Growth, Lipid Productivity and Cellular Mechanism of Lipid Accumulation in Microalgae &lt;i&gt;Monoraphidium&lt;/i&gt; sp. Following Different Phosphorous Concentrations for Biofuel Production

Dhup, Saumya; Kannan, Dheeban Chakravarthi; Dhawan, Vibha

doi:10.18520/cs/v112/i03/539-548

Cited by 10 publications

(3 citation statements)

References 18 publications

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“…In contrast, its biomass productivity decreased signi cantly along with a decrease in P content at 0.053 gL -1 (BBM level) to 0.033 gL -1 (half the P in BBM) in the medium. Dhup et al (2017) [38] observed a decline in the growth of Monoraphidium contortum at 0.1 gL -1 P. In contrast, in the current study, a decrease in productivity was observed for the species at 0.053 gL -1 P only. However, an increase in growth of the species at P content at 0.093 (two times KH 2 PO 4 in BBM) for this species is found while keeping N at the BBM level in the medium.…”

Section: Biomass Productivity At Varying N and P Regimes In Bbmcontrasting

confidence: 90%

Experimental assessment of lipid yield and phycoremediation potential of five indigenous microalgae under various nutrient regimes (N:P) in BBM

Joseph,

Ray

2023

Preprint

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The success of the emerging algal fuel industry depends on identifying high-quality species and standardization of their culture protocols for lipid yield and nutrient removal efficiency. The primary objective of the study was to determine the phycoremediation cum lipid-rich biomass production potential of five green microalgae isolated from bloomed freshwaters of Kerala. Three experiments were carried out under various nitrogen and phosphorus content with different N:P. The first experiment included four different treatment levels of N, the second experiment included four different treatment levels of P, and the third experiment had two different treatment levels of N and P together in BBM. Regular BBM was the control. The parameters measured were biomass and lipid productivity, fatty acid composition, biodiesel properties, Nitrogen and Phosphorus removal rate, and efficiency. Chlorolobion braunii appeared productive in N-rich media with high N:P, whereas Monoraphidium contortum in P-rich media with low N:P. Among the five species tested, the latter shows the highest lipid yield and productivity at low N:P in culture media. The lipid content of four species has demonstrated high-quality biofuel properties. The optimum nutrient regimes and N:P for Nitrogen Removal and Phosphorus removal rates were found to be species-specific. Overall, the experiments stand as a model for understanding the influence of variations in N and P concerning N:P on biomass productivity, lipid content, lipid productivity, and N and P removal rate and efficiency of algae for initial standardization of the culture protocols for further industrial trials.

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Section: Biomass Productivity At Varying N and P Regimes In Bbmcontrasting

confidence: 90%

Experimental assessment of lipid yield and phycoremediation potential of five indigenous microalgae under various nutrient regimes (N:P) in BBM

Joseph,

Ray

2023

Preprint

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“…The microalgae isolates examined in the present study have been reported as lipid accumulators in some of the earlier studies done on these microphytes ( Table 2). The lipid content of a microalgae can further be increased by altering the growth conditions including nutrients (Sánchez-García et al 2013;Dhup et al 2017), salinity (Pandit et al 2017), temperature (Venkata et al 2014), light (Wahidin et al 2013), pH (Sakarika andKornaros 2016), etc. Rosenberg et al (2014) reported an increase in lipid content in Chlorella sorokiniana UTEX 1230 from 18 to 39% when grown heterotrophically.…”

Section: Number Of Daysmentioning

confidence: 99%

Morpho-taxonomic, genetic, and biochemical characterization of freshwater microalgae as potential biodiesel feedstock

et al. 2019

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In the present study, seven axenic fresh water microchlorophytes were isolated and identified as Tetradesmus dimorphus (NEIST BT-1), Chlorella sorokiniana (NEIST BT-2), Desmodesmus sp. (NEIST BT-10), Selenastrum sp. (NEIST BT-A6), Tetradesmus obliquus (NEIST BT-A1), Tetradesmus sp. (NEIST BT-A10), and Asterarcys sp. (NEIST BT-A15) based on morphological and molecular characterization. Their potential to be used as biodiesel feedstock was evaluated depending on their growth characteristics and lipid profiles. Among the seven isolates, NEIST BT-2 was found to be the most promising candidate owing to its high biomass yield (2.09 ± 0.037 g L −1) and lipid productivity (107.60 ± 10.175 mg L −1 day −1). The gas chromatography analysis confirmed the presence of significant amounts of palmitic acid, linoleic acid, linolenic acid, and oleic acid in the isolate which are some of the major constituents of any biodiesel. The predictive models showed that the biodiesel from this isolate has ideal fuel properties which comply with the ASTM D6751 and EN 14214 specifications. These findings demonstrate that NEIST BT-2 can be used as a prospective candidate for consideration of large-scale biodiesel production.

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“…In our previous study, marine macroalga Rhizoclonium africanum showed maximum growth and lipid production at limited nitrogen [13]. Most of the works on biomass and lipid accumulation had been done using unicellular microalga [6,[28][29][30][31][32], while very few reports are available on filamentous macroalga [12,14,33]. In the present study different concentrations of four nutrients like nitrogen, phosphorus, EDTA and NaCl were introduced in the culture medium to study the growth pattern in terms of biomass yield and lipid accumulation in marine macroalga C. aerea.…”

Section: Discussionmentioning

confidence: 99%

Effects of nitrogen, phosphorus, EDTA and sodium chloride on biomass and lipid accumulation of Chaetomorpha aerea

Satpati¹,

Pal²

2020

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The increase of total lipid and fatty acids production was studied under different nutrient stress conditions using the macroalga, Chaetomorpha aerea. The effects of nitrogen, phosphorus, ethylene diamine tetra-acetate and sodium chloride on the growth and lipid accumulation were systematically investigated in laboratory conditions. The biomass was harvested at different stages of cultivation and assessed. The maximum changes of growth and lipid accumulation were observed in the exponential phase at different cultural conditions. The two-fold increase of total lipid was found in the order of 28.27±0.04 % (at 0.1 g/L nitrogen) > 27.30±0.37 % (at 0.5 g/L of phosphorus) > 25.86±0.77 % (at 0.05 g/L of EDTA)> 24.37±0.04 % (at 0.05 g/L NaCl) on 8th day of cultivation. The fatty acids were identified and quantified by gas chromatography mass spectrometry (GC-MS). The alga produces significantly high amount of monounsaturated fatty acid (MUFA) and saturated fatty acids (SFA) than the polyunsaturated fatty acids (PUFA) in different cultural conditions. The elevated levels of C16:1, C18:1 and C20:1 was identified under nitrate, phosphate and salt stress conditions, which are more suitable for biodiesel production.

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Growth, Lipid Productivity and Cellular Mechanism of Lipid Accumulation in Microalgae <i>Monoraphidium</i> sp. Following Different Phosphorous Concentrations for Biofuel Production

Cited by 10 publications

References 18 publications

Experimental assessment of lipid yield and phycoremediation potential of five indigenous microalgae under various nutrient regimes (N:P) in BBM

Experimental assessment of lipid yield and phycoremediation potential of five indigenous microalgae under various nutrient regimes (N:P) in BBM

Morpho-taxonomic, genetic, and biochemical characterization of freshwater microalgae as potential biodiesel feedstock

Effects of nitrogen, phosphorus, EDTA and sodium chloride on biomass and lipid accumulation of Chaetomorpha aerea

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