Article
Biotechnology & Applied Microbiology
Paola Critelli, Giovanna Pesante, Stefania Lupinelli, Michele Modesti, Silvia Zanatta, Federico Battista, David Bolzonella, Nicola Frison
Summary: This study demonstrates the feasibility of upgrading protein hydrolysates from discarded biomass into high-value products. By fermenting residues from alfalfa, soybean, rice, and bovine wet blue shavings with mixed microbial cultures, high concentrations of volatile fatty acids were obtained. These acids were then used to grow bacteria capable of producing polyhydroxyalkanoates (PHAs), biodegradable polymers with potential as a replacement for petroleum-based plastics. The results showed successful production of PHAs from the hydrolysates, confirming the potential of this process for valorizing protein hydrolysates into high-value bioplastics.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2022)
Article
Biotechnology & Applied Microbiology
Brenda Aranda-Jaramillo, Elizabeth Leon-Becerril, Oscar Aguilar-Juarez, Roberto Castro-Munoz, Octavio Garcia-Depraect
Summary: This study investigates the feasibility of producing hydrogen from acid cheese whey via lactate-driven dark fermentation (LD-DF). The results show that it is technically feasible to produce hydrogen from undiluted cheese whey through lactate oxidation-mediated fermentation. Microbial community analysis reveals that Lactobacillus, Clostridium, and Klebsiella were the dominant bacterial genera when the hydrogen production rate peaked. It is suggested that LD-DF can be a strategic hydrogen-producing pathway to be implemented with cheese whey.
FERMENTATION-BASEL
(2023)
Review
Agricultural Engineering
Thibaut Lepage, Maroua Kammoun, Quentin Schmetz, Aurore Richel
Summary: This study reviews various approaches, including thermochemical, biological, and electrochemical, used for biomass-to-hydrogen conversion. It presents the advantages, limitations, and necessary improvements for each process. A techno-economic assessment highlights the promising potential of biomass-based hydrogen production but emphasizes the need for further advancements.
BIOMASS & BIOENERGY
(2021)
Article
Agricultural Engineering
Akihiro Ohnishi, Yuji Hasegawa, Naoshi Fujimoto, Masaharu Suzuki
Summary: This study evaluated the utility of co-culturing Megasphaera elsdenii and LAB in lactate-driven dark fermentation, finding that M. elsdenii achieved a stable hydrogen yield when inoculated simultaneously with LAB or after LAB culture. Additionally, M. elsdenii was able to produce hydrogen from unusable sugars such as xylose or cellobiose.
BIORESOURCE TECHNOLOGY
(2022)
Article
Agricultural Engineering
Billriz E. Condor, Mark Daniel G. de Luna, Yu-Han Chen, Jih-Heng Chen, Yoong Kit Leong, Po-Ting Chen, Chun-Yen Chen, Duu-Jong Lee, Jo-Shu Chang
Summary: This study demonstrates the improved feasibility of bioethanol production from microalgae through fermentation under high-solids loading conditions. By cultivating microalgae biomass with high carbohydrate content, screening ethanol-producing microorganisms, and optimizing acid hydrolysis, the researchers achieved higher ethanol concentration and yield. The results highlight the potential of fermenting microalgae biomass at high-solids loading in enhancing the viability of microalgae bioethanol production.
BIORESOURCE TECHNOLOGY
(2022)
Review
Chemistry, Multidisciplinary
Sunil Kumar Sailapu, Carlo Menon
Summary: This review provides a detailed overview of different sensing and engineering approaches used in self-powered electrochemical sensors (SPES) systems that solely operate using the available energy in liquid samples. The categories discussed include enzyme-based, battery-based, and ion-selective electrode-based systems. The review evaluates the benefits and drawbacks of these approaches and explores the prospects and challenges in accomplishing them.
Article
Biochemical Research Methods
Milos Kacanski, Franz Stelzer, Meg Walsh, Shane Kenny, Kevin O'Connor, Markus Neureiter
Summary: This study investigated the potential for large-scale production of mcl-PHA using volatile fatty acids (VFA). By adjusting nitrogen concentration and using a pH-stat feeding regime, a significant amount of high-quality mcl-PHA was successfully produced. The results demonstrate that waste-derived VFA can be used to produce mcl-PHA with rubber-like properties.
