Effects of various abiotic factors on biomass growth and lipid yield of Chlorella minutissima for sustainable biodiesel production

Chandra, Rampalli Viswa; Amit, .; Ghosh, Uttam Kumar

doi:10.1007/s11356-018-3696-1

Cited by 50 publications

(18 citation statements)

References 36 publications

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“…The increase in the LY of D. splendida when cultured on the BG11 medium may be back to the high N concentration (1.5 g L -1 ) in the BG11 medium which led to an increasing μ max , where LY is the product of the BY multiplied by the LC 18 . This finding went parallel with Chandra et al 20 who studied the effect of different culture media (BG-11, modified CHU-13 and BBM medium) on the growth and lipid production of Chlorella minutissima. Maximum BY and LY were achieved by modified CHU-13 medium (970 ± 0.21 and 356.63 ± 0.51 mg L −1 , respectively) succeed in descending order by those produced by BG-11 medium (850 ± 0.12 mg L −1 and 243.65 ± 0.30 mg L −1 , respectively) and the minimum values were recorded by BBM medium (730 ± 0.42 mg L −1 and 196.83 ± 0.43 mg L −1 , respectively).…”

Section: Influence Of Media Composition On Growth and Lipid Accumulationsupporting

confidence: 76%

Impact of Culture Media Composition, Nutrients Stress and Gamma Radiation on Biomass and Lipid of the Green Microalga, Dictyochloropsis splendida as a Potential Feedstock for Biodiesel Production

2022

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Biodiesel production from microalgae depends on the biomass and lipid production. Both biomass and lipid accumulation is controlled by several factors. The effect of various culture media (BG11, BBM, and Urea), nutrients stress [nitrogen (N), phosphorous (P), magnesium (Mg) and carbonate (CO 3 )] and gamma (γ) radiation on the growth and lipid accumulation of Dictyochloropsis splendida were investigated. The highest biomass and lipid yield of D. splendida were achieved on BG11 medium. Cultivation of D. splendida in a medium containing 3000 mg L −1 N, or 160 mg L −1 P, or 113 mg L −1 Mg, or 20 mg L -1 CO 3, led to enhanced growth rate. While under the low concentrations of nutrients caused a marked increase in the lipid content. Cultures exposure to 25 Gy of γ-rays, led to an increase in lipid content up to 18.26 ± 0.81 %. Lipid profile showed the maximum presence of saturated fatty acids (SFAs, 63.33%), and unsaturated fatty acids (UFAs, 37.02%). Fatty acids (FAs) recorded the predominance of C16:0, C18:2, C15:0 and C16:1, which strongly proved D. splendida is a promising feedstock for biodiesel production.

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Section: Influence Of Media Composition On Growth and Lipid Accumulationsupporting

confidence: 76%

Impact of Culture Media Composition, Nutrients Stress and Gamma Radiation on Biomass and Lipid of the Green Microalga, Dictyochloropsis splendida as a Potential Feedstock for Biodiesel Production

2022

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“…Nitrogen starvation (Rehman & Anal, 2019), phosphate limitation (Yu et al, 2016), magnesium supplementation (Esakkimuthu, Krishnamurthy, Govindarajan, & Swaminathan, 2016;Goh et al, 2019), carbon source (Raeisossadati, Ahmadzadeh, McHenry, & Moheimani, 2014), iron content of the culture medium (Chandra, Amit & Ghosh, 2019), high salinity (Ji et al, 2018), and high light intensities (He, Yang, & Hu, 2018) can enhance the lipid content. Gamma radiation had a significant effect on the biochemical composition of phytoplankton, although these effects were species-specific (Golz & Bradshaw, 2019).…”

Section: Introductionmentioning

confidence: 99%

Effect of nutrients and gamma radiation on growth and lipid accumulation of Chlorella vulgaris for biodiesel production

