation period for the two bacteria. Bacillus haynesii exhibited optimal performance under moderate conditions and shorter incubation period, making it suitable for rice straw and sugarcane bagasse pretreatment. In contrast, Paenibacillus alvei thrived at higher temperatures and slightly alkaline pH, requiring a longer incubation period ideal for corn stalk pretreatment. These strain-specific requirements highlight the importance of tailoring pretreatment conditions to specific feedstocks. Structural, chemical, and morphological analyses demonstrated that microbial pretreatment reduced the amorphous lignin, increasing cellulose crystallinity and accessibility. These findings underscore the potential of microbial pretreatment to enhance biofuel production by modifying the lignocellulosic biomass. Such environmentally friendly bioconversion processes offer sustainable and cleaner energy solutions. Further research to optimize these methods for scalability and broader application is necessary in the pursuit for more efficient and greener biofuel production.
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Affiliation(s)
- B Rabi Prasad
- Department of Biotechnology, SoET, GIET University, Gunupur, Odisha, 765022, India.
| | - Suman Polaki
- Department of Biotechnology, SoET, GIET University, Gunupur, Odisha, 765022, India
| | - Radha Krushna Padhi
- Department of Chemical Engineering, SoET, GIET University, Gunupur, Odisha, 765022, India
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Chowdhury G, Kitahara K, Taniguchi M, Uesaka K, Muzembo BA, Mitra D, Ohno A, Ramamurthy T, Dutta S, Miyoshi SI, Mukhopadhyay AK. Complete genomic sequence of Vibrio fluvialis strain IDH5335 isolated from a patient with diarrhea in Kolkata, India. Microbiol Resour Announc 2023; 12:e0070723. [PMID: 37943041 PMCID: PMC10871063 DOI: 10.1128/mra.00707-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2023] [Accepted: 10/03/2023] [Indexed: 11/10/2023] Open
Abstract
We isolated a Vibrio fluvialis strain (IDH5335) from a stool sample collected from a patient with diarrhea. In this announcement, we report the complete genomic sequence of this organism, which was obtained by combining Illumina and Oxford Nanopore sequencing data.
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Affiliation(s)
- Goutam Chowdhury
- ICMR-National Institute of Cholera and Enteric Diseases, Kolkata, West Bengal, India
- Collaborative Research Center of Okayama University for Infectious Diseases in India at ICMR-NICED, Kolkata, West Bengal, India
| | - Kei Kitahara
- Collaborative Research Center of Okayama University for Infectious Diseases in India at ICMR-NICED, Kolkata, West Bengal, India
- Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
| | - Makoto Taniguchi
- Oral Microbiome Center, Taniguchi Dental Clinic, Takamatsu, Kagawa, Japan
| | - Kazuma Uesaka
- Graduate School of Bioagricultural Sciences, Nagoya University, Nagoya, Aichi, Japan
| | - Basilua Andre Muzembo
- Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
| | - Debmalya Mitra
- Collaborative Research Center of Okayama University for Infectious Diseases in India at ICMR-NICED, Kolkata, West Bengal, India
| | - Ayumu Ohno
- Collaborative Research Center of Okayama University for Infectious Diseases in India at ICMR-NICED, Kolkata, West Bengal, India
- Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
| | | | - Shanta Dutta
- ICMR-National Institute of Cholera and Enteric Diseases, Kolkata, West Bengal, India
| | - Shin-ichi Miyoshi
- Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
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