DI GANGI, ROBERTA (2019) Caratterizzazione del profilo fenolico e carotenoidico di Microalgae Marine mediante Cromatografia liquida accoppiata alla spettrometria di massa Characterisation of the Phenolic and Carotenoid Profiles of Marine Microalgae by Liquid Chromatography Coupled to Mass Spectrometry. Laurea Magistrale thesis, UNSPECIFIED.
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Abstract
This study aimed to investigate the potential of four sea water microalgae, isolated and cultivated at M’diq Bay in Morocco, as a new source of natural antioxidants. These microalgae belong to different classes, including Phaedactylium tricornitum(Bacillariophyceae), Nannochloropsis gaditana(Eustigmatophyceae), Nannochloris sp(Trebouxiophyceae), and Tetraselmis suecica(Chlorodendrophycea). The antioxidant properties were screened by the use of in vitro assays,namely 2,2-difenil-1-picrylhydrazyl, Ferric reducing antioxidant power, and Ferrous ions chelating activity, and compound identification was carried out in methanol and acetone extracts of both driedand fresh microalgae biomass by HPLC–PDA–MS analysis. Among the investigated microalgae, Phaedactylium tricornutum was the richest one regarding its carotenoid (especially all-E-fucoxanthin)and phenolic (especially protocatechuic acid) contents, as well as antioxidant activity (65.5%), followed by Nannochloris sp, Tetraselmis suicica, and Nannochloropsis gaditana, with antioxidant activity of 56.8%,54.9%, and 51.1%, respectively.
| Item Type: | Tesi (Laurea Magistrale) |
|---|---|
| Subjects: | Scienze Chimiche |
| Dipartimento: | Dipartimento di Scienze chimiche, biologiche, farmaceutiche ed ambientali |
| Depositing User: | Dott.ssa Santina Francolino |
| Date Deposited: | 10 Jul 2020 06:50 |
| Last Modified: | 10 Jul 2020 06:50 |
| URI: | http://cab.unime.it/tesi/id/eprint/4627 |
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