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	Provedor de dados Thai Agricultural (2) Autor Kuson Thomma (1) Lawan Kladsuwan (1) Nalina Hemsanit (1) Pisan Sirithorn (1) Supot Kasem (1) Sutruedee Prathuangwong (1) Waraporn Boonkeat (1) Mais... Palavra-chave Acidovorax avenae (2) Biological control (2) Seed treatment (2) การควบคุมโรคโดยชีววิธี (2) B076 (1) Bacillus subtilis (1) Bacterial antagonist (1) Bacterial fruit blotch (1) Cantaloupe (1) Corn (1) Disease control (1) Formulations (1) Induced resistance (1) Management (1) Physiology of plant disease (1) Plant diseases (1) Plant pathogen (1) Seed coating (1) Spraying (1) การคลุกเมล็ด (1) Mais... Tipo do documento PhysicalObject (1) Ano 2013 (1) 2010 (1) País Thailand (2) Idioma Thailandês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 122 Primeira ... 1 2 3 4 5 6 7 ... Última Growth and biochemical composition of Chlorella vulgaris in different growth media Anais da ABC (AABC) CHIA,MATHIAS A.; LOMBARDI,ANA T.; MELãO,MARIA DA GRAÇA G.. The need for clean and low-cost algae production demands for investigations on algal physiological response under different growth conditions. In this research, we investigated the growth, biomass production and biochemical composition of Chlorella vulgaris using semi-continuous cultures employing three growth media (LC Oligo, Chu 10 and WC media). The highest cell density was obtained in LC Oligo, while the lowest in Chu medium. Chlorophyll a, carbohydrate and protein concentrations and yield were highest in Chu and LC Oligo media. Lipid class analysis showed that hydrocarbons (HC), sterol esthers (SE), free fatty acids (FFA), aliphatic alcohols (ALC), acetone mobile polar lipids (AMPL) and phospholipids (PL) concentrations and yields were highest in the... Tipo: Info:eu-repo/semantics/article Palavras-chave: Carbohydrates; Lipid class; Microalgae; Proteins. Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000401427 Effect of indigo dye effluent on the growth, biomass production and phenotypic plasticity of Scenedesmus quadricauda(Chlorococcales) Anais da ABC (AABC) CHIA,MATHIAS A.; MUSA,RILWAN I.. The effect of indigo dye effluent on the freshwater microalgaScenedesmus quadricauda ABU12 was investigated under controlled laboratory conditions. The microalga was exposed to different concentrations of the effluent obtained by diluting the dye effluent from 100 to 175 times in bold basal medium (BBM). The growth rate of the microalga decreased as indigo dye effluent concentration increased (p <0.05). The EC50 was found to be 166 dilution factor of the effluent. Chlorophyll a, cell density and dry weight production as biomarkers were negatively affected by high indigo dye effluent concentration, their levels were higher at low effluent concentrations (p <0.05). Changes in coenobia size significantly correlated with the dye effluent concentration. A... Tipo: Info:eu-repo/semantics/article Palavras-chave: Freshwater; Microalgae; Morphological variation; Pollution; Textile waste. Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652014000100419 Diet influence on egg production of the copepod Acartia tonsa (Dana, 1896) Anais da ABC (AABC) Teixeira,Priscila F.; Kaminski,Sonia M.; Avila,Tatiana R.; Cardozo,Alessandro P.; Bersano,José G.F.; Bianchini,Adalto. Egg production in the copepod Acartia tonsa was evaluated using different densities of the microalgae Thalassiosira weissflogii, Chaetoceros muelleri and Isochrysis galbana. Male and female were kept under controlled conditions (salinity 30, 20°C, photoperiod 12L:12D), acclimated to the experimental conditions and left over a period of 24 h to allow copulation. Algal densities tested were equivalent in biovolume and corresponded to 0, 2.5, 5, 10, 20, 40 and 60.10³ cells.mL-1 of T weissflogii. Ten acclimated female were separated, transferred to glass bottles and exposed for further 24 h to the corresponding experimental medium. After this period, the eggs were fixed and counted. Copepod egg production reached a threshold value when T weissflogii, C.... Tipo: Info:eu-repo/semantics/article Palavras-chave: Egg production; Acartia tonsa; Microalgae. Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652010000200009 Community structure of microfitobenthos from the central coastal zone of Venezuela Boletín de Investigaciones Pereira,Carlos; De Roa,Evelyn Zoppi; Montiel,Edie; Hernández,Vanessa; Castillo,Anyoelis. ABSTRACT Microphytobenthos is a community that groups benthic photosynthetic microorganisms. In Venezuela and the other countries in the Caribbean Sea, this group has been scarcely studied, so its diversity is unknown. This study aims to describe the spatial and temporal variations of its composition and abundance in the central coastal zone of Venezuela. Samplings were conducted monthly from June 2014 to March 2015, in random stations at depths less than 20 m. Richness and abundance data were processed through multivariate hypothesis tests (Anosim - SIMPER - nMDS). A total of 327 species were identified, with a dominance of diatoms and dinoflagellates, without significant spatial and temporal variations. In terms of abundance, the most representative... Tipo: Info:eu-repo/semantics/article Palavras-chave: Community structure; Marine ecology; Caribbean Sea; Microalgae. Ano: 2022 URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612022000200029 INFLUENCE OF DIFFERENT DIETS ON LENGTH AND BIOMASS PRODUCTION OF BRINE SHRIMP ARTEMIA FRANCISCANA (KELLOG, 1906)A. Boletín de Investigaciones García-Ulloa Gómez,Manuel; Gamboa Delgado,Julián; Zavala Aguirre,José Luis; Ogura Fujii,Tetsuya; Lavens,Patrick. Total length and biomass production of the brine shrimp Artemia franciscana were studied fed on soybean and wheat micropulverized meals (applied alone or mixed at different proportions), live microalgae (Tetraselmis suecica and Chaetoceros calcitrans), and dried Spirulina as diets. Eight diets were tested in triplicates during 10 days. Significant differences (P < 0.05) were observed from day 1 onwards. The mixed meal-based diets showed better production results. At day 1, the Artemia nauplii fed on the 70% wheat meal/ 30% soya meal diet were 30% longer compared to the animals from the C. calcitrans group. At day 10, the organisms fed with the 100% soya meal diet were 68% longer than those fed on the C. calcitrans diet. The final biomass production (wet... Tipo: Info:eu-repo/semantics/article Palavras-chave: Artemia franciscana; Soya meal; Wheat meal; Microalgae; Length; Biomass production. Ano: 1999 URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97611999000100001 Carbon Dioxide Biofixation and Production of Spirulina sp. LEB 18 Biomass with Different Concentrations of NaNO3 and NaCl BABT Moraes,Luiza; Rosa,Gabriel Martins da; Souza,Michele da Rosa Andrade Zimmermann de; Costa,Jorge Alberto Vieira. ABSTRACT Microalgae are efficient at using solar energy to turn CO2 and nutrients into biomass containing lipids, proteins, carbohydrates and other compounds that may be used to produce bioproducts for human and animal consumption and pharmaceutical use. The aim of this study was to assess the effect of the NaNO3 and NaCl concentration on the growth kinetics, the biomass composition and the ability to biofix CO2 using the microalga Spirulina sp. LEB 18. The assays were carried out according to a 22 central composite design (CCD) with different concentrations of NaNO3 (1.25, 1.88 and 2.50 g L-1) and NaCl (1.00, 15.0 and 30.0 g L-1). The assays were carried out in 2 L vertical tubular photobioreactors at 30°C, 12 h light/dark and an injection of 12.0% v/v of... Tipo: Info:eu-repo/semantics/article Palavras-chave: CO2; Fixation; Growth kinetics; Microalgae; Nutrients. Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132018000100410 Harvesting Microalgal Biomass grown in Anaerobic Sewage Treatment Effluent by the Coagulation-Flocculation Method: Effect of pH BABT Cassini,Servio Tulio; Francisco,Sara Aparecida; Antunes,Paulo Wagner Pereira; Oss,Rodrigo Nunes; Keller,Regina. ABSTRACT Harvesting is a critical step in microalgal biomass production process for many reasons. Among the existing techniques available for harvesting and dewatering microalgal biomass, recovery from aqueous medium by coagulation-flocculation has been the most economically viable process, althoughit is highly dependent on pH. This study aims to assess alternative coagulants compared to the standard coagulant aluminum sulfate for microalgal biomass recovery from anaerobic effluent of domestic sewage treatment. The effluent quality was also analyzed after biomass recovery. Coagulants represented by modified tannin, cationic starch and aluminum sulfate recovered more than 90% of algae biomass, at concentrations greater than 80 mg/L, in the pH range 7-10.... Tipo: Info:eu-repo/semantics/article Palavras-chave: Microalgae; Anaerobic effluent; Coagulation-flocculation; PH. Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100700 Uptake of cadmium by Pseudokirchneriella supcapitata BABT Casiraghi,Magela Paula; Luporini,Samuel; Silva,Eduardo Mendes da. In this work the microalgae Pseudokirchneriella supcapitata was used for the removal of the cadmium in liquids. The accumulations of metal ions by the alga occur in two stages: a very fast absorption (passive adsorption) proceeded by a slower absorption (activate absorption). A mathematical model based on the surface absorption and on the transport into the interior of the cellular membrane was developed. The simulation model kinetic parameters were experimentally obtained. Through the results observed, the mathematical model was shown to be suitable when compared to the experimental results, confirming the validation of the mathematical model. Tipo: Info:eu-repo/semantics/article Palavras-chave: Cadmium; Microalgae; Heavy metals; Mathematical model. Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132005000800019 Urban secondary sewage: an alternative medium for the culture of Tetraselmis chuii (Prasinophyceae) and Dunaliella viridis (Chlorophyceae) BABT Costa,Rauquírio André Albuquerque Marinho da; Koening,Maria Luise; Macedo,Sílvio José de. The effect of different concentrations (10, 20, 30 and 40%) of urban secondary sewage on the growth of Tetraselmis chuii (Prasinophyceae) and Dunaliella viridis (Chlorophyceae) was examined to verify the possibility of its use as an alternative culture medium for these species. Stocks and 700mL duplicate batch cultures were maintained under controlled laboratory conditions. 30% and 40% additions were the most efficient for the growth of both species. Statistical analysis of the adjusted growth (cell.mL-1) and biomass (µg chlorophyll-a.mL-1) curves performed using the Chi-square test (p<0.05) demonstrated significant differences between the nutritive medium f/2 and the 40% addition used for these two species. The results suggested that some of the... Tipo: Info:eu-repo/semantics/article Palavras-chave: Microalgae; Culture; Urban secondary sewage; Alternative medium. Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132004000300016 Cultivation of Nannochloropsis sp. in brackish groundwater supplemented with municipal wastewater as a nutrient source BABT Sousa,Louise Lins de; Hora,Dominique Silveira da; Sales,Emerson Andrade; Perelo,Louisa Wessels. The aim of this work was to study growth potential of the green microalgae Nannochloropsis sp. using brackish groundwater from a well in the semi-arid northeast region of Brazil as culture medium. The medium was supplemented with (%) 19.4, 22.0, 44.0 and 50.0% of municipal wastewater after UASB treatment as a low-cost nutrient source. The results showed that the culture tested was capable of growing in the brackish groundwater even at salinity levels as low as 2 ppt. Furthermore it was shown that municipal wastewater could be used as a sole nutrient source for Nannochloropsis sp. Tipo: Info:eu-repo/semantics/article Palavras-chave: Microalgae; Brackish groundwater; Municipal wastewater; Nannochloropsis sp. Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132014000200003 Growth of microalgae Scenedesmus sp in ethanol vinasse BABT Ramirez,Nelzy Neyza Vargas; Farenzena,Marcelo; Trierweiler,Jorge Otávio. This study evaluated the feasibility of using vinasse as a nutrient source for microalgae cultivation. The Scenedesmus sp was grown in a medium supplemented with vinasse and process variables were optimized using a factorial design and a Central Composite Design (CCD). The factorial design results showed that it was possible to cultivate microalgae at concentrations of up to 40% of vinasse in the culture medium. The CCD results showed that the light intensity and vinasse concentration influenced the amount of biomass produced. Tipo: Info:eu-repo/semantics/article Palavras-chave: Vinasse; Microalgae; Scenedesmussp; Photobioreactor air-lift. Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132014000500630 Evaluation of CO2 Biofixation and Biodiesel Production by Spirulina (Arthospira) Cultivated In Air-Lift Photobioreactor BABT Morais,Etiele Greque de; Cassuriaga,Ana Paula Aguiar; Callejas,Nicolás; Martinez,Natalia; Vieitez,Ignacio; Jachmanián,Iván; Santos,Lucielen Oliveira; Morais,Michele Greque de; Costa,Jorge Alberto Vieira. ABSTRACT Spirulina is a microalgal genre that has the capacity to produce various bioproducts with applications in several areas including the energy sector. The study aimed to assess the ability of CO2 biofixation, biodiesel and other biocompounds production by Spirulina sp LEB 18 cultured in air-lift photobioreactor. The microalgae presented a rich macronutrient composition: protein (47.3%), carbohydrates (13.4%) and a high lipid content (32.7%) in a media with nitrogen reduction, CO2 using air-lift photobiorector. Furthermore, 160 mg.L.d-1 of CO2 was biofixed, generating a maximum biomass yield of 0.02 g.L.d-1. The lipids evaluated for biodiesel production presented a theoretical yield of 19.8% for in situ transesterification and 47.9% for conventional... Tipo: Info:eu-repo/semantics/article Palavras-chave: Biofuels; Carbon dioxide; Microalgae; Photobiorefinary; Biocompounds. Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132018000100703 Use of Solid Waste from Thermoelectric Plants for the Cultivation of Microalgae BABT Vaz,Bruna da Silva; Costa,Jorge Alberto Vieira; Morais,Michele Greque. ABSTRACT The aim of this study was to analyze the influence of solid waste on the cultivation of the microalgae Spirulina sp. LEB 18 and Chlorella fusca LEB 111 with 0, 40, 80 and 120 ppm of mineral coal ash. The addition of the ash did not inhibit the cultivation of microalgae at the tested concentrations, showing that it could be used for the cultivation of these microalgae due to the minerals present in the ash, which might substitute the nutrients needed for their growth. Tipo: Info:eu-repo/semantics/article Palavras-chave: Ashes; Chlorella fusca LEB 111; Microalgae; Mineral coal; Spirulina sp. LEB 18. Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132016000100200 Microalgae: Cultivation Aspects and Bioactive Compounds BABT Coêlho,Diego de Freitas; Tundisi,Louise Lacalendola; Cerqueira,Keilla Santos; Rodrigues,Jacqueline Rego da Silva; Mazzola,Priscila Gava; Tambourgi,Elias Basile; Souza,Roberto Rodrigues de. Abstract Microalgae are aquatic unicellular microorganisms that can be found both in freshwater and marine systems; are capable of photosynthesis; and can grow as individual cells or associated in chains or small colonies. Microalgae cultivation has gained large momentum among researchers in the past decades due to their ability to produce value metabolites, remarkable photosynthetic efficiency, and versatile nature. The wide technological potential, and thus increasing amount of scattered knowledge, may become the very first barrier that a post graduating student, or any non-specialist reader, will face when introduced to the subject. In this review paper, we access the core aspects of microalgae technology, covering their main characteristics, and... Tipo: Info:eu-repo/semantics/article Palavras-chave: Microalgae; Microalgae Selection and Isolation; Green Products; Microalgae Cultivation; Bioactive Compounds. Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132019000101000 Bioethanol from Microalgal Biomass: A Promising Approach in Biorefinery BABT Silva,Carlos Eduardo de Farias; Bertucco,Alberto. Abstract The development of new technologies which increase the production of biofuel without directly compete with food production is required. Microalgal biomass has recently been in the highlight. The role of this biomass is here discussed within the concept of biorefinery and industrial sustainability of bioethanol production. The process of cultivation in order to accumulate around 50% of carbohydrates in the biomass (dry weight) and the importance of water and nutrient recycling are reviewed. Saccharification of biomass using enzymes or acids and alternative processes such as hydrothermal liquefaction and flash hydrolysis are addressed. Since the main monosaccharide in microalgal biomass is glucose, high rates of hydrolysis and fermentation were,... Tipo: Info:eu-repo/semantics/article Palavras-chave: Ethanol; Microalgae; Biofuel; Hydrolysis; Nutrient recycle. Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132019000100602 Periwinkle (Gastropoda: Littorinidae) habitat selection and its impact upon microalgal populations BJB APOLINÁRIO,M.; COUTINHO,R.; BAETA-NEVES,M. H.. The present study examines habitat selection and grazing pressure of the periwinkle Nodilittorina lineolata (Gmelin, 1791) on the rocky shore of Arraial do Cabo, RJ, Brazil (lat. 23°S, long. 43°W). Transfer experiments suggest that periwinkles actively select the mid intertidal, where the cirripede Chthamalus bisinuatus Pilsbry is the dominant sessile invertebrate. We also conducted a caging experiment in the middle intertidal, manipulating grazers and light, to assess the impact of grazing upon microalgal density. Grazing pressure significantly reduced microalgal abundance at the mid-intertidal level, suggesting that food