Article
Engineering, Electrical & Electronic
Chao Wang, Song Ye, Xiaokang Zhang, Xiao Liang, Jiamin Ye
Summary: Electromagnetic tomography based on tunneling magnetoresistance (TMR-EMT) is a new electrical tomography technology that reconstructs the magnetic permeability distribution using the boundary magnetic induction intensity. The traditional blind spots in TMR-EMT, which occur when the boundary magnetic induction intensity direction is orthogonal to the sensitive axis direction, can lead to failure of imaging. This article proposes a solution using biaxial TMR (Bi-TMR) to measure the boundary magnetic induction intensity, which eliminates the blind spots and obtains complete boundary magnetic induction intensity in the plane.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2023)
Review
Chemistry, Physical
Dan Bahadur Pal, Arvind Singh, Ashish Bhatnagar
Summary: This paper examines the development of bio-hydrogen technology as a sustainable and environmentally friendly energy source, discussing key chemical derivatives of biomass and biological processes. The challenges of bio-H2 production and the costs and benefits of different techniques are also explored.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Thermodynamics
Chi Cheng, Yingzhi Shao, Weiming Li, Jiaxin Liu, Xiangzhi Liu, Yue Zhao, Xinqi Li, Shang-Tian Yang, Chuang Xue
Summary: Anaerobic, non-photosynthetic mixotrophy (ANP mixotrophy) is a process where glucose consumption and CO2 fixation occur concurrently. Previous studies used exogenous reducing power like H2 and syngas, but their low solubility hindered efficient utilization by bacteria. This study used a bioelectrochemical system to provide electrons for CO2 fixation in acetogenic bacteria, resulting in higher alcohol production and carbon efficiency.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Energy & Fuels
Ekin Demiray, Ahzucan Gerbaga, Sevgi Ertugrul Karatay, Gonul Donmez
Summary: The current study aimed to extract anthocyanins from eggplant peel using different solvents, and then use the lignocellulosic residues for bioethanol production. The highest anthocyanin concentration was obtained when 50/50% ethanol-water was used as the solvent. Enzymatically hydrolyzed eggplant peel resulted in maximum ethanol concentrations of 27.5 g/L and 26.6 g/L for S. cerevisiae and K. marxianus, respectively. The findings suggest that eggplant peel holds promise as a raw material for biorefinery approaches.
BIOENERGY RESEARCH
(2023)
Article
Green & Sustainable Science & Technology
Claudia Irene Camacho, Sofia Est, Julio J. Conde, Gumersindo Feijoo, Maria Teresa Moreira
Summary: This study quantifies the environmental performance of a two-stage wastewater treatment process and finds that the sugar beet molasses scenario has the best environmental profile. However, the viability and competitiveness of the wine vinasses and wastewater treatment plant sludge scenarios are compromised by the lack of energy self-sufficiency, and the cheese whey scenario is far from being a zero-emission process.
JOURNAL OF CLEANER PRODUCTION
(2022)
Review
Chemistry, Physical
Yang Chen, Yanan Yin, Jianlong Wang
Summary: Dark fermentative hydrogen production is an effective and feasible technology, but not commercially applied yet due to inhibitory factors limiting hydrogen production potential. This review systematically analyzed various inhibitory factors, including inorganic, organic, and bio-inhibitors, discussing strategies for mitigation and suggesting future research directions.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Engineering, Environmental
Octavio Garcia-Depraect, Inji Mirzazada, Leonardo J. Martinez-Mendoza, Lois Regueira-Marcos, Raul Munoz
Summary: The study examined the changes in physicochemical and microbiological properties of stored simulated restaurant food waste (FW) and their impact on biohydrogen and biogas production. The storage of FW led to similar changes regardless of inoculation with lactic acid bacteria (LAB), resulting in an LAB-enriched feedstock with high lactate content. The use of stored FW showed comparable or higher hydrogen production efficiency compared to non-stored FW, while biogas production potential remained unaffected by storage, indicating the importance of lactate oxidation in FW biomethanization.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Chemistry, Physical
