The Experts below are selected from a list of 324 Experts worldwide ranked by ideXlab platform
Yang Hong - One of the best experts on this subject based on the ideXlab platform.
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Physiological Response of Autotrophy and Polyculture Chlorella vulgaris to Salt Stress
Current biotechnology, 2013Co-Authors: Yang HongAbstract:Accumulation of carotenoid,cell protein,polysaccharose and proline in autotrophy or polyculture Chlorella vulgaris as well as its growth characteristics under NaCl stress were studied in this paper.The results indicated that the content of biomass,polysaccharose and MDA for polyculture Chlorella vulgaris was significantly superior to that for autotrophy Chlorella vulgaris,while the content of carotenoid,cell protein and proline content was significantly inferior to that for autotrophy Chlorella vulgaris,which illustrated that autotrophy and polyculture Chlorella vulgaris both had certain resistance to salt stress,but the pattern manifestation to resist salt stress was different between each other.
Luminita Andronic - One of the best experts on this subject based on the ideXlab platform.
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Aquatic Toxicity of Photocatalyst Nanoparticles to Green Microalgae Chlorella vulgaris
Water, 2020Co-Authors: Cristina Adochite, Luminita AndronicAbstract:In the last years, nanoparticles such as TiO2, ZnO, NiO, CuO and Fe2O3 were mainly used in wastewater applications. In addition to the positive aspects concerning using nanoparticles in the advanced oxidation process of wastewater containing pollutants, the impact of these nanoparticles on the environment must also be investigated. The toxicity of nanoparticles is generally investigated by the nanomaterials’ effect on green algae, especially on Chlorella vulgaris. In this review, several aspects are reviewed: the Chlorella vulgaris culture monitoring and growth parameters, the effect of different nanoparticles on Chlorella vulgaris, the toxicity of photocatalyst nanoparticles, and the mechanism of photocatalyst during oxidative stress on the photosynthetic mechanism of Chlorella vulgaris. The Bold basal medium (BBM) is generally recognized as an excellent standard cultivation medium for Chlorella vulgaris in the known environmental conditions such as temperature in the range 20–30 °C and light intensity of around 150 μE·m2·s−1 under a 16/8 h light/dark cycle. The nanoparticles synthesis methods influence the particle size, morphology, density, surface area to generate growth inhibition and further algal deaths at the nanoparticle-dependent concentration. Moreover, the results revealed that nanoparticles caused a more potent inhibitory effect on microalgal growth and severely disrupted algal cells’ membranes.
Cristina Adochite - One of the best experts on this subject based on the ideXlab platform.
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Aquatic Toxicity of Photocatalyst Nanoparticles to Green Microalgae Chlorella vulgaris
Water, 2020Co-Authors: Cristina Adochite, Luminita AndronicAbstract:In the last years, nanoparticles such as TiO2, ZnO, NiO, CuO and Fe2O3 were mainly used in wastewater applications. In addition to the positive aspects concerning using nanoparticles in the advanced oxidation process of wastewater containing pollutants, the impact of these nanoparticles on the environment must also be investigated. The toxicity of nanoparticles is generally investigated by the nanomaterials’ effect on green algae, especially on Chlorella vulgaris. In this review, several aspects are reviewed: the Chlorella vulgaris culture monitoring and growth parameters, the effect of different nanoparticles on Chlorella vulgaris, the toxicity of photocatalyst nanoparticles, and the mechanism of photocatalyst during oxidative stress on the photosynthetic mechanism of Chlorella vulgaris. The Bold basal medium (BBM) is generally recognized as an excellent standard cultivation medium for Chlorella vulgaris in the known environmental conditions such as temperature in the range 20–30 °C and light intensity of around 150 μE·m2·s−1 under a 16/8 h light/dark cycle. The nanoparticles synthesis methods influence the particle size, morphology, density, surface area to generate growth inhibition and further algal deaths at the nanoparticle-dependent concentration. Moreover, the results revealed that nanoparticles caused a more potent inhibitory effect on microalgal growth and severely disrupted algal cells’ membranes.
Radova Popovic - One of the best experts on this subject based on the ideXlab platform.
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inhibitory effects of silver nanoparticles in two green algae Chlorella vulgaris and dunaliella tertiolecta
Ecotoxicology and Environmental Safety, 2012Co-Authors: Abdallah Oukarroum, Francois Perreaul, Radova PopovicAbstract:Freshwater microalga Chlorella vulgaris and marine microalga Dunaliella tertiolecta were used to investigate toxic effects induced by 50 nm silver nanoparticles (AgNPs). To induce AgNPs effect, we exposed Chlorella vulgaris and Dunaliella tertiolecta for 24h to 0-10 mg/L. We showed that growth media had different effects in AgNPs agglomerates' formation. Cellular viability, reactive oxygen species (ROS) formation and lipids peroxidation were employed to assess the toxic effects of AgNPs. AgNPs were able to interact directly with the Chlorella vulgaris cells surface and large aggregates were observed. AgNPs have a negative effect on Chlorella vulgaris and Dunaliella tertiolecta, as manifested by a strong decrease in chlorophyll content, viable algal cells, increased ROS formation and lipids peroxidation. The variability in sensitivity of both algae towards AgNPs was observed. We conclude that AgNPs have a negative effect on aquatic algae and these alterations might have serious consequences on structure and function of aquatic plant communities.
J. Empis - One of the best experts on this subject based on the ideXlab platform.
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Evolution of pigment composition in Chlorella vulgaris
Bioresource Technology, 1996Co-Authors: Luísa Gouveia, V. Veloso, Alberto Reis, Helena Fernandes, Júlio M. Novais, J. EmpisAbstract:The onset of carotenogenesis in Chlorella vulgaris and the change in nature and concentration of pigments with time was studied. The succession of pigments observed was interpreted in terms of relative efficiencies of carotenoid interconversion pathways, and this might be used to monitor the progress of the carotenogenic process. This work is relevant to the use of dry Chlorella biomass, as a naturally encapsulated form of a natural colouring ingredient, in animal feed.