availability plays an important role in the habitat selection of periwinkles on the studied shore. Tipo: Info:eu-repo/semantics/article Palavras-chave: Brazil; Habitat selection; Intertidal; Littorinidae; Microalgae. Ano: 1999 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0034-71081999000200005 Phytoplankton community of a polymictic reservoir, La Plata River basin, Uruguay BJB PÉREZ,M. C.; BONILLA,S.; MARTÍNEZ,G.. This paper deals with the analysis of phytoplankton composition and abundance from four sampling stations at the polymictic system, Rincón del Bonete water reservoir in Uruguay. Sampling data were obtained in 4 seasonal periods between February and November 1993. A hundred and twenty-four taxa were identified, where Aulacoseira granulata (Ehrenb.) Simon., A. granulata var. angustissima (Muller) Simon., A. granulata var. angustissima f. spiralis, (Muller) Simon., A. cf. ambigua, (Grun.) Simon., A. cf.. distans (Ehrenb.) Simon., Cryptomonas spp. and Synedra ulna (Nitzsch) Ehrenberg, were always present. Phytoplankton abundance fluctuated between 29 (autumn) and 2129 (summer) ind/ml. The general dominance of Aulacoseira spp. could be related to the polymictic... Tipo: Info:eu-repo/semantics/article Palavras-chave: Microalgae; Freshwater; Artificial lakes; Aulacoseira; Uruguay. Ano: 1999 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0034-71081999000400002 Microalgae population dynamics in photobioreactors with secondary sewage effluent as culture medium BJM Marchello,Adriano E.; Lombardi,Ana T.; Dellamano-Oliveira,Maria José; Souza,Clovis W.O. de. Nitrogen and phosphorus present in sewage can be used for microalgae growth, possibiliting cost reduction in the production of microalgae at the same time that it decreases the eutrophication potential of the effluent. This research aimed at monitoring the native community of microalgae and coliform bacteria in a secondary effluent from anaerobic municipal sewage treatment. Two treatments (aerated and non-aerated) were performed to grow microalgae under semi-controlled conditions in semi-closed photobioreactors in a greenhouse. The results showed no significant pH and coliforms (total and Escherichia coli) variation between treatments. Nutrient concentrations were reduced supporting microalgae growth up to 107 cells.mL−1independent of aeration. Exponential... Tipo: Info:eu-repo/semantics/article Palavras-chave: Microalgae; Effluent treatment; Coliforms; Escherichia coli; Chlorella vulgaris. Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822015000100075 Nitrogen-deficient microalgae are rich in cell-surface mannose: potential implications for prey biorecognition by phagotrophic protozoa BJM Martel,Claire M.. Flow cytometry was used to quantify the abundance of mannose-linked glycoconjugates on microalgae precultured using low- or high-nitrate media. Nitrogen-deficient microalgae were richer in cell-surface mannose than nitrogen-sufficient. Findings are discussed in view of recent research which reveals mannose-specific 'feeding receptors' assist prey biorecognition by phagotrophic protozoa that ingest microalgae. Tipo: Info:eu-repo/semantics/article Palavras-chave: Microalgae; Biorecognition; Phagotrophic protozoa; Mannose. Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822009000100014 Enhancement of pigment extraction from B. braunii pretreated using CO2 rapid depressurization BJM Uquiche,Edgar; Antilaf,Ivette; Millao,Sonia. Abstract Extraction of compounds from microalgae requires cell disruption as a pretreatment to increase extraction yield. Botryococcus braunii is a microalga with a significant content of carotenoids and other antioxidant compounds, such as chlorophylls. Cell disruption of B. braunii using CO2 rapid depressurization was studied as a pretreatment for the extraction of carotenoid and chlorophyll pigments. We studied the effect of temperature (21–49 °C) and pressure (6–13 MPa) during static compression on pigment recovery with supercritical CO2 at 40 °C, 30 MPa and solvent flow of 4.7 L NPT/min. Within the experimental region, the extraction yield of carotenoids and chlorophylls increased by 2.4- and 2.2-fold respectively. Static compression conditions of... Tipo: Info:eu-repo/semantics/article Palavras-chave: Botryococcus braunii; Cell disruption; Chlorophylls; Microalgae; Supercritical extraction. Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822016000200497 Registros recuperados: 122 Primeira ... 1 2 3 4 5 6 7 ... Última

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