Carolina Mejia-Saucedo, German Buitron, Ma Fabiola Leon-Galvan, Julian Carrillo-Reyes
Summary: This research investigates the use of packed bed reactors for processing winery wastewater, exploring different biomass purge strategies to maintain long-term stability, resulting in the most stable hydrogen productivity through frequent cleaning of biofilm and suspended biomass. Long-term stability is achieved by properly balancing microbial genera in the reactor.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Biotechnology & Applied Microbiology
Naoshi Fujimoto, Keigo Mizuno, Tomoki Yokoyama, Akihiro Ohnishi, Masaharu Suzuki, Satoru Watanabe, Kenji Komatsu, Yoichi Sakata, Naohiro Kishida, Michihiro Akiba, Satoko Matsukura
JOURNAL OF GENERAL AND APPLIED MICROBIOLOGY
(2015)
Meeting Abstract
Gastroenterology & Hepatology
Koji Nakada, Masahiko Kawamura, Hideo Konishi, Taizo Iwasaki, Keishiro Murakami, Atsuo Shida, Fumiaki Yano, Nobuyoshi N. Hanyu, Norio Mitsumori, Akihiro Ohnishi, Katsuhiko Yanaga
Article
Agricultural Engineering
Hongyu Jiang, Yu Qin, S. I. Gadow, Akihiro Ohnishi, Naoshi Fujimoto, Yu-You Li
BIORESOURCE TECHNOLOGY
(2018)
Article
Biotechnology & Applied Microbiology
Akihiro Ohnishi, Shinko Abe, Shiho Nashirozawa, Sayaka Shimada, Naoshi Fujimoto, Masaharu Suzuki
APPLIED AND ENVIRONMENTAL MICROBIOLOGY
(2011)
Article
Chemistry, Physical
Akihiro Ohnishi, Yukiko Bando, Naoshi Fujimoto, Masaharu Suzuki
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2010)
Article
Chemistry, Physical
Akihiro Ohnishi, Shinko Abe, Yukiko Banclo, Naoshi Fujimoto, Masaharu Suzuki
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2012)
Article
Chemistry, Physical
Yukiko Bando, Naoshi Fujimoto, Masaharu Suzuki, Akihiro Ohnishi
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2013)
Article
Microbiology
Parag Vaishampayan, Mika Miyashita, Akihiro Ohnishi, Masataka Satomi, Alejandro Rooney, Myron T. La Duc, Kasthuri Venkateswaran
INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY
(2009)
Article
Biotechnology & Applied Microbiology
Shunichi Nakayama, Yukiko Bando, Akihiro Ohnishi, Toshimori Kadokura, Atsumi Nakazato
JOURNAL OF BIOSCIENCE AND BIOENGINEERING
(2013)
Article
Biotechnology & Applied Microbiology
Akihiro Ohnishi, Akihiro Nagano, Naoshi Fujimoto, Masaharu Suzuki
WORLD JOURNAL OF MICROBIOLOGY & BIOTECHNOLOGY
(2011)
Article
Microbiology
Minenosuke Matsutani, Takura Wakinaka, Jun Watanabe, Masafumi Tokuoka, Akihiro Ohnishi
Summary: The study suggests that Tetragenococcus halophilus may have acquired strain-specific bacteriophage resistance through repeated insertion of CRISPR loci and accumulation/deletion events.
FRONTIERS IN MICROBIOLOGY
(2021)
Article
Agricultural Engineering
Akihiro Ohnishi, Yuji Hasegawa, Naoshi Fujimoto, Masaharu Suzuki
Summary: This study evaluated the utility of co-culturing Megasphaera elsdenii and LAB in lactate-driven dark fermentation, finding that M. elsdenii achieved a stable hydrogen yield when inoculated simultaneously with LAB or after LAB culture. Additionally, M. elsdenii was able to produce hydrogen from unusable sugars such as xylose or cellobiose.
BIORESOURCE TECHNOLOGY
(2022)
Article
Microbiology
Takura Wakinaka, Minenosuke Matsutani, Jun Watanabe, Yoshinobu Mogi, Masafumi Tokuoka, Akihiro Ohnishi
Summary: This study identified the ribitol-containing wall teichoic acid as a crucial receptor for bacteriophage infection in Tetragenococcus halophilus. The mechanisms of host-phage interactions were investigated through gene mutation analysis.
MICROBIOLOGY SPECTRUM
(2022)
Article
Microbiology
Takura Wakinaka, Minenosuke Matsutani, Jun Watanabe, Yoshinobu Mogi, Masafumi Tokuoka, Akihiro Ohnishi
Summary: This study revealed the mechanisms of bacteriophage infection in Tetragenococcus halophilus. The mutations in the capsular polysaccharide synthesis (cps) loci of the host strains resulted in phage resistance. Phage adsorption assays confirmed that the capsular polysaccharide acts as a specific receptor. This study provides a theoretical basis for preventing bacteriophage infections.
MICROBIOLOGY SPECTRUM
(2023)