The optimization of biomass and lipid yields of Chlorella sorokiniana when using wastewater supplemented with different nitrogen sources

Ramanna, Luveshan; Guldhe, Abhishek; Rawat, Ismail; Bux, Faizal

doi:10.1016/j.biortech.2014.03.064

Cited by 171 publications

(88 citation statements)

References 25 publications

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“…Although microalgae can grow over wide pH, the growth is species dependent. The findings were in correlation with previous studies where ammonium resulted in lesser growth [17,18].…”

Section: Resultssupporting

confidence: 92%

“…Various nitrogen sources such as ammonia, nitrate, nitrite, and urea, can be used to cultivate microalgae. Urea [18,26], ammonium [27,28], nitrite [29]and nitrate [30] were found to produce highest biomass and lipid production in various Chlorella species. Whereas, nitrate was found as the best nitrogen source for both growth and lipid production in other microalgae [31][32][33][34][35][36].…”

Section: Resultsmentioning

confidence: 99%

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Responses in Growth and Lipid Productivity of ChlorellaVulgaris to Different Nitrogen Sources

Kumar¹,

Gopal²,

Harinath³

et al. 2017

SOJMID

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“…Although microalgae can grow over wide pH, the growth is species dependent. The findings were in correlation with previous studies where ammonium resulted in lesser growth [17,18].…”

Section: Resultssupporting

confidence: 92%

Section: Resultsmentioning

confidence: 99%

Responses in Growth and Lipid Productivity of ChlorellaVulgaris to Different Nitrogen Sources

Kumar¹,

Gopal²,

Harinath³

et al. 2017

SOJMID

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“…Effects of different types of carbon and nitrogen sources and their concentrations on biomass from certain species of Chlorella have been investigated previously (Gautam et al, 2013;Cerón-García et al, 2013;Ramanna et al, 2014). Therefore, to obtain higher biomass, it is important to find appropriate types of carbon and nitrogen sources and their optimum concentrations in growth medium of C. vulgaris which is a promising microalga to be used as a source of biomass.…”

Section: Introductionmentioning

confidence: 99%

1 EVALUATION OF Chlorella vulgaris PRODUCTION AS FUCTION OF GLYCEROL AND CORN STEEP LIQUOR CONCENTRATION USING FACTORIAL DESIGN

Silva¹,

Souza²,

Marques³

et al. 2015

Anais Do XX Congresso Brasileiro De Engenharia Química

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RESUMO -Microalgae are potential sources of high value chemicals and bioactive compounds. To promote the cell productivity, culture conditions such as carbon and nitrogen sources, irradiance, temperature, bioreactor design have been investigated. Under mixotrophic conditions, some microalgae grows rapidly and to have a higher growth rate when compared to photoautotrophic conditions. This works reports Chlorella vulgaris production under mixotrophic conditions using glycerol and corn steep licor. The factorial design (2 2 plus star central) was performed with 0.5-1.5% gycerol (C gly ) and 0.5-1.5% corn steep liquor (C csl ) using maximum cell concentration (X m ), cell productivity (P X ) as response. Results from the response surface methodology were that the X m of 1.52 g L -1 was obtained using 0.9 % of G and 1.2 % of CSL. The highest P X value was 232 mg L -1 day -1 with 1.5% of G and CSL. Therefore, these models can be useful to predict maximum cell concentration in mixotrophic cultures.

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“…Secondly, WS-E75S samples are reasonably expected to contain small molecules such as nucleotides, monosaccharides, unsaturated (omega-3) fatty acids or derivatives originating from their parent extracts (C. sorokiniana and C. pyrenoidosa) with known related compositions. 5,13,14,16 Thirdly, the above standard spectra and documented UV spectra. 13,[26][27][28][29][30] conclude that λ max values are generally Accordingly, the compounds 1-4 and 6 were likely nucleic acids (λ max :210-220 and 260nm) and analogues with ethylene chromophores (λ max :196198nm).…”

Section: Characterization Of 75% Ethanol-soluble Phytocompoundsmentioning

confidence: 99%

“…12 Recently, research focuses have been on new combined processes and condition optimization for producing high value products from both Chlorella biomass and residues, 1 e.g. immunomodulator glycoproteins or polysaccharides, 13,14 antioxidant ingredients, 15 glycosidase inhibitors [personnel communications], polyunsaturated (-3) fatty acids, 16 lutein, carotenoids, hydrogen, 1 and bioethanol.…”

Section: 7mentioning

confidence: 99%

Optimizing Extraction Process and Characterization of Antioxidant Ingredients from Chlorella Sorokiniana

Lai¹

2017

MOJFPT

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This study was to investigate optimized extraction conditions for Chlorella sorokiniana (C. sorokiniana) water extracts with antioxidant functionality and potential key compounds involved. A 2-factor, 5-level response surface methodology was employed using extraction temperature (40-100°C) and time (0.5-6h) as factors. It is indicated that, among the C. sorokiniana extracts examined, the maximal value in yield was 18.0% (w/w) on biomass basis; in 75% ethanol solubility of water extract (WS-E75S%, the potentially major antioxidant fraction), 38.0% (w/w) on extract basis; in total phenolic content (TPC), 3.17 GAEmg/g on extract basis. The highest antioxidant activities were shown by a 50% DPPH scavenging concentration (SC50)=7.36mg/ mL, 50% Fe2+ chelating concentration (CC50,)=10.4mg/mL, and reducing power increment per unit concentration=0.044mL/mg. By statistical analysis with RSREG program, the obtained polynomials for yield, WS-E75S%, SC50 and CC50 as a function of temperature and time could explain 78.9-82.2% of data variations. An optimal extraction condition was concluded at 100°C for 1h, to give high values in all yield, WS-E75S%, and antioxidant activities (i.e. low SC50 and CC50 values). In WS-E75S, the major compositions were likely nucleic acids and their analogues with ethylene structure, accompanying with detectable amounts of possibly polyunsaturated fatty acids, fatty alcohols, or phytols with acyl dienes, buta-1, 3-diene or ethylene structure. Besides these Phytochemicals, the water extract contained carbohydrates of mainly glucose and ribose (52.4 and 25.9mol%, respectively), followed by galactose and rhamnose, and two molecular fractions. Conclusively, Chlorella water extract at optimally 100 °C for 1h could yield~18% (w/w), contain WS-E75S~37% (w/w) and have statistically predicted SC50 ~3.0mg/mL and CC50 ~11mg/mL.

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The optimization of biomass and lipid yields of Chlorella sorokiniana when using wastewater supplemented with different nitrogen sources

Cited by 171 publications

References 25 publications

Responses in Growth and Lipid Productivity of ChlorellaVulgaris to Different Nitrogen Sources

Responses in Growth and Lipid Productivity of ChlorellaVulgaris to Different Nitrogen Sources

1 EVALUATION OF Chlorella vulgaris PRODUCTION AS FUCTION OF GLYCEROL AND CORN STEEP LIQUOR CONCENTRATION USING FACTORIAL DESIGN

Optimizing Extraction Process and Characterization of Antioxidant Ingredients from Chlorella Sorokiniana

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