Synergistic dynamics of nitrogen and phosphorous influences lipid productivity in Chlorella minutissima for biodiesel production

Arora, Neha; Patel, Alok; Pruthi, Parul A.; Pruthi, Vikas

doi:10.1016/j.biortech.2016.02.112

Cited by 110 publications

(57 citation statements)

References 34 publications

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“…The best well-known strategy to achieve high lipid accumulation in oleaginous microorganisms is through nitrogen starvation [139][140][141][142][143][144][145]. Nitrogen is an essential part of the synthesis of proteins, nucleic acids, and chlorophyll, and during nitrogen limitation, microalgae undergo rapid metabolic remodeling, directing the carbon flow toward lipid production [140,144,[146][147][148][149][150][151][152][153].…”

Section: Oleaginous Microalgae and Diatomsmentioning

confidence: 99%

An Overview of Potential Oleaginous Microorganisms and Their Role in Biodiesel and Omega-3 Fatty Acid-Based Industries

et al. 2020

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Microorganisms are known to be natural oil producers in their cellular compartments. Microorganisms that accumulate more than 20% w/w of lipids on a cell dry weight basis are considered as oleaginous microorganisms. These are capable of synthesizing vast majority of fatty acids from short hydrocarbonated chain (C6) to long hydrocarbonated chain (C36), which may be saturated (SFA), monounsaturated (MUFA), or polyunsaturated fatty acids (PUFA), depending on the presence and number of double bonds in hydrocarbonated chains. Depending on the fatty acid profile, the oils obtained from oleaginous microorganisms are utilized as feedstock for either biodiesel production or as nutraceuticals. Mainly microalgae, bacteria, and yeasts are involved in the production of biodiesel, whereas thraustochytrids, fungi, and some of the microalgae are well known to be producers of very long-chain PUFA (omega-3 fatty acids). In this review article, the type of oleaginous microorganisms and their expertise in the field of biodiesel or omega-3 fatty acids, advances in metabolic engineering tools for enhanced lipid accumulation, upstream and downstream processing of lipids, including purification of biodiesel and concentration of omega-3 fatty acids are reviewed.

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Section: Oleaginous Microalgae and Diatomsmentioning

confidence: 99%

An Overview of Potential Oleaginous Microorganisms and Their Role in Biodiesel and Omega-3 Fatty Acid-Based Industries

et al. 2020

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“…All the pigments other than Chl a (mainly carotenoids) protect photosynthetic assemblies from photosensitization processes, and ratios of Chl a/Chl b and carotenoids/(Chl a + Chl b) reflect the PS II activity [ 44 , 45 ]. Compared with BG11 medium, decrease in the Chl a/Chl b ratio indicates a damaged photosynthetic system, which is also suggested by the increment in the carotenoids/(Chl a + Chl b) ratio, and this indirectly includes PS II depression and oxidative stress.…”

Section: Resultsmentioning

confidence: 99%

Lipid productivity in limnetic Chlorella is doubled by seawater added with anaerobically digested effluent from kitchen waste

Jiang

Zhang

Nie

et al. 2018

Biotechnol Biofuels

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BackgroundAn economical strategy for producing microalgae as biofuel feedstock is driven by the freshwater and nutrients input. In this study, seawater was applied to limnetic algal cultivation and the behavior of algae in seawater media was observed including growth, lipid synthesis, and ultrastructure. To make seawater cater algae, a kind of wastewater, anaerobically digested effluent from kitchen waste (ADE-KW), was used as nutrient sources.ResultsPure seawater cannot support the growth demand of freshwater microalga, due to high salinity and lack of nutrients. However, it is the conditions triggered the algae to synthesize lipids of 60%, double of lipid content in standard medium BG11. Introducing 3 or 5% ADE-KW (volume percentage) into seawater made algal growth reach the level attained in BG11, while lipid content compared favourably with the level (60%) in pure seawater. This method achieved the goal of fast growth and lipid accumulation simultaneously with the highest lipid productivity (19 mg/L day) at the exponential stage, while BG11 obtained 10.55 mg/L day at the stationary stage as the highest lipid productivity, almost half of that in seawater media. Moreover, the condition for highest lipid productivity enlarged algal cells compared to BG11. Under the condition for highest lipid productivity, Chlorella sorokiniana SDEC-18 had enlarged cells and increased settling efficiency compared to BG11, which facilitated harvest in an energy saving way.ConclusionsThe results suggested that combining seawater with ADE-KW to cultivate microalgae had a double function: nutrients and water for algal growth, and high salinity for stimulating lipid accumulation. If this technology was operated in practice, freshwater and non-waste nutrient consumption would be completely obviated.Electronic supplementary materialThe online version of this article (10.1186/s13068-018-1064-5) contains supplementary material, which is available to authorized users.

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“…Phosphorus is found in many organic compounds, and it plays a very important role in plants [ Arora et al, 2016]. The main source of phosphorus for plants are soluble orthophosphates in the soil solution, including H 2 PO 4 and, to a lesser degree, HPO 4 [Egli et al, 2012].…”

Section: Resultsmentioning

confidence: 99%

Chemical Composition of Spring Rapeseed Grown in Copper- Contaminated Soil Amended With Halloysite and Zeolite

Radziemska¹,

Mazur²

2017

J. Ecol. Eng.

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The purpose of this study was to determine the effect of soil contamination with copper doses of 0, 150, 300, and 450 mg . kg-1 of soil and the application of zeolite, raw and modified halloysite on the biomass of spring rapeseed and the content of nitrogen compounds and macronutrients in the above-ground parts of the tested plants. The content of macronutrients in plants was determined spectrophotometrically. The applied soil amendments and copper doses led to significant variations in the concentrations of the analyzed nutrients in spring rapeseed. Zeolite and halloysite were most effective in increasing the average above-ground biomass of the tested plants. Zeolite had a beneficial effect on the content of total nitrogen, ammonia nitrogen and phosphorus in the above-ground parts of spring rapeseed. Raw halloysite increased the content of sodium and calcium, whereas modified halloysite contributed to an increase in the nitrogen, potassium, sodium, calcium and magnesium content of the tested plants.

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Synergistic dynamics of nitrogen and phosphorous influences lipid productivity in Chlorella minutissima for biodiesel production

Cited by 110 publications

References 34 publications

An Overview of Potential Oleaginous Microorganisms and Their Role in Biodiesel and Omega-3 Fatty Acid-Based Industries

An Overview of Potential Oleaginous Microorganisms and Their Role in Biodiesel and Omega-3 Fatty Acid-Based Industries

Lipid productivity in limnetic Chlorella is doubled by seawater added with anaerobically digested effluent from kitchen waste

Chemical Composition of Spring Rapeseed Grown in Copper- Contaminated Soil Amended With Halloysite and Zeolite

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