Biohydrogen production by novel cyanobacterial strains isolated from rice paddies in Kazakhstan
Kossalbayev B.D. Kakimova A.B. Bolatkhan K. Zayadan B.K. Sandybayeva S.K. Bozieva A.M. Sadvakasova A.K. Alwasel S. Allakhverdiev S.I.
30 April 2022Elsevier Ltd
International Journal of Hydrogen Energy
2022#47Issue 3716440 - 16453 pp.
A limited supply of oil prompts the search for non-traditional energy sources to replace traditional ones. This makes hydrogen gas an appealing alternative source. Photosynthetic organisms capture sunlight very efficiently and convert it into organic molecules. A promising wild strain was isolated for the first time, from the rice paddies of Kazakhstan (Kyzylorda and Almaty regions), which can be considered as one of the most active hydrogen producers compared to the literature. The result showed that among the 13 isolated and collection cyanobacterial strains, Synechocystis sp. S-1 is the most active H2 producer (2.35 μmol H2 mg−1 Chl a h−1) in the light. In contrast, the wild-type cyanobacterium Anabaena variabilis A-1 had higher productivity, nitrogenase activity, and a stronger capacity to produce hydrogen in the dark (8.67 μmol H2 mg−1 Chl a h−1), which matched the maximum yield obtained in the research. The metabolic modulation performed significantly increased hydrogen production. The highest photohydrogen production rate was observed in cells incubated with 25 μmol HEPES and 50 μmol sodium bicarbonate (NaHCO3).
Biohydrogen productivity , Cyanobacteria , Natural isolates , Nitrogenase , Screening
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Department of Biotechnology, Faculty of Biology and Biotechnology, Al-Farabi Kazakh National University, Al-Farabi 71, Almaty, 050038, Kazakhstan
Geology and Oil-Gas Business Institute Named After K. Turyssov, Satbayev University, Almaty, Kazakhstan
Controlled Photobiosynthesis Laboratory, K.A. Timiryazev Institute of Plant Physiology RAS, Botanicheskaya 35, Moscow, 127276, Russian Federation
College of Science, King Saud University, Riyadh, 12372, Saudi Arabia
Department of Biotechnology
Geology and Oil-Gas Business Institute Named After K. Turyssov
Controlled Photobiosynthesis Laboratory
College of Science
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