| Abstrakt: |
The aim of the study was to determine the phenolic and flavonoid content of Essential Oils (EOs), chloroform and ethano-lic extracts of 12 Algerian Thymus species and evaluate their antioxidant and antifungal activities. EOs (1.73±0.30-15.00±1.24p,g/mg), chloroform extracts (33.8±2.42-160.93±3.88p,g/mg) and ethanol extracts (27.01±3.56 -148.46±4.40p,g/mg) showed considerable phenolic content. Flavonoids values of chloroform extracts ranged between 3.39±0.17 and 20.27±0.29p,g/mL while ethanolic extracts values ranged between 2.81±0.11 and 26.64±0.18p,g/mg. Results of DPPH showed that EOs, chloroform and ethanolic extracts exhibited strong radical scavenging activity (IC50=21.75±6.54-338.22±2.99p,g/mL, 22.91±5.59-90.93±1.36p,g/mL, and 33.51±5.72-103.80±4.54p,g/m, respectively). Inhibition of p-carotene bleaching was potentially performed by all EOs (66.48±2.41-94.06±2.68%), chloroform extracts (68.98±1.58-95.30±1.99%), and ethanolic extracts (62.15±2.51-92.36±1.15%). The antifungal activity of EOs and extracts was tested using the Minimum Inhibitory Concentration (MIC) and minimum fungicidal concentration (MFC). The EOs (0.1±0.00mg/mL-1.06±0.46mg/mL), chloroform (0.1±0.00 mg/mL-1.06±0.46mg/mL) and ethanol (0.1±0.00mg/mL-1.6±0.00 mg/mL) showed remarkable antifungal activity against mycotoxigenic Aspergillus genera. The MFC of EOs (1.0±0.34mg/mL and >4.8mg/mL), chloroform (0.26±0.11mg/mL and >1.6 mg/mL) and ethanol (0.2±0.00mg/mL and >1.6 mg/mL) were fungicidal in nature higher than MICs. The findings of the study indicated that Thymus spp. EOs and extracts could be used as natural alternatives for food industry. [ABSTRACT FROM AUTHOR] |
