Removal of endocrine disruptor compounds, CO 2 fixation, and macromolecules accumulation in Thermosynechococcus sp. CL-1 cultivation.

Autor: Narindri Rara Winayu B; Department of Environmental Engineering, National Cheng Kung University, Tainan 701, Taiwan., Cheng HF; Department of Environmental Engineering, National Cheng Kung University, Tainan 701, Taiwan., Hsueh HT; Sustainable Environment Research Center, National Cheng Kung University, Tainan 701, Taiwan., Chu H; Department of Environmental Engineering, National Cheng Kung University, Tainan 701, Taiwan. Electronic address: chuhsin@mail.ncku.edu.tw.
Jazyk: angličtina
Zdroj: Journal of biotechnology [J Biotechnol] 2023 Aug 20; Vol. 373, pp. 1-11. Date of Electronic Publication: 2023 Jun 15.
DOI: 10.1016/j.jbiotec.2023.06.004
Abstrakt: Recently, concern on several environmental issues including the pollutant discharge and high concentration of CO 2 have gained high interest due to its impact on ecosystem and global warming effect, respectively. Implementation of photosynthetic microorganism carries out numerous advantages including high efficiency of CO 2 fixation, the great endurance under extreme conditions and generation of valuable bioproducts. Thermosynechococcus sp. CL-1 (TCL-1), a cyanobacterium, has the ability to perform CO 2 fixation and accumulation of various byproducts under extreme conditions like high temperature and alkalinity, presence of estrogen, or even using swine wastewater. This study aimed to assess TCL-1 performance under various endocrine disruptor compounds (bisphenol-A, 17-β-estradiol/E2, and 17-α-ethynilestradiol/EE2), concentrations (0-10 mg/L), light intensities (500-2000 µE/m 2 /s), and dissolved inorganic carbon/DIC levels (0-113.2 mM). Addition of E2 content even until 10 mg/L carried out insignificant biomass growth interruption along with the improvement in CO 2 fixation rate (79.8 ± 0.1 mg/L/h). Besides the influence of E2, application of higher DIC level and light intensity also enhanced the CO 2 fixation rate and biomass growth. The highest biodegradation of E2 at 71% was achieved by TCL-1 in the end of 12 h cultivation period. TCL-1 dominantly produced protein (46.7% ± 0.2%), however, production of lipid and carbohydrate (39.5 ± 1.5 and 23.3 ± 0.9%, respectively) also could be considered as the potential source for biofuel production. Thus, this study can provide an efficient strategy in simultaneously dealing with environmental issues with side advantage in production of macromolecules.
Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2023 Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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