Abo-State

Shanab

Ali

2019

Journal of Radiation Research and Applied Sciences

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The present work investigated the effects of nitrogen (N), phosphorus (P), magnesium (Mg), carbonate (CO 3) concentrations and gamma radiation doses on growth and lipid production of Chlorella vulgaris. The obtained results showed that culture conditions have highly significant effects on biomass and lipid accumulation. The maximum lipid content was observed at 350, 40, 150,20 mg L −1 of N, P, Mg, and CO 3 concentrations, respectively. While the highest biomass yield was achieved at high N and P as well as reduced Mg and CO 3 concentrations. Whereas gamma radiation showed a negative effect. Lipid profile recorded maximum saturated (SFAs, 62.44%) and unsaturated fatty acids (UFAs, 37.56%) with palmitic acid (C16:0), linoleic acid (C18:2), pentadecanoic acid (C15:0), palmitoleic acid (C16:1) and oleic acid (C18:1) as predominant fatty acids, which prove that Chlorella vulgaris is a promising feedstock for biodiesel production.

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“…was about 1.10 g L −1 in Bold’s Basal media. Chandra et al [ 53 ] reported maximum biomass yield of Chlorella minutissima was 1.84 g L −1 while cultivating in a modified CHU-13 medium by varying different abiotic factors. Additionally, Choix et al [ 54 ] studied biomass yield of Chlorella vulgari s U162, Chlorella sp., Scenedesmus obliquus U169, and Scenedesmus sp.…”

Section: Resultsmentioning

confidence: 99%

A novel nanoemulsion-based microalgal growth medium for enhanced biomass production

Nigam¹,

Pant²,

Singh

2021

Biotechnol Biofuels

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Background Microalgae are well-established feedstocks for applications ranging from biofuels to valuable pigments and therapeutic proteins. However, the low biomass productivity using commercially available growth mediums is a roadblock for its mass production. This work describes a strategy to boost algal biomass productivity by using an effective CO2 supplement. Results In the present study, a novel nanoemulsion-based media has been tested for the growth of freshwater microalgae strain Chlorella pyrenoidosa. Two different nanoemulsion-based media were developed using 1% silicone oil nanoemulsion (1% SE) and 1% paraffin oil nanoemulsion (1% PE) supplemented in Blue-green 11 media (BG11). After 12 days of cultivation, biomass yield was found highest in 1% PE followed by 1% SE and control, i.e., 3.20, 2.75, and 1.03 g L−1, respectively. The chlorophyll-a synthesis was improved by 76% in 1% SE and 53% in 1% PE compared with control. The respective microalgal cell numbers for 1% PE, 1% SE and control measured using the cell counter were 3.00 × 106, 2.40 × 106, and 1.34 × 106 cells mL−1. The effective CO2 absorption tendency of the emulsion was highlighted as the key mechanism for enhanced algal growth and biomass production. On the biochemical characterization of the produced biomass, it was found that the nanoemulsion-cultivated C. pyrenoidosa had increased lipid (1% PE = 26.80%, 1% SE = 23.60%) and carbohydrates (1% PE = 17.20%, 1% SE = 18.90%) content compared to the control (lipid = 18.05%, carbohydrates = 13.60%). Conclusions This study describes a novel nanoemulsion which potentially acts as an effective CO2 supplement for microalgal growth media thereby increasing the growth of microalgal cells. Further, nanoemulsion-cultivated microalgal biomass depicts an increase in lipid and carbohydrate content. The approach provides high microalgal biomass productivity without altering morphological characteristics like cell shape and size as revealed by field emission scanning electron microscope (FESEM) images. Graphical abstract

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Effects of various abiotic factors on biomass growth and lipid yield of Chlorella minutissima for sustainable biodiesel production

Cited by 50 publications

References 36 publications

Impact of Culture Media Composition, Nutrients Stress and Gamma Radiation on Biomass and Lipid of the Green Microalga, Dictyochloropsis splendida as a Potential Feedstock for Biodiesel Production

Impact of Culture Media Composition, Nutrients Stress and Gamma Radiation on Biomass and Lipid of the Green Microalga, Dictyochloropsis splendida as a Potential Feedstock for Biodiesel Production

Effect of nutrients and gamma radiation on growth and lipid accumulation of Chlorella vulgaris for biodiesel production

A novel nanoemulsion-based microalgal growth medium for enhanced biomass production

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