Phototrophic culture of Chlorella sp. using charcoal ash as an inorganic nutrient source

Sandoval, A R María; Flores, Florita; Narváez, A C Ricardo; López-Villada, Jesús

doi:10.1016/j.algal.2015.07.008

Cited by 10 publications

(2 citation statements)

References 36 publications

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“…As also shown in Figure 3, ash content varied in a wide range, from 8.4% to 70%, with maximum value observed by using LC: 10%, GP: 15%, AF: 0,15 vvm and FR: 0.7µmax. It is known that the ash content refers directly to mineral salts and other components whose boiling temperature is very high, as is the case of metals [62][63][64][65], and the values in biomass can vary with species of microalgae, culture conditions, high metallic load present in the leachate [66]. In the work developed by Xu et al [67], the ash content of the microalgae Chlorella sp was reported as 16.06% after analysis by four hours of heating at 550 ° C. That value was close to those found in experiments 2 and 7 of Figure 3.…”

Section: Resultsmentioning

confidence: 99%

Effects of Process Variables in Semi-continuous Cultivation of Chlorella Minutissima on the Biomass Composition

Tagliaferro

Santos

et al. 2021

Preprint

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The biomass composition of Chlorella minutissima 26a was evaluated in different conditions for the microalgae cultured in landfill leachate in airlift photobioreactor operated in semi-continuous mode. The effects of the following factors in cells composition were evaluated: landfill leachate concentration (LC), CO2 percentual flow added in the gas stream (GP), aeration flow in the reactor (AF) and feed flowrate (FR). A Taguchi L9 orthogonal arrangement was used to evaluate the effects of those four factors on the following response variables: Biomass Productivity (BP), Lipid Productivity (LP), Carbohydrate Productivity (CP) and Proteins Productivity (PP). Results showed that the microalgae had high selectivity to produce proteins, reaching a maximum content of 69,60% in the following conditions: LC: 10%, GP: null, AF: 0,30 vvm and FR: 0.9 µmax vvm. The highest contents of lipid and carbohydrate were 17.4% (LC: 15%, GP: null, AF: 0,45 vvm and FR: 0.7 µmax vvm) and 11.6% (LC: 10%, GP: 15%, AF: 0,15 vvm and FR: 0.7 µmax vvm.), respectively, both values achieved at the two experiment with the highest values of specific growth rate (0.44 d-1 and 0.47 d-1, respectively). Statistical analysis showed LC was the most influential factor in the cell chemical composition, being significant (p<0,1) in the productivity of lipids, proteins and carbohydrates, with high values observed using between 5 and 10% of LC in the medium. GP did not show significance for any response studied, while the variables AF and FR showed significance in the productivity of proteins.

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Section: Resultsmentioning

confidence: 99%

Effects of Process Variables in Semi-continuous Cultivation of Chlorella Minutissima on the Biomass Composition

Tagliaferro

Santos

et al. 2021

Preprint

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“…The freshwater algae Chlorella sorokiniana Shirira et Krauss was provided by Ugo Plankton Laboratory which is located in Purworejo, Central Java. It was grown in axenic conditions at 23°C, under continuous illumination (1200 µmol m -2 s -1 light intensity), and in Guillard F/2 medium (Sandoval et al 2015). Guillard F/2 medium consists of macronutrients (NaH2PO4.H2O), micronutrients (FeCl3.…”

Section: Culture Condition and Experimental Designmentioning

confidence: 99%

Integrated assessment of biomarker responses in algae Chlorella sorokiniana exposed to copper and cadmium

rahayu

Nugroho

2020

Biodiversitas

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Abstract. Rahayu TH, Nugroho AP. 2020. Integrated assessment of biomarker responses in algae Chlorella sorokiniana exposed to copper and cadmium. Biodiversitas 21: 3569-3575. Microalgae Chorella as a major producer in aquatic ecosystems has high probability ofth being exposed to metal pollutants. Metal exposure to algae can induce the formation of reactive oxygen species (ROS), leading to oxidative stress states. ROS trigger the responses of biomarkers of antioxidative enzymes, including superoxide dismutase (SOD), catalase (CAT), and ascorbate peroxidase (APX). This study aims to develop an integrated biomarker response index and star plot for interpretation of the antioxidative enzyme responses in Chlorella sorokiniana. The microalgae was exposed to three concentrations of copper (Cu) and cadmium (Cd) for 48 h, respectively. The results showed that exposure to Cu and Cd caused an increase of protein content and activities of SOD and APX. Analysis of integrated biomarker response (IBR) showed a decrease in the value of IBR along with an increase in cadmium concentration but no similar pattern found in copper. The multiple factor analysis (MFA) approach showed that exposure to Cu 0.3 μmol L-1 for 48 h had high score of protein content and SOD activity in the first dimension. For the second dimension, exposure to Cu 1.6 µmol L-1 for 6 h had high score of APX and SOD activity.

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Semi-continuous Cultivation of Chlorella minutissima in Landfill Leachate: Effect of Process Variables on Biomass Composition

Santos

Tagliaferro

Santos

et al. 2021

Waste Biomass Valor

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Phototrophic culture of Chlorella sp. using charcoal ash as an inorganic nutrient source

Cited by 10 publications

References 36 publications

Effects of Process Variables in Semi-continuous Cultivation of Chlorella Minutissima on the Biomass Composition

Effects of Process Variables in Semi-continuous Cultivation of Chlorella Minutissima on the Biomass Composition

Integrated assessment of biomarker responses in algae Chlorella sorokiniana exposed to copper and cadmium

Semi-continuous Cultivation of Chlorella minutissima in Landfill Leachate: Effect of Process Variables on Biomass Composition

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