Article
Chemistry, Physical
Rami Bechara, Fouad Azizi, Cassia Boyadjian
Summary: This study investigates the enhanced hydrogen production from microalgae through a biophotolytic cyclic process using the sulfur deprivation method, optimizing reaction conditions to improve hydrogen yield and efficiency, leading to significant improvements in the process.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Jemma Manoyan, Tatsiana Samovich, Nikolai Kozel, Vadim Demidchik, Lilit Gabrielyan
Summary: The study investigated the biohydrogen generation in green microalgae under nitrogen-deprivation conditions, finding that Parachlorella kessleri RA-002 showed significantly increased H-2 yield in TAP and Tamiya media. Nitrogen deprivation led to higher H-2 production possibly due to enhanced PS II activity. Additionally, the study revealed that nitrogen deprivation suppressed photosynthetic activity of PS II while facilitating the anaerobic conditions necessary for increased H-2 yield.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Biochemistry & Molecular Biology
Gonzalo Calo, Maria Agustina De Marco, Graciela Lidia Salerno, Giselle Maria Astrid Martinez-Noel
Summary: In this study, TOR signaling in the smallest free-living eukaryote Ostreococcus tauri was investigated. The results showed that O. tauri responds to TOR inhibitors more similarly to plants than to Chlamydomonas, and Ottor is dynamically regulated under nutritional stress. Therefore, this alga is proposed as a good and simple model for studying TOR kinase and its regulation.
Article
Ecology
Taylor L. Price, Jennifer Harper, Steven N. Francoeur, Halvor M. Halvorson, Kevin A. Kuehn
Summary: Research suggests that autotroph-heterotroph microbial interactions exert bottom-up controls on energy and nutrient transfer in aquatic detrital-based food webs. This study found that litter-associated algal and fungal production rates increased with higher nutrient and light availability, while microbial phosphorus absorption efficiency varied across diets.
Review
Environmental Sciences
Jayaseelan Arun, Kannappan Panchamoorthy Gopinath, Ramachandran Sivaramakrishnan, PanneerSelvam SundarRajan, Rajagopal Malolan, Arivalagan Pugazhendhi
Summary: Algae are a promising energy reserve for biofuel production due to their ability to sequester carbon dioxide efficiently. Hydrothermal liquefaction is the preferred mode for algae biomass conversion into biofuels, resulting in lower greenhouse gas emissions and higher energy value. This review highlights the potential of algae-based bioenergy for green energy and environmental impact evaluation.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Correction
Multidisciplinary Sciences
Qingyao Wu, Jingjing Cao, Xiao Wang, Yan Liu, Yajie Zhao, Hui Wang, Yang Liu, Hui Huang, Fan Liao, Mingwang Shao, Zhenghui Kang
Summary: A correction to the paper has been published as indicated in the link provided.
NATURE COMMUNICATIONS
(2021)
Article
Chemistry, Physical
Sergio Garcia-Dali, Javier Quilez-Bermejo, Jimena Castro-Gutierrez, Niki Baccile, Maria T. Izquierdo, Alain Celzard, Vanessa Fierro
Summary: This study presents efficient electrodes for the hydrogen evolution reaction (HER) based on low-cost and metal-free carbon catalysts. Phytic acid, a biosourced molecule containing carbon (C) and phosphorus (P), is used as a precursor to produce P-doped carbon materials. The conversion of P-O-type groups into P-C-type species is crucial for the catalytic activity of P-doped carbon materials, with P-C-type groups being the key factor in the electrocatalytic activity.
Article
Biotechnology & Applied Microbiology
Totsapon Pewnual, Narirat Jampapetch, Sathonkorn Saladtook, Wuttinun Raksajit, Rachaneekorn Klinsalee, Cherdsak Maneeruttanarungroj
Summary: As world energy consumption increases, renewable energy sources, such as hydrogen produced biologically, offer a promising solution with net zero carbon dioxide emissions. By depriving green algae of potassium, researchers found a significant increase in hydrogen production. This finding highlights the potential of potassium deprivation as a method to enhance hydrogen production in biological systems.
