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https://www.readbyqxmd.com/read/28342577/corrigendum-to-nutrient-recycle-from-defatted-microalgae-aurantiochytrium-with-hydrothermal-treatment-for-microalgae-cultivation-bioresour-technol-228-2017-186-192
#1
Taku Michael Aida, Ryouma Maruta, Yuuhiko Tanabe, Minori Oshima, Toshiyuki Nonaka, Hiroki Kujiraoka, Yasuaki Kumagai, Masaki Ota, Iwane Suzuki, Makoto M Watanabe, Hiroshi Inomata, Richard L Smith
No abstract text is available yet for this article.
March 22, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28342576/biological-co2-mitigation-from-coal-power-plant-by-chlorella-fusca-and-spirulina-sp
#2
Jessica Hartwig Duarte, Etiele Greque de Morais, Elisângela Martha Radmann, Jorge Alberto Vieira Costa
CO2 biofixation by microalgae and cyanobacteria is an environmentally sustainable way to mitigate coal burn gas emissions. In this work the microalga Chlorella fusca LEB 111 and the cyanobacteria Spirulina sp. LEB 18 were cultivated using CO2 from coal flue gas as a carbon source. The intermittent flue gas injection in the cultures enable the cells growth and CO2 biofixation by these microorganisms. The Chlorella fusca isolated from a coal power plant could fix 2.6 times more CO2 than Spirulina sp. The maximum daily CO2 from coal flue gas biofixation was obtained with Chlorella fusca (360...
March 12, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28340452/a-study-of-photosynthetic-biogas-upgrading-based-on-a-high-rate-algal-pond-under-alkaline-conditions-influence-of-the-illumination-regime
#3
Mariana Franco-Morgado, Cynthia Alcántara, Adalberto Noyola, Raúl Muñoz, Armando González-Sánchez
Microalgal-bacterial processes have emerged as environmental friendly systems for the cost-effective treatment of anaerobic effluents such as biogas and nutrients-laden digestates. Environmental parameters such as temperature, irradiation, nutrient concentration and pH effect the performance of the systems. In this paper, the potential of a microalgal-bacterial photobioreactor operated under high pH (≈9.5) and high alkalinity to convert biogas into biomethane was evaluated. The influence of the illumination regime (continuous light supply vs 12h/12h light/dark cycles) on the synthetic biogas upgrading efficiency, biomass productivity and nutrient removal efficiency was assessed in a High-Rate Algal Pond interconnected to a biogas absorption bubble column...
March 20, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28340437/assessment-of-microalga-biofilms-for-simultaneous-remediation-and-biofuel-generation-in-mine-tailings-water
#4
H Palma, E Killoran, M Sheehan, F Berner, K Heimann
Microalgae crops can generate a biochemical profile of high energy density and may be used for remediation of contaminated waste waters. This manuscript presents a laboratory-scale investigation into the potential for growing endemic microalgae biofilms in phosphorus-enriched nickel refinery tailings water, with an emphasis on product potential and the remediation of heavy metals. The dominant species of the consortia was a Chlorella-like microalga. The growth was monitored over time, with a productivity (0...
March 11, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28340433/feasibility-of-carbon-dioxide-sequestration-by-spongiochloris-sp-microalgae-during-petroleum-wastewater-treatment-in-airlift-bioreactor
#5
Abdeldjalil Abid, Faten Saidane, Moktar Hamdi
The aim of this work was to study the ability of using Hydrocabonoclastic native microbial and Spongiochloris sp microalgae in airlift bioreactors couples in order to restore hydrocarbons wastewater and develop the capacity of natural systems to reduce greenhouse effect through maximal control of CO2 gas emission in atmosphere. The kinetic parameters of CO2 gas fixation level and conversion it into biological material by microalgae as the biodegradation process effect in hydrocarbon have been evaluated. The result present that maximum specific growth rate μmax of Spongiochloris sp was (0...
