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Evaluation of antioxidant and antibacterial capacity of green microalgae Scenedesmus subspicatus.
- Source :
-
Food science and technology international = Ciencia y tecnologia de los alimentos internacional [Food Sci Technol Int] 2019 Jun; Vol. 25 (4), pp. 318-326. Date of Electronic Publication: 2019 Jan 15. - Publication Year :
- 2019
-
Abstract
- Microalgae are considered one of the most promising raw materials for the development of high value products for pharmaceuticals, nutraceuticals, and cosmetic industries, as well as being potential sources of protein, vitamins, and minerals for human consumption. Hence, the present research focuses extraction of antioxidant and antimicrobial compounds from Scenedesmus subspicatus using solvents of different polarities. Different solvents such as ethanol, methanol, butanol, acetone, dimethyl sulfoxide, and water were used to extract compounds from the green microalgae S. subspicatus and then they were examined for phytochemical screening, antioxidant activity, and antimicrobial properties. In vitro free radical quenching and total antioxidant activity of extracts were investigated with 1,1-diphenyl-2-picryl hydrazyl and compared with catequin and gallic acid as positive controls. The antimicrobial activity was evaluated in gram-negative and gram-positive bacteria. Aqueous extracts and dimethyl sulfoxide presented better performance in phytochemical analysis. This result showed consistency in the sequential tests. The antioxidant activity was also better using the two solvents cited above. The extracts acetone, water, and dimethyl sulfoxide showed ability to inhibit the growth of Bacillus subtilis. However, only dimethyl sulfoxide inhibited the growth of Klebsiella pneumoniae and Escherichia coli. Use of the aqueous extract, proven its effectiveness, is an economic protocol and avoids the use of toxic substances.
- Subjects :
- Anti-Bacterial Agents pharmacology
Antioxidants pharmacology
Bacteria drug effects
Brazil
Gallic Acid analysis
Microbial Sensitivity Tests
Phytochemicals analysis
Plant Extracts pharmacology
Solvents
Tannins analysis
Anti-Bacterial Agents analysis
Antioxidants analysis
Microalgae chemistry
Plant Extracts chemistry
Scenedesmus chemistry
Subjects
Details
- Language :
- English
- ISSN :
- 1532-1738
- Volume :
- 25
- Issue :
- 4
- Database :
- MEDLINE
- Journal :
- Food science and technology international = Ciencia y tecnologia de los alimentos internacional
- Publication Type :
- Academic Journal
- Accession number :
- 30646759
- Full Text :
- https://doi.org/10.1177/1082013218825024