JOURNAL OF APPLIED PHYCOLOGY
(2022)
Review
Green & Sustainable Science & Technology
Fernando G. Torres, Gabriel E. De-la-Torre
Summary: Taking advantage of green algae's properties and compounds can provide timely and sustainable alternatives for energy storage and generation. The technologies using green micro- and macro-algae have applications in extracting bio-fuels, fabricating energy storage and conversion devices, and developing novel dye-sensitized solar cells. Despite the wide range of energy applications, there are still challenges to overcome for commercially viable and scalable technologies, requiring further research.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2022)
Article
Energy & Fuels
Shuofeng Wang, Yifan Zhai, Zhe Wang, Ruifeng Hou, Tianyue Zhang, Changwei Ji
Summary: This study compares the effects of lean combustion and exhaust gas recirculation (EGR) on the combustion behavior of hydrogen fuel. It is found that EGR dilution has a more significant impact on laminar burning velocity, while EGR dilution more effectively reduces the NO mole fraction in the final products.
Article
Chemistry, Physical
Wenjing Dong, Chengcheng Shao, Xuliang Li, Dandan Zhu, Qian Zhou, Xifan Wang
Summary: In order to meet the growing refueling demand of hydrogen fuel cell vehicles, this paper proposes an integrated planning method of green hydrogen supply chain. The method utilizes the k-shorted path method to analyze refueling load and establishes a two-stage integrated planning model to minimize costs. The proposed model is reformulated as a MILP problem and case studies in Xi'an, China verify its effectiveness and discuss the impact of electricity prices and k values.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Wenjing Dong, Chengcheng Shao, Xuliang Li, Dandan Zhu, Qian Zhou, Xifan Wang
Summary: This paper proposes an integrated planning method of green hydrogen supply chain to meet the growing refueling demand of hydrogen fuel cell vehicles with carbon-free hydrogen supply. The method includes analyzing HFCV refueling load and establishing a two-stage integrated planning model to minimize investment and operation cost. The case studies in Xi'an, China verify the validity and effectiveness of the proposed method, showing that integrated planning can achieve synergy benefits.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Review
Cell Biology
Wojciech Pokora, Szymon Tulodziecki, Agnieszka Dettlaff-Pokora, Anna Aksmann
Summary: Reactive oxygen species (ROS) and reactive nitrogen species (RNS) play regulatory roles in the development of higher plants, algae, and animals. In green cells, the redox potential regulates growth rate. Hydrogen peroxide and nitric oxide directly participate in algal cell development by regulating the expression of proteins involved in the cell cycle. This regulation involves the interaction of these signaling molecules with redox-sensitive transcription factors and signaling pathways. This paper aims to elucidate the involvement of hydrogen peroxide and nitric oxide in algal cell cycle regulation and evaluate their commercial applicability.
Article
Environmental Sciences
Ruohua Qu, Qiting Xie, Jiang Tian, Min Zhou, Fei Ge
Summary: The study found that silver nanoparticles significantly inhibited the nitrogen-phosphorus absorption process of algae, resulting in a significant reduction in phosphorus removal efficiency. Metabolomics analysis showed that silver nanoparticles disrupted metabolic responses related to phosphorus absorption, affecting phospholipid metabolism and the generation of related metabolites, thereby impeding algae assimilation of phosphorus.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Plant Sciences
Yuval Milrad, Shira Schweitzer, Yael Feldman, Iftach Yacoby
Summary: The metabolism of green algae, particularly the interrelation between NADPH and H-2 accumulation, plays a crucial role in maintaining redox balance under light fluctuations. Energy transfer between H-2 and NADPH is found to be bidirectional and essential for initiating photosynthetic electron flow, as well as dark fermentative metabolism.
