Secondary Metabolites and Antioxidant Capacity of the Tunisian Lichen Diploschistes ocellatus (Ascomycota)
| Autor: | Ayda Khadhria, Mark R. D. Seaward, Samira Aschi-Smiti, Marwa Bannour, Maria Eduarda M. Araújo, Mohamed Mendili |
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| Rok vydání: | 2019 |
| Předmět: |
Antioxidant
Lichens DPPH medicine.medical_treatment Flavonoid Secondary Metabolism Applied Microbiology and Biotechnology Antioxidants chemistry.chemical_compound Ascomycota Phenols Picrates Drug Discovery Acetone medicine Tannin Proanthocyanidins Food science Chelating Agents Flavonoids Pharmacology chemistry.chemical_classification Biphenyl Compounds Free Radical Scavengers Biphenyl compound chemistry Proanthocyanidin Methanol Tannins |
| Zdroj: | International Journal of Medicinal Mushrooms. 21:817-823 |
| ISSN: | 1521-9437 |
| DOI: | 10.1615/intjmedmushrooms.2019031423 |
| Popis: | This study, the first to assess the total phenolic, flavonoid, tannins, and proanthocyanidin content of the Tunisian lichen Diploschistes ocellatus, determined the antioxidant capacity in scavenging 2,2 diphenyl-1-picrylhydrazyl (DPPH), as well as the ferric-reducing and iron-chelating powers. The phenolic compound content of D. ocellatus was shown to be related to antioxidant activity. The highest phenolic and flavonoid contents of extracts were obtained with acetone (286.3 μg GAE/g DW and 3.24 μg CE/g DW, respectively), while the highest tannin and proanthocyanidin contents were obtained with methanol (5.5 μg TAE/g DW and 35.12 μg CE/g DW, respectively). The highest DPPH' scavenging capacity and iron-chelating power of extracts were obtained with methanol (concentration providing 50% inhibition [IC50] = 0.029 mg/mL and IC50 = 0.425 mg/mL, respectively), while acetone extracts showed a higher reducing power (IC50 = 0.118 mg/mL). |
| Databáze: | OpenAIRE |
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