Effects of different media composition, light intensity and photoperiod on morphology and physiology of freshwater microalgae Ankistrodesmus falcatus – A potential strain for bio-fuel production

George, Basil; Pancha, Imran; Desai, Chahana; Chokshi, Kaumeel; Paliwal, Chetan; Ghosh, Tonmoy; Mishra, Sandhya

doi:10.1016/j.biortech.2014.08.086

Cited by 233 publications

(112 citation statements)

References 27 publications

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“…A number of strategies have been applied in the past to improve lipid production. [6][7][8] However, nutrients control is considered a key to improving biomass and lipid yield. Rate of nutrients uptake in microalgae is different at different stage of microalgal growth.…”

Section: Introductionmentioning

confidence: 99%

Enhancing Lipid Production of Dunaliella tertiolecta by Manipulating the Interactive Effect of Salinity and Nitrogen

Rizwan

Mujtaba

Rashid

et al. 2017

Chem.Biochem.Eng.Q.

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Low lipid yield is a major bottleneck towards the scale-up application of microalgae for biodiesel production. The focus of this study was to improve the lipid production of Dunaliella tertiolecta (a marine microalga) by altering the concentration of salinity and nitrogen (as nutrients). The unique aspect of this study was to investigate the interactive effect of nitrogen and salinity on lipid production and their correlation with biomass yield and nitrogen uptake. In this experiment, microalgae were grown under various combinations of salinity and nitrogen. At first, lipid production was observed under varied nitrogen concentration (0-75 mg L -1 as NaNO 3 ) and fixed salinity, 37.7 Practical Salinity Unit (PSU). The maximum cell growth rate of 288.4 mg L -1 d -1 and lipid production of 29.3 % were achieved at 75 mg L -1 of NaNO 3 . Now, this concentration of nitrogen was fixed and the effects of salinity concentrations were observed. The lipid production increased to 34 %, and cell growth rate decreased to 201.3 mg L -1 d -1 at 3.77 PSU of salinity. However, further reduction of the nitrogen concentration down to 18.75 mg L -1 of NaNO 3 increased the lipid production to 42 % and decreased biomass to 0.64 g L -1 . It was also found that lipid production was linearly correlated with nitrogen uptake. Microalgae cells consumed all of the nitrogen in the first 24 hours of acclimation; however, lipid yield did not change much over time.

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Section: Introductionmentioning

confidence: 99%

Enhancing Lipid Production of Dunaliella tertiolecta by Manipulating the Interactive Effect of Salinity and Nitrogen

Rizwan

Mujtaba

Rashid

et al. 2017

Chem.Biochem.Eng.Q.

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“…Esto se justifica, ya que la luz es uno de los factores más importantes que influyen en la biosíntesis de la clorofila. Además, los cambios en los niveles de clorofila y ficobilinas son una respuesta de la adaptación de las microalgas a la ausencia y disponibilidad de iluminación [26].…”

Section: Discusionesunclassified

Producción de pigmentos por Aphanothece microscópica Nageli a partir de residuos industriales lácteos

Streit

Ramírez-Mérida

Zepka

et al. 2017

Ingeniare. Rev. chil. ing.