March 10, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28338675/biogeography-and-diversity-of-collodaria-radiolaria-in-the-global-ocean
#6
Tristan Biard, Estelle Bigeard, Stéphane Audic, Julie Poulain, Andres Gutierrez-Rodriguez, Stéphane Pesant, Lars Stemmann, Fabrice Not
Collodaria are heterotrophic marine protists that exist either as large colonies composed of hundreds of cells or as large solitary cells. All described species so far harbour intracellular microalgae as photosymbionts. Although recent environmental diversity surveys based on molecular methods demonstrated their consistently high contribution to planktonic communities and their worldwide occurrence, our understanding of their diversity and biogeography is still very limited. Here we estimated the 18S ribosomal DNA (rDNA) gene copies per collodarian cell for solitary (5770±1960 small subunit (SSU) rDNA copies) and colonial specimens (37 474±17 799 SSU rDNA copies, for each individual cell within a colony) using single-specimen quantitative PCR...
March 24, 2017: ISME Journal
https://www.readbyqxmd.com/read/28336052/does-reef-structure-affect-oyster-food-resources-a-stable-isotope-assessment
#7
Brittany N Blomberg, Benoit Lebreton, Terence A Palmer, Gaël Guillou, Jennifer Beseres Pollack, Paul A Montagna
As ecosystem engineers, oysters create and maintain structured habitat and can influence trophodynamics and benthic-pelagic coupling in the surrounding landscape. The physical reef structure and associated biotic parameters can affect the availability of food resources for oysters. Oysters and potential composite food sources - suspended particulate organic matter (SPOM) and surface sediment organic matter (SSOM) - were assessed using a dual stable isotope (δ(13)C, δ(15)N) approach at three reef types (natural, restored, and unconsolidated) seasonally for two years to determine if changes in physical and/or biotic parameters affected the relative availability and/or use of food resources by oysters...
March 11, 2017: Marine Environmental Research
https://www.readbyqxmd.com/read/28335462/therapeutic-potentials-of-microalgae-in-the-treatment-of-alzheimer-s-disease
#8
REVIEW
Tosin A Olasehinde, Ademola O Olaniran, Anthony I Okoh
Current research is geared towards the discovery of new compounds with strong neuroprotective potential and few or no side effects compared to synthetic drugs. This review focuses on the potentials of extracts and biologically active compounds derived from microalgal biomass for the treatment and management of Alzheimer's disease (AD). Microalgal research has gained much attention recently due to its contribution to the production of renewable fuels and the ability of alga cells to produce several secondary metabolites such as carotenoids, polyphenols, sterols, polyunsaturated fatty acids and polysaccharides...
March 18, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28334665/effect-of-sulfate-ions-on-growth-and-pollutants-removal-of-self-flocculating-microalga-chlorococcum-sp-gd-in-synthetic-municipal-wastewater
#9
Junping Lv, Junyan Guo, Jia Feng, Qi Liu, Shulian Xie
Sulfate is a primary sulfur source and can be available in wastewaters. Nevertheless, effect of sulfate ions on growth and pollutants removal of microalgae seems to be less investigated. At the present study, self-flocculating microalga Chlorococcum sp. GD was grown in synthetic municipal wastewater with different sulfate concentrations. Results indicated that Chlorococcum sp. GD grew better in synthetic municipal wastewater with 18, 45, 77, 136 and 271mg/L SO4(2-) than in wastewater without SO4(2-). Chlorococcum sp...
March 11, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28333392/the-biosynthesis-of-nitrous-oxide-in-the-green-alga-chlamydomonas-reinhardtii
#10
Maxence Plouviez, David Wheeler, Andy Shilton, Michael A Packer, Patricia A McLenachan, Emanuel Sanz-Luque, Francisco Ocaña-Calahorro, Emilio Fernández, Benoit Guieysse
Over the last decades, several studies have reported emissions of nitrous oxide (N2 O) from microalgae cultures and aquatic ecosystems characterized by a high level of algal activity (e.g. eutrophic lakes). As N2 O is a potent greenhouse gas (GHG) and an ozone depleting pollutant, these findings suggest that large scale microalgae cultivation (and possibly, natural eutrophic ecosystems) could have significant environmental impacts. Using the model unicellular microalga Chlamydomonas reinhardtii, this study was conducted to investigate the molecular basis of microalgal N2 O synthesis...
