| Name: | Description: | Size: | Format: | |
|---|---|---|---|---|
| 1.06 MB | Adobe PDF |
Authors
Advisor(s)
Abstract(s)
(Introduction) As society changes, industries need to make efforts to innovate, keeping up with these opportunities. For instance, the increasingly stringent health, sustainability, and safety requirements have driven the demand for natural and bioactive ingredients to replace synthetic ones in cosmetic formulations. In this regard, microalgae biomass is a rich source of biomolecules (e.g. pigments, lipids, secondary
metabolites, among others) to be used for cosmetics and cosmeceuticals purposes. In order to obtain
extracts with high antioxidant potential, carotenoids, chlorophylls, and phenolic compounds are biomolecules reported as likely to have a significant impact on antioxidant capacity of microalgae extracts. Carotenoids, for example, are capable of deactivating and trapping free radicals. On the other hand, the antioxidant activity of phenolic compounds is based on the transfer of hydrogen atoms and single electrons. Imposition of abiotic stress (i.e., medium composition, temperature, light irradiation, etc.) can modulate the profile and quantity of the components produced, resulting in extracts with different properties. Chromochloris zofingiensis, for instance, is known as a potential source of a powerful antioxidant, astaxanthin (approximately 50% of total carotenoid content). As for the composition of the culture medium, several compounds have been highlighted for playing an important metabolic role in biomass accumulation and composition, such as nitrate, phosphate, ferrous sulphate, and sodium chloride. Thus, this work aims to evaluate the influence of various cultivation parameters (i.e. culture medium composition, temperature, light irradiation and culture time) on the production of carotenoids, chlorophylls and phenolic compounds and to discuss the contribution of these biomolecules
in the antioxidant potential of aqueous and ethanolic extracts of C. zofingiensis.
Description
Keywords
Microalgae extracts Cosmetic applications
Citation
Corrêa, P.S., & Caetano, N.S. (2022, Dec. 13-15). Microalgae extracts for cosmetic applications: Influence of abiotic stress on their antioxidant potential [Poster presentation]. AlgaEurope, Rome, Italy