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RESUMENLos sistemas basados en el uso de microalgas para la obtención de bioproductos son considerados un área prometedora para aplicaciones industriales. El objetivo del trabajo fue evaluar la producción de ficobiliproteínas y clorofila-a cuando Aphanothece microscopica Nägeli es cultivada en sistemas autotróficos y heterotróficos. Para ello, se desarrollaron sistemas de cultivos heterotróficos (en ausencia de luz) y autotróficos (2 klux de intensidad luminosa) en biorreactores a pH 7,6, 20 ºC, 1 vvm de aireación, empleando como medios de cultivo un efluente de industria láctea con relación C/N 20 y N/P 10, y BG11. Inóculo inicial 200 mg/L. Se efectuó el monitoreo de concentraciones de clorofila-a y ficobiliproteinas en fase logarítmica y estacionaria. Se observaron las mayores concentraciones de pigmento en la fase logarítmica: mayores concentraciones de clorofila-a en cultivos autotróficos y predominio de aloficocianina y ficoeritrina en cultivos heterotróficos. Los resultados mostraron el efecto de las variables en estudio para la producción de pigmentos, en la fase de crecimiento logarítmico, lo que indica la posibilidad de producir en sistemas heterotróficos de Aphanothece microscopica Nägeli, aproximadamente 3.185 ton/ año de biomasa, para 3.127 kg/año clorofila, 232.825 kg/año ficocianina, 47.775 kg/año aloficocianina y 7.008 kg/año ficoeritrina, cuando se utiliza efluente de industria láctea como medio de cultivo.Palabras clave: Biorrefinería, cianobacterias, clorofila, efluentes lácteos, ficobiliproteína. ABSTRACTThe systems that use microalgae to obtain bioproducts are considered a promising area for industrial applications. The objective of this work was to evaluate the production of phycobiliproteins and chlorophyll-a by Aphanothece microscopica Nägeli, when it is cultivated in autotrophic and heterotrophic systems. Thus, the cultures were grown in heterotrophic (absence of light) and autotrophic (2 klux of light intensity) system, in bioreactors at pH 7.6, 20 ºC, 1 vvm aeration, using a dairy industry effluent, with C/N 20 and N/P 10, and BG11 as

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“…One of the several microalgae that has been evalauted as biofuel feedstock is Ankistrodemus falcatus [7][8][9]. Although, study for it as potential for CCS were limited.…”

Section: Introductionmentioning

confidence: 99%

“…One study reported that A. falcatus grew in a specialized PHM medium able to havecarbon removal rate of 20% utilizing a 2% CO 2 feed gas stream [10]. A. falcatus has reported to contain a lipid of more than 35%, optimal growth length of 0.20 μm and a biomass productivity of 7.9 mg/L-day in a BG-11 medium [8]. Also, it was capable to produce a lipid yield of 67.2%, but it had already undergone a morphology change.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Ankistrodesmus falcatus for Bicarbonate-Based Integrated Carbon Capture System (BICCAPS)

Beltran

Gravador

et al. 2018

MATEC Web Conf.

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Abstract. This study evaluates the performance of alkaliphilic microalgae Ankistrodesmus falcatus in the Bicarbonate-based Integrated Carbon Capture and Algae Production System (BICCAPS). The system utilized bicarbonate as carbon source for microalgae production. BICCAPS parameters such as pH, algal biomass productivity and CO2 utilization (inorganic carbon conversion, Ci) were observed at different sodium bicarbonate (NaHCO3) loading concentration and type of culture media. The highest productivity was observed at 10 g/L of NaHCO3 loading in BRSP medium at 3.5539 mg/L/day. This value is 30% lower compared to the control experiment (continuously aerated bioreactor). The Ci values of the different system ranges from 1.17 x 10 -4 to 1.51 x 10 -4 moles/L/day. Both the pH of the BRSP and NPK media at 10 g/L and 30g/L loading of NaHCO3 increased through time. The result shows that A. falcatus has a potential in BICCAPS utilization.

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Effects of different media composition, light intensity and photoperiod on morphology and physiology of freshwater microalgae Ankistrodesmus falcatus – A potential strain for bio-fuel production

Cited by 233 publications

References 27 publications

Enhancing Lipid Production of Dunaliella tertiolecta by Manipulating the Interactive Effect of Salinity and Nitrogen

Enhancing Lipid Production of Dunaliella tertiolecta by Manipulating the Interactive Effect of Salinity and Nitrogen

Producción de pigmentos por Aphanothece microscópica Nageli a partir de residuos industriales lácteos

Evaluation of Ankistrodesmus falcatus for Bicarbonate-Based Integrated Carbon Capture System (BICCAPS)

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