Published in Scientific Works. Series C. Veterinary Medicine, Vol. LXVI, Issue 2
Written by Corina PREDESCU, Camelia PAPUC, Georgeta ȘTEFAN, Carmen PETCU
The aim of the present study was to compare the antioxidant and antibacterial properties of summer savory (Satureja hortensis L.) from Muscel County flora (Romania) and wild thyme (Thymus serpyllum) from Lebanon. The aerial parts of plants were harvested in august, dried quickly and alcoholic extracts were prepared. Total phenolic content (TPC), total flavonoid content (TFC), DPPH radical scavenging activity, ferric reducing antioxidant power (FRAP) value, and antimicrobial properties were determined using the extracts. TPC showed that Lebanon thyme had higher concentration compared with Romanian thyme (13.78 ± 0.95 mg GAE/g DW and 12.14 ± 0.97 mg GAE/g DW, respectively). DPPH• was calculated as IC50 and the sample results were compared with gallic acid. FRAP results showed similar values 42.71 ± 4.24 μM Fe+2/g DW (Romanian thyme) and 39.55 ± 4.21 μM Fe+2/g DW (Lebanon thyme). The antibacterial activity of summer savory was found to have maximum effect against Staphylococcus aureus ATCC 9144. Bioactive compounds, measured as total phenolic content, were in higher concentration in both extracts which also relates to their antioxidant and antibacterial activities.
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