Cited by 208Algal biology and biofuel productionLipid metabolism and biosynthesisAquaculture Nutrition and Growth

Effect of salinity stress on growth, lipid productivity, fatty acid composition, and biodiesel properties in Acutodesmus obliquus and Chlorella vulgaris

Pandit, Priti Raj, Fulekar, Madhusudan H., Karuna, Mallampalli Sri Lakshmi·2017·Environmental Science and Pollution Research

Abstract

Two microalgae strains including Chlorella vulgaris and Acutodesmus obliquus were grown on BG11 medium with salinity stress ranging from 0.06 to 0.4 M NaCl. Highest lipid content in C. vulgaris and A. obliquus was 49 and 43% in BG11 amended with 0.4 M NaCl. The microalgal strains C. vulgaris and A. obliquus grow better at 0.06 M NaCl concentration than control condition. At 0.06 M NaCl, improved dry biomass content in C. vulgaris and A. obliquus was 0.92 and 0.68 gL-1, respectively. Stress biomarkers like reactive oxygen species, antioxidant enzyme catalase, and ascorbate peroxidase were also lowest at 0.06 M NaCl concentration revealing that both the microalgal strains are well acclimatized at 0.06 M NaCl concentration. The fatty acid composition of the investigated microalgal strains was also improved by increased NaCl concentration. At 0.4 M NaCl, palmitic acid (37%), oleic acid (15.5%), and linoleic acid (20%) were the dominant fatty acids in C. vulgaris while palmitic acid (54%) and stearic acid (26.6%) were major fatty acids found in A. obliquus. Fatty acid profiling of C. vulgaris and A. obliquus significantly varied with salinity concentration. Therefore, the study showed that salt stress is an effective stress that could increase not only the lipid content but also improved the fatty acid composition which could make C. vulgaris and A. obliquus potential strains for biodiesel production.

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Crossref · 10.1007/s11356-017-8875-y

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  • Although some microalgae showed an increase in MUFA, most microalgae still showed an increase in SFA after high concentration NaCl treatments.

    “Although some microalgae showed an increase in MUFA, most microalgae still showed an increase in SFA after high concentration of NaCl treatments [128, 129, 133].”
  • The lipid content of C. reinhardtii, A. dimorphus, C. vulgaris, and Acutodesmus obliquus increases when exposed to concentrations exceeding 0.1 M NaCl.

    “The lipid content of various microalgae species such as C. reinhardtii, A. dimorphus, C. vulgaris, and Acutodesmus obliquus has been found to increase when exposed to concentrations exceeding 0.1 M NaCl [66, 126–128].”

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Authors
Pandit, P. R., Fulekar, M. H., & Karuna, M. S. L.
Affiliations
  • Central University of Gujarat (IN)
  • Indian Institute of Chemical Technology (IN)
Corresponding author
Fulekar, Madhusudan H.
Venue
Environmental Science and Pollution Research
Published
2017-04-07
Volume
24
Issue
15
Pages
13437-13451
ISSN
  • 0944-1344 (ISSN-L)
  • 1614-7499
OpenAlex
W2605168439
Cited by
208
References
95
Citations by year
2026: 21 · 2025: 22 · 2024: 31 · 2023: 33 · 2022: 18 · 2021: 37 · 2020: 16 · 2019: 16 · 2018: 10 · 2017: 3 · 2012: 1
FWCI
3.29
Type
journal article
Language
en
Open access
closed
Locations
  • Environmental Science and Pollution Research (publishedVersion)
  • PubMed (publishedVersion)
Funders
Central University of Gujarat
Topics
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Algal biology and biofuel production
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Biochemistry › Lipid metabolism and biosynthesis
  • Life Sciences › Agricultural and Biological Sciences › Aquatic Science › Aquaculture Nutrition and Growth
Keywords
salt stress, sodium chloride, Chlorella vulgaris, Acutodesmus obliquus, microalgae, lipid productivity, fatty acid composition, biodiesel, reactive oxygen species, antioxidant enzymes, catalase, ascorbate peroxidase, microalgal biomass, palmitic acid, oleic acid, stearic acid
MeSH terms
Fatty Acids, Biomass, Chlorella vulgaris, Salinity, Biofuels, Microalgae

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