Batch Growth of Chlorella Vulgaris CCALA 896 versus Semi-Continuous Regimen for Enhancing Oil-Rich  Biomass Productivity

Vaičiulytė, Sigita; Padovani, Giulia; Kostkevičienė, Jolanta; Carlozzi, Pietro

doi:10.3390/en7063840

Cited by 25 publications

(7 citation statements)

References 46 publications

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“…Regardless, our results suggested the similar trend described in the above-mentioned publications: lower dilution rates result in lower biomass productivities (although higher biomass concentrations). Other operational regimes such as batch or semi-continuous have been tested for this microalga in other studies but rendering lower yields (0.3 g L −1 d −1 ) [38]. Regarding other microalgal species cultivated photo-autotrophically in continuous fed as Scenedesmus, Chlorococcum or Pseudokirchneriella [14,39], Chlorella might be defined as a fast growing and efficient CO 2 assimilation microorganism.…”

Section: Discussionmentioning

confidence: 99%

How to combine CO2 abatement and starch production in Chlorella vulgaris

et al. 2018

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Microalgae production has gained attention in recent years as promising systems for CO 2 abatement as well as a source of proteins, pigments, vitamins, lipids, and carbohydrates. Particularly, starch can be used for bioethanol production in a well-established fermentative process. The aim of this work was to maximize and model biomass productivity and CO 2 assimilation in continuous cultures of Chlorella vulgaris. The following culture parameters were studied: dilution rate, pH, temperature, light intensity, and nitrogen supply. The proposed model (r 2 = 0.95) predicted a maximum biomass productivity of 0.7 g L −1 d −1 and CO 2 assimilation of 1.3 g L −1 d −1. The experimental data agreed with these predictions, resulting in a maximum biomass productivity of 0.67 g L −1 d −1 (resulting in a CO 2 assimilation of 1.23 g L −1 d −1). In addition, the starch content was determined, and the results were used as input into a second model, which aimed at predicting starch accumulation during CO 2 abatement processes (r 2 = 0.84). This second model predicted a daily and continuous production of biomass with a maximum starch content of 0.25 g g −1 d −1 (25% dcw), but under different culture conditions than those found for maximizing biomass productivity and CO 2 assimilation. The maximum starch content experimentally determined was 0.2 g g −1 d −1 (20% dcw). Thus, to implement a biological system for CO 2 abatement coupled to starch accumulation, it is necessary to find a compromise between these two processes. Hence, although yield in both processes would be reduced, a simultaneous process for CO 2 mitigation and starch production would be feasible.

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Section: Discussionmentioning

confidence: 99%

How to combine CO2 abatement and starch production in Chlorella vulgaris

et al. 2018

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“…The conclusion as that various additions of nutrients in medium recipe showed a direct effect on the cell content, such as lipid, biomass, carbohydrate, protein, chlorophyll and pigments [9,10]. Artificial media with known chemical composition is used to stimulate diverse nutrient requirement of the growth for particular algal species.…”

Section: Introductionmentioning

confidence: 99%

Growth Medium Screening for Chlorella vulgaris Growth and Lipid Production

Wong¹

2017

JAMB

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“…The vulgaris GUMSH strain (0.051 g/100 mL) while the highest lipid amount was observed in C. vulgaris UIK strain (0.019 g/100 mL) and the lowest in C. vulgaris GUH, TOH, AUH strains (0.010 g/100 mL). Besides, the biochemical composition of C. vulgaris was found as protein (39.2 ± 1.1%), carbohydrates (24.5 ± 0.3%), lipids (25.3 ± 0.1%) in BG-11 nutrient media and as protein (37.2 ± 0.8%), carbohydrates (27.7 ± 0.2%), lipids (26.8 ± 0.2%) in Kolkwitz nutrient media [22,40]. The growth, biomass production and biochemical composition of C. vulgaris cultures were examined in three different media (LC Oligo, Chu 10 and WC media) and the highest cell density (2.74 × 10 6 cells/mL) and chlorophyll a (1 μg/mL) were observed in LC Oligo nutrient medium.…”

Section: Resultsmentioning

confidence: 98%

Increasing the Protein Amount of Chlorella vulgaris [Chlorphyta] Strains Isolated from Different Fresh Water Ponds

Duygu¹

2017

JESE-B

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Chlorella vulgaris is a single-cell, spherical green algae and one of the microalgae on which many applied studies are conducted. In the present study, five strains displaying fast and efficient reproduction were chosen among 11 C. vulgaris strains isolated from different fresh water ponds and their cell numbers and the amount of chlorophyll a, protein, lipid, cellulose and carbohydrate were examined. The main goal of the study is to investigate increasing the biochemical contents especially the protein content of C. vulgaris strains in different mediums. In the present study, cell densities were determined through cell count for five days. In parallel with cell count, their chlorophyll a content was determined. The highest cell density was observed with C. vulgaris TOH (Tourism and Hotel Management Pond) strain as 5.5 × 10 4 h/mL, and the chlorophyll a content as 4.3 × 10 2 mg/m 3 . The highest intracellular protein amount was determined with C. vulgaris GUH (Gazi University Rectorship Pond) (0.061 g/100 mL) and the highest lipid amount was attained with C. vulgaris UIK (Ulus Construction Well) strain as 0.019 g/100 mL. The process of increasing the intracellular protein amount in C. vulgaris GUH strain was carried out in Prat, Yagojinski and Chlorella medium. The results indicated that Chlorella medium increased the intracellular protein amount.

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Batch Growth of Chlorella Vulgaris CCALA 896 versus Semi-Continuous Regimen for Enhancing Oil-Rich Biomass Productivity

Cited by 25 publications

References 46 publications

How to combine CO2 abatement and starch production in Chlorella vulgaris

How to combine CO2 abatement and starch production in Chlorella vulgaris

Growth Medium Screening for Chlorella vulgaris Growth and Lipid Production

Increasing the Protein Amount of Chlorella vulgaris [Chlorphyta] Strains Isolated from Different Fresh Water Ponds

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