Article
Chemistry, Physical
V Grechanik, I Naidov, M. Bolshakov, A. Tsygankov
Summary: This study demonstrates the possibility of phototrophic hydrogen production in C. reinhardtii under N-deprived conditions, indicating a potential strategy for sustainable hydrogen production. The implementation of a two-step illumination protocol can significantly enhance hydrogen production, and the relationship between PSII activity and hydrogen production in C. reinhardtii was investigated.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Plant Sciences
Sergey Kosourov, Maximilian Bohm, Moritz Senger, Gustav Berggren, Karin Stensjo, Fikret Mamedov, Peter Lindblad, Yagut Allahverdiyeva
Summary: Photosynthetic production of molecular hydrogen is a potential source of renewable energy, but current efficiency levels are too low for industrial applications due to physiological, biochemical, and engineering barriers. Researchers have some understanding of the metabolic pathways and enzymes involved in H-2 production in cyanobacteria and green algae, and have made progress in engineering photosynthetic cell factories to overcome major obstacles to efficient and sustainable H-2 production.
PHYSIOLOGIA PLANTARUM
(2021)
Review
Biology
Ekaterina Petushkova, Ekaterina Mayorova, Anatoly Tsygankov
Summary: Purple non-sulfur bacteria are promising producers of biofuels, capable of utilizing organic waste waters to produce valuable compounds. Understanding their anaplerotic pathways is crucial for utilizing them as potential biofuel producers.
Article
Biochemistry & Molecular Biology
Makhmadyusuf K. Khasimov, Ekaterina P. Petushkova, Anna N. Khusnutdinova, Nikolay A. Zorin, Khorcheska A. Batyrova, Alexander F. Yakunin, Anatoly A. Tsygankov
Summary: The study determined the structural and functional role of the T. bogorovii HydS C-terminal end in the HydSL hydrogenase complex, finding that the C-terminal end is involved in the interaction of HydSL hydrogenase with Isp1 protein for membrane anchoring and electron transfer.
BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS
(2021)
Editorial Material
Biophysics
Anatoly Tsygankov, Andrew Rubin, Valery Tuchin, Galina Riznichenko, Alexei Solovchenko
Summary: This Commentary introduces a call for submissions for the upcoming Special Issue, which will focus on the science presented at the 9th Congress of The Russian Photobiological Society on Actual Problems in Photobiology.
BIOPHYSICAL REVIEWS
(2021)
Editorial Material
Biophysics
Anatoly Tsygankov, Valery Tuchin
Summary: This article presents commentaries on the section of Biophotonics of molecules and nanoparticles from the 9th Congress of the Russian Photobiological Society. The presentations are briefly introduced, along with the main conclusions made by the authors. This section included plenary lectures, oral presentations, and posters, which featured interesting talks and follow-up discussions.
BIOPHYSICAL REVIEWS
(2022)
Article
Plant Sciences
Anita Santana-Sanchez, Lauri Nikkanen, Elisa Werner, Gabor Toth, Maria Ermakova, Sergey Kosourov, Julia Walter, Meilin He, Eva-Mari Aro, Yagut Allahverdiyeva
Summary: This study characterizes the phenotypic and biophysical properties of Anabaena mutants and reveals the crucial roles of Flv1A and Flv3A proteins in processes such as photosynthesis, CO2 regulation, and carbon concentrating mechanisms. Additionally, the lack of Flv3A was found to enhance H2 photoproduction by downregulating the uptake hydrogenase under both oxic and micro-oxic conditions. These findings provide insight into a novel regulatory network between the Mehler-like reaction and diazotrophic metabolism, with implications for future biotechnological applications.
