Journal of Hazardous Materials, Год журнала: 2024, Номер 486, С. 136971 - 136971
Опубликована: Дек. 25, 2024
Язык: Английский
Frontiers in Marine Science, Год журнала: 2024, Номер 11
Опубликована: Март 18, 2024
This study investigated the effects of levofloxacin (LEV) and norfloxacin (NOR) on Skeletonema costatum , focusing cell growth, chlorophyll a (Chla) content, maximal quantum yield PSII ( Fv/Fm ), protein enzyme activities superoxide dismutase (SOD), glutathione reductase (GR), peroxidase (GSH-PX), membrane lipid peroxidation product malondialdehyde (MDA) content were conducted to analyze responses S. under LEV NOR exposure. Cell Chla activities, MDA assessed elucidate physiological changes. Both inhibited except for 10 mg/L NOR, which promoted growth. Algal cells exhibited higher sensitivity LEV, with 96h-IC50 values 14.770 44.250 NOR. Low concentration (10 mg/L) increased while high antibiotic concentrations (>20 >100 NOR) decreased indicating an impact photosynthesis. Elevated levels reduced but GR, SOD, GSH induced oxidative stress. The provides comprehensive analysis marine microalgae growth underlying mechanisms, shedding light potential ecological risks posed by antibiotics in ecosystems.
Язык: Английский
Процитировано
3
Frontiers in Bioscience-Landmark, Год журнала: 2023, Номер 28(10)
Опубликована: Окт. 25, 2023
Background: The intensive and injudicious use of pesticides in agriculture has emerged as a major concern due to its detrimental impact on aquatic ecosystems. However, the specific broad-spectrum fungicides, such Thiophanate-methyl (TM), cyanobacteria remains subject ongoing research debate. Methods: In order fill this knowledge gap, present study aimed comprehensively investigate toxicological effects TM (10–30 µg/L) growth, photosynthetic pigments, oxidative stress, biochemical composition non-nitrogen-fixing cyanobacterium Arthrospira platensis. Results: Our findings unequivocally demonstrated that exposure significantly inhibited growth A. Moreover, decrease chlorophyll content indicated pronounced negative system platensis caused by exposure. Notably, induced stress platensis, substantiated significant increase lipid peroxidation (MDA) within culture. Furthermore, intracellular generation hydrogen peroxide (H2O2) exhibited positive correlation with higher dosages, while levels vital antioxidant enzymes, catalase (CAT) ascorbate peroxidase (APX), discernible decrease. This suggests compromises defense mechanisms Additionally, was found enhance activity plethora enzymes involved detoxification pesticides, including (POD) glutathione-S-transferase (GST), thereby indicating robust response Interestingly, resulted general suppression biocomponent production, total proteins carbohydrates, which diminishing trend increasing concentration. Conversely, witnessed increase, possibly an adaptive TM-induced stress. Conclusions: These contribute deeper understanding ecological implications pesticide usage emphasize urgent need for adoption sustainable environmentally-friendly agricultural practices safeguard
Язык: Английский
Процитировано
8
Process Safety and Environmental Protection, Год журнала: 2023, Номер 182, С. 1110 - 1120
Опубликована: Дек. 27, 2023
Язык: Английский
Процитировано
7
Separation and Purification Technology, Год журнала: 2024, Номер 354, С. 129168 - 129168
Опубликована: Авг. 12, 2024
Язык: Английский
Процитировано
2
Environmental Research, Год журнала: 2024, Номер unknown, С. 119986 - 119986
Опубликована: Сен. 1, 2024
Язык: Английский
Процитировано
2
Toxics, Год журнала: 2022, Номер 10(12), С. 739 - 739
Опубликована: Ноя. 29, 2022
Antibiotics in aqueous environments can have extremely adverse effects on non-targeted organisms. However, many research projects only focused the toxicological evaluation of individual antibiotics various environments. In present work, and binary mixture toxicity experiments been conducted with model organism Raphidocelis subcapitata (R. subcapitata), a concentration-response curve was established contrasted estimated basis both concentration addition (CA) independent action (IA) models. addition, different risk assessment methods were used compared to evaluate environmental mixtures. The toxic ranking selected R. erythromycin (ERY) > sulfamethoxazole (SMX) sulfamethazine (SMZ). general, conclusion this study is that mixtures are higher than antibiotics. CA RQSTU more suitable for prediction This reveals potential ecological risks their may pose water ecosystems, thus providing scientific information quality regulation.
Язык: Английский
Процитировано
9
CleanMat., Год журнала: 2024, Номер unknown
Опубликована: Ноя. 26, 2024
ABSTRACT Sulfamethoxazole (SMX) is an antibiotic widely used for the treatment of several diseases, especially respiratory and urinary. Due to its widespread use, presence in environment has been on rise. This study discusses degradation SMX through ozonation process. preferentially degraded by direct action O 3 molecule, starting breaking double bonds aromatic ring. Through it possible obtain complete within 10 min, but mineralization solution not achieved, reaching total organic carbon removal efficiencies 5%–60%, depending reaction time. Factors such as matter (OM) pH interfere with SMX. The OM acts a radical scavenger, decreasing efficiency degradation, while interferes decomposition into radicals dissolution oxidant medium, addition influencing state ionization making more or less prone reactions. In general, most other remediation processes are carried out laboratory scale. To increase level these full scale, pilot‐scale studies needed. addition, necessary focus practice reusing materials, avoiding generation secondary pollution, increasing useful life material. review also mechanisms, intermediate compounds formed, solution, factors that influence process, which can help decisions future be area. Prospects research area revolve around using metal–organic frameworks molecular imprinting technology modify heterogeneous catalysts, integration external energy, bimetallic systems, evaluation deactivation mechanisms.
Язык: Английский
Процитировано
1
BioEnergy Research, Год журнала: 2023, Номер 16(4), С. 2450 - 2464
Опубликована: Май 13, 2023
Язык: Английский
Процитировано
2
ACS Sustainable Chemistry & Engineering, Год журнала: 2023, Номер 12(1), С. 130 - 140
Опубликована: Дек. 18, 2023
Microalgal cultivation with wastewater can recover nutrients and high value-added products. However, biomass accumulation physiological responses of microalgae under different organic phosphorus (OP) forms have rarely been explored. In this study, the effects three OP forms, including adenosine triphosphate (ATP), glucose-6-phosphate (G-6-P), β-glycerol phosphate (β-GP), on Chlorella pyrenoidosa growth, biochemical composition, morphological characteristic, photosynthesis, cell viability concentrations were investigated. Results showed that except for negative effect 250 mg-P/L ATP, all contributed to microalgal maximal algal density 2.5 × 107 cells/mL β-GP. Particularly, 50 ATP phosphomonoesters (G-6-P β-GP) could significantly promote carbohydrate, protein, chlorophyll accumulation. Both low concentration ATP/β-GP G-6-P suitable lipid production. Compared microscopic imaging, flow cytometry quantitatively confirmed expanded size destroyed membrane integrity, while β-GP increased proportion pigment cells. Increasing weakened photosystem-II photochemical activity. Higher esterase activity addition enhanced viability. This result provides better guidance directional enrichment energy storage materials in wastewater.
Язык: Английский
Процитировано
2
Опубликована: Янв. 1, 2024
Язык: Английский
Процитировано
0