Cited by 20Algal biology and biofuel productionMicrobial Metabolic Engineering and BioproductionLipid metabolism and biosynthesis

Development of a single phase nitrate feeding strategy for enhanced lipid productivity from green microalgae for biodiesel production

Sonkar, Sashi, Mallick, Nirupama·2017·Environmental Progress & Sustainable Energy

Abstract

Biomass productivity and cellular lipid content are two major components that influence the ultimate lipid productivity from algal biomass. In this report, a nitrate feeding strategy was developed taking three green microalgae, Scenedesmus obliquus, Chlorella vulgaris, and C. minutissima, to achieve higher lipid productivity under single phase cultivation. Four different strategies, i.e. nitrate‐sufficient, nitrate‐deficient, biphasic nitrate‐deficient and low‐dose sequential nitrate feeding, were examined. The biphasic nitrate‐deficient approach depicted the maximum lipid productivity. To bring this biphasic approach to a single phase, sequential limited nitrate feeding strategy was examined. This showed nitrate supplementation with a 1/100th dose of standard N 11 medium at an interval of 3 days resulted in a significant rise in lipid productivity. The biodiesel samples also demonstrated the predominance of saturated and monounsaturated fatty acid methyl esters. This study, therefore, suggests that with appropriate standardization, the usual biphasic approach can be brought down to a single phase, thereby reducing the overall cost of microalgal biomass production for biodiesel purpose. Moreover, this strategy is user‐friendly, and would reduce the nitrate requirements for large‐scale cultivation, thus, would result in cost‐effective and eco‐friendly biodiesel production from microalgae. © 2016 American Institute of Chemical Engineers Environ Prog, 36: 222–231, 2017

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Crossref · 10.1002/ep.12443

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  • Nitrogen deficiency for Chlorella vulgaris, according to various researchers, is estimated from 0.01 g L−1 NaNO3 to 0.15 g L−1 KNO3 and 0.375 g L−1 NaNO3.

    “Nitrogen deficiency for Chlorella vulgaris, according to various researchers, is estimated from 0.01 g L− 1 NaNO3 [34] to 0.15 g L− 1 KNO3 [93] and 0.375 g L− 1 NaNO3 [109].”
  • For Tetradesmus obliquus, a similar conclusion is drawn for significantly lower concentrations of 0.01-0.1 g L−1 KNO3.

    “For Tetradesmus obliquus, a similar conclusion is drawn for significantly lower concentrations of 0.01–0.1 g L− 1 KNO3 [34].”

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Authors
Sonkar, S., & Mallick, N.
Affiliations
Indian Institute of Technology Kharagpur (IN)
Corresponding author
Mallick, Nirupama
Venue
Environmental Progress & Sustainable Energy
Publisher
Wiley
Published
2016-08-19
Volume
36
Issue
1
Pages
222-231
ISSN
  • 1944-7442 (ISSN-L)
  • 1944-7450
OpenAlex
W2510044125
Cited by
20
References
34
Citations by year
2026: 3 · 2025: 2 · 2024: 1 · 2023: 3 · 2022: 3 · 2020: 5 · 2019: 3
FWCI
0.27
Type
journal article
Language
en
Open access
closed
Locations
Environmental Progress & Sustainable Energy (publishedVersion)
Funders
Indian Council of Agricultural Research
Topics
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Algal biology and biofuel production
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Microbial Metabolic Engineering and Bioproduction
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Biochemistry › Lipid metabolism and biosynthesis
Keywords
green microalgae, biodiesel production, Scenedesmus obliquus, Chlorella vulgaris, Chlorella minutissima, fatty acid methyl esters

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