American Journal of Innovative Research & Applied Sciences
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American Journal of innovative Research & Applied Sciences
ISSN 2429-5396 (Online) OCLC Number: 920041286
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| APRIL | VOLUME 4 | N° 4 | 2017 |
ABSTRACT Background: Microalgae are organisms that use light as an energy source to fix CO2, and today they are attracting a growing interest in the world. A multitude of scientific and technological locks deserve to be raised, at the crossroads of innovations between agro-ecological approach and techno-economic vision. In the context of the biotechnological valuation of microlagal species, we are interested in the study of a halotolerant species, Dunaliella spp., which develops in salinas that are generally exploited in Morocco only for salt production, while Contain this microalga exploited for these bioactive molecules and its high antioxidant power. Objective: This study evaluate the antioxidant activity by the diphenyl-pycryl-hydrazyl (DPPH) test of different extracts (ethanol, acetone, methanol and chloroform) prepared from six native strains of the microalgal Dunaliella spp. isolated from six different Moroccan saltworks. Methods: To this end, algal cultures were maintained in a culture chamber at T=25±1°C under continuous white light and constant stirring for a period of 15 days and then the antioxidant power was estimated by the DPPH test. Results:Dunaliella extracts revealed an important antioxidant activity, especially for ethanolic extract in all the strains tested with a highest level of 83% observed for the strain (DUN4)isolated from Tislatine saltpond in Boujdour region. Conclusion: this study highlated the important antioxidant activity of the majority of microalgal extracts of Dunaliella. These findings motivate the need to study more closely the virtues of these microalgae, particularly the determination of their active biomolecules. Keywords: Microalgae, bioactive molecule, antioxidant activity, Dunaliella spp., DPPH.
Affiliation. 1. Laboratory of Biotechnology| Specialized Center of Valorization and Technology of Marine Products | National Institute for Marine Research (INRH) | Agadir 80090 | Morocco| 2. Laboratory of the Aquatic Systems: Marine and Continental Environment| Faculty of Science| University Ibn Zohr | Agadir 8006 | Morocco| 3. Laboratory of Food Bacteriology| Specialized Center of Valorization and Technology of Marine Products| National Institute for Marine Research (INRH) | Agadir 80090|Morocco | 4. Bio-environment| Health and Bioressources Team| Department of Biology| Faculty of Science| Agadir 80060 | Morocco|
This article is made freely available as part of this journal's Open Access: ID | Imane ManuscriptRef.1-ajira220317 |
