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Isolation, Identification, and Biochemical Characteristics of a Cold-Tolerant Chlorella vulgaris KNUA007 Isolated from King George Island, Antarctica
- Source :
- Journal of Marine Science and Engineering, Volume 8, Issue 11, Journal of Marine Science and Engineering, Vol 8, Iss 935, p 935 (2020)
- Publication Year :
- 2020
- Publisher :
- Multidisciplinary Digital Publishing Institute, 2020.
-
Abstract
- A cold-tolerant unicellular green alga was isolated from a meltwater stream on King George Island, Antarctica. Morphological, molecular, and biochemical analyses revealed that the isolate belonged to the species Chlorella vulgaris. We tentatively named this algal strain C.vulgaris KNUA007 and investigated its growth and lipid composition. We found that the strain was able to thrive in a wide range of temperatures, from 5 to 30 &deg<br />C<br />however, it did not survive at 35 &deg<br />C. Ultimate analysis confirmed high gross calorific values only at low temperatures (10 &deg<br />C), with comparable values to land plants for biomass fuel. Gas chromatography/mass spectrometry analysis revealed that the isolate was rich in nutritionally important polyunsaturated fatty acids (PUFAs). The major fatty acid components were hexadecatrienoic acid (C16:3 &omega<br />3, 17.31%), linoleic acid (C18:2 &omega<br />6, 8.52%), and &alpha<br />linolenic acid (C18:3 &omega<br />3, 43.35%) at 10 &deg<br />C. The microalga was tolerant to low temperatures, making it an attractive candidate for the production of biochemicals under cold weather conditions. Therefore, this Antarctic microalga may have potential as an alternative to fish and/or plant oils as a source of omega-3 PUFA. The temperature tolerance and composition of C.vulgaris KNUA007 also make the isolate desirable for commercial applications in the pharmaceutical industry.
- Subjects :
- 0106 biological sciences
Linoleic acid
Chlorella vulgaris
cold-tolerant
Biomass
Ocean Engineering
01 natural sciences
Hexadecatrienoic Acid
lcsh:Oceanography
03 medical and health sciences
chemistry.chemical_compound
lcsh:VM1-989
calorific value
lcsh:GC1-1581
Food science
030304 developmental biology
Water Science and Technology
Civil and Structural Engineering
chemistry.chemical_classification
0303 health sciences
Strain (chemistry)
010604 marine biology & hydrobiology
fungi
lcsh:Naval architecture. Shipbuilding. Marine engineering
Fatty acid
food and beverages
PUFAs (polyunsaturated fatty acids)
chemistry
lipids (amino acids, peptides, and proteins)
Composition (visual arts)
Polyunsaturated fatty acid
Subjects
Details
- Language :
- English
- ISSN :
- 20771312
- Database :
- OpenAIRE
- Journal :
- Journal of Marine Science and Engineering
- Accession number :
- edsair.doi.dedup.....c55ade93244e0944eed982dbd8db5600
- Full Text :
- https://doi.org/10.3390/jmse8110935