Editorial Material
Biophysics
Anatoly Tsygankov, Galina Riznichenko, Andrew Rubin, Alexei Solovchenko, Valery Tuchin
BIOPHYSICAL REVIEWS
(2022)
Article
Biochemistry & Molecular Biology
Tuukka Leva, Ville Rissanen, Lauri Nikkanen, Vilja Siitonen, Maria Heilala, Josphat Phiri, Thaddeus C. Maloney, Sergey Kosourov, Yagut Allahverdiyeva, Mikko Makela, Tekla Tammelin
Summary: To develop efficient solid-state photosynthetic cell factories for sustainable chemical production, we presented an interdisciplinary experimental toolbox to investigate and interlink the structure, operative stability, and gas transfer properties of alginate- and nanocellulose-based hydrogel matrices with entrapped cyanobacteria. The results showed that nanocellulose matrices have higher yield properties and alginate matrices possess higher rest properties due to their Ca2+-crosslinking. Additionally, porosity and rigidity of the matrices were found to be connected to their gas exchange rates over time.
Article
Chemistry, Multidisciplinary
Vilja Siitonen, Anna Probst, Gabor Toth, Robert Kourist, Michael Schroda, Sergey Kosourov, Yagut Allahverdiyeva
Summary: Green microalgae can convert cyclohexanone into ε-caprolactone while producing hydrogen gas through photosynthesis, offering new opportunities for direct production of solar chemicals.
Article
Chemistry, Physical
Sindhujaa Vajravel, Yagut Allahverdiyeva, Sergey Kosourov
Summary: Photosynthetic H-2 production in Chlamydomonas reinhardtii is hindered by O-2 inhibition and competition with the CBB cycle. Previous research found that applying a train of strong light pulses with dark periods sustained H-2 production for 24 hours. This study demonstrates that continuous low background illumination in combination with strong light pulses can sustain H-2 production for more than 10 days, leading to a 6-fold increase in H-2 yield with the addition of argon and l-cysteine.
SUSTAINABLE ENERGY & FUELS
(2023)
Article
Biotechnology & Applied Microbiology
Gabor Szilveszter Toth, Vilja Siitonen, Lauri Nikkanen, Lucija Sovic, Pauli Kallio, Robert Kourist, Sergey Kosourov, Yagut Allahverdiyeva
Summary: Entrapment of Synechocystis S02 cells in Ca2+-cross-linked alginate hydrogel beads improves specific sucrose productivity, showing promise for sustainable and efficient production of organic compounds.
BIOTECHNOLOGY FOR BIOFUELS AND BIOPRODUCTS
(2022)
Review
Microbiology
M. K. Khasimov, T. V. Laurinavichene, E. P. Petushkova, A. A. Tsygankov
Summary: This review discusses the role of purple sulfur bacteria in global hydrogen and sulfur cycles, along with their ecology and physiology in sulfur and hydrogen metabolism. It provides information on five types of hydrogenases involved in hydrogen consumption or production, as well as various enzymes involved in the oxidation/reduction of sulfur compounds. Advances in the biochemistry and genetics of enzymes from these microorganisms allow for the analysis of interconnected processes at a new level.
Article
Biotechnology & Applied Microbiology
N. A. Zorin, A. N. Khusnutdinova, A. S. Starodubov, I. I. Proskuryakov, A. A. Tsygankov
Summary: The catalytic center of Thiocapsa roseopersicina remains active after treatment with cyanide, and can be restored under certain conditions. The reconstruction of activity depends on time, and substituting isotopes can reduce the required amount.
APPLIED BIOCHEMISTRY AND MICROBIOLOGY
(2021)
Article
Nanoscience & Nanotechnology
Rose-Marie Latonen, Jose Antonio Wrzosek Cabrera, Sara Lund, Sergey Kosourov, Sindhujaa Vajravel, Zhanna Boeva, Xiaoju Wang, Chunlin Xu, Yagut Allahverdiyeva
Summary: Electrically conductive composite nanofibers were successfully fabricated using electrospinning technique with PEDOT-PSS, CNFs, PEO, and poly(ethylene glycol) diglycidyl ether. The fibers exhibited high stability in water and high electrical conductivity, making them suitable for bioelectrochemical applications. The composite fibers were characterized by scanning electron microscopy and showed high electroactivity and stability in water for at least two months, with slight modifications in morphology due to dissolution of PEO.
ACS APPLIED BIO MATERIALS
(2021)