March 23, 2017: Plant Journal: for Cell and Molecular Biology
https://www.readbyqxmd.com/read/28332478/addressed-immobilization-of-biofunctionalized-diatoms-on-electrodes-by-gold-electrodeposition
#11
S Leonardo, D Garibo, M Fernández-Tejedor, C K O'Sullivan, M Campàs
Diatoms are single cell microalgae with a silica shell (frustule), which possess a micro/nanoporous pattern of unparalleled diversity far beyond the possibilities of current micro- and nanofabrication techniques. To explore diatoms as natural three-dimensional nanostructured supports in sensing and biosensing devices, a simple, rapid and stable method to immobilize diatoms via gold electrodeposition is described. In this process, gold microstructures are formed, immobilizing diatoms by entrapment or crossing their nanopores...
March 23, 2017: Biofabrication
https://www.readbyqxmd.com/read/28330202/impact-of-various-media-and-organic-carbon-sources-on-biofuel-production-potential-from-chlorella-spp
#12
Amit Kumar Sharma, Pradeepta Kumar Sahoo, Shailey Singhal, Alok Patel
In this study, five Chlorella species (Chlorella vulgaris, Chlorella minutissima, Chlorella pyrenoidosa, Chlorella sp.1 and Chlorella sp.2) were grown in various nutrient medium including BG-11, BBM, Fog's medium and M4N medium for the evolution of biomass and lipid production potential. Among the tested medium, BG-11 was found most economical and efficient medium for all Chlorella species. To see the impact of organic carbon sources on lipid production potential, all microalgae species were also cultured in selected medium (BG-11) with different organic carbon sources like glucose, glycerol, sodium acetate, and sucrose under mixotrophic condition...
December 2016: 3 Biotech
https://www.readbyqxmd.com/read/28330147/erratum-to-evaluation-of-photosynthetic-efficacy-and-co2-removal-of-microalgae-grown-in-an-enriched-bicarbonate-medium
#13
S Abinandan, S Shanthakumar
No abstract text is available yet for this article.
June 2016: 3 Biotech
https://www.readbyqxmd.com/read/28330109/biomass-production-and-identification-of-suitable-harvesting-technique-for-chlorella-sp-mj-11-11-and-synechocystis-pcc-6803
#14
Amrit Lal, Debabrata Das
Microalgae that can grow fast and convert solar energy into chemical energy efficiently are being considered as a promising feedstock of renewable biofuel. Mass production of microalgal oil faces a number of technical barriers that make the current production of biodiesel economically unfeasible. Small size (≈1-20 μm) and negatively charged surface of the microalgal cells pose difficulties in the process of harvesting. This leads to significant increase in the overall cost of biomass production. The present study explored different methods and conditions for harvesting of Chlorella sp...
June 2016: 3 Biotech
https://www.readbyqxmd.com/read/28330079/evaluation-of-photosynthetic-efficacy-and-co2-removal-of-microalgae-grown-in-an-enriched-bicarbonate-medium
#15
S Abinandan, S Shanthakumar
Bicarbonate species in the aqueous phase is the primary source for CO2 for the growth of microalgae. The potential of carbon dioxide (CO2) fixation by Chlorella pyrenoidosa in enriched bicarbonate medium was evaluated. In the present study, effects of parameters such as pH, sodium bicarbonate concentration and inoculum size were assessed for the removal of CO2 by C. pyrenoidosa under mixotrophic condition. Central composite design tool from response surface methodology was used to validate statistical methods in order to study the influence of these parameters...
June 2016: 3 Biotech
https://www.readbyqxmd.com/read/28328079/intraspecific-chemical-communication-in-microalgae
#16
REVIEW
Marianna Venuleo, John A Raven, Mario Giordano
Contents I. II. III. IV. V. VI. VII. References SUMMARY: The relevance of infochemicals in the relationships between organisms is emerging as a fundamental aspect of aquatic ecology. Exchanges of chemical cues are likely to occur not only between organisms of different species, but also between conspecific individuals. Especially intriguing is the investigation of chemical communication in microalgae, because of the relevance of these organisms for global primary production and their key role in trophic webs...
March 22, 2017: New Phytologist
https://www.readbyqxmd.com/read/28325219/homeopathy-outperforms-antibiotics-treatment-in-juvenile-scallop-argopecten-ventricosus-effects-on-growth-survival-and-immune-response
#17
José Manuel Mazón-Suástegui, Milagro García-Bernal, Pedro Enrique Saucedo, Ángel Campa-Córdova, Fernando Abasolo-Pacheco
BACKGROUND: Mortality from vibriosis in mollusk production is attributed to pathogenic bacteria, particularly Vibrio alginolyticus. Use of increasingly potent antibiotics has led to bacterial resistance and increased pathogenicity. Alternatives in sanitation, safety, and environmental sustainability are currently under analysis. To-date, homeopathy has been investigated in aquaculture of freshwater fish, but not in marine mollusks. The effect of the homeopathic complexes in the growth, survival, and immune response of the Catarina scallop Argopecten ventricosus were assessed...
February 2017: Homeopathy: the Journal of the Faculty of Homeopathy
https://www.readbyqxmd.com/read/28324857/homoagglomeration-and-heteroagglomeration-of-tio2-in-nanoparticle-and-bulk-form-onto-freshwater-and-marine-microalgae
#18
M Sendra, M P Yeste, J M Gatica, I Moreno-Garrido, J Blasco
TiO2 nanoparticles (TiO2 NPs) are employed in many products (paints, personal care products, especially sunscreens, plastics, paper, water potabilization and food products) and are then released into the environment from these products. These nanoparticles present potential risk to freshwater and marine microalgae. The primary toxicity mechanism is adsorption between NPs and microalgae (heteroagglomeration); however, studies of interactions of this kind are scarce. We investigated the heteroagglomeration process that occurs between two forms of TiO2 material, nanoparticles and bulk, and three different microalgae species, and under different environmental conditions (freshwater and marine water), in order to assess the influence of pH and ionic strength (IS)...
March 18, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28321595/enhanced-roles-of-biochar-and-organic-fertilizer-in-microalgae-for-soil-carbon-sink
#19
Shiping Zhang, Liang Wang, Wei Wei, Jiajun Hu, Shouhua Mei, Quanyu Zhao, Yiu Fai Tsang
Improved soil carbon sink capability is important for the mitigation of carbon dioxide emissions and the enhancement of soil productivity. Biochar and organic fertilizer (OF) showed a significant improving effect on microalgae in soil carbon sink capacity, and the ultimate soil total organic carbons with microalgae-OF, microalgae-biochar, microalgae-OF-biochar were about 16, 67 and 58% higher than that with microalgae alone, respectively, indicating that carbon fixation efficiency of microalgae applied in soil was improved with biochar and OF whilst the soil carbon capacity was promoted, the mechanism of which is illustrated through simulative experiments...
March 20, 2017: Biodegradation
https://www.readbyqxmd.com/read/28321229/phycospheric-native-bacteria-pelagibaca-bermudensis-and-stappia-sp-ameliorate-biomass-productivity-of-tetraselmis-striata-kctc1432bp-in-co-cultivation-system-through-mutualistic-interaction
#20
Jungsoo Park, Bum Soo Park, Pengbin Wang, Shailesh K Patidar, Jin Ho Kim, Sae-Hee Kim, Myung-Soo Han
Effective sustainable algal cultivation techniques are essential for mass production of the marine microalga Tetraselmis for biofuel and array of co-products. The phycospheric communities affect the microalgal growth and metabolism through various allelochemical and nutrient interactions; hence, their potential to affect the quantity and quality of both biomass and bioproducts is significant. In the present study, we have screened the phycospheric communities of biofuel producing Tetraselmis striata (KCTC1432BP)...
2017: Frontiers in Plant Science
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