ORIGINAL RESEARCH
Total Phenols Compounds, Ferric Reducing
Antioxidant Power and Scavenging Activities
of Thymus Vulgaris L. Crop Extracts: Analgesic,
Anti-Inflammatory, Anxiolytic, Antidepressant
Responses in Swiss Strain Male Albino Mice,
and Anti-Bacterial Effects
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Department of Pharmacology and Toxicology, Unaizah College of Pharmacy, Qassim University, Saudi Arabia
Submission date: 2023-06-15
Acceptance date: 2023-07-17
Online publication date: 2023-10-27
Publication date: 2023-11-10
Pol. J. Environ. Stud. 2023;32(6):5469-5481
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ABSTRACT
The purpose of this study was to identify the most important analgesic, anti-inflammatory,
anxiolytic, antidepressant, antioxidant and anti-bacterial effects of Thymus vulgaris L. crop extracts
obtained after optimization of extract time, temperature and speed conditions. Thyme crop extraction
was established through magnetic stirring (MST) using ethanol after optimization of conditions
using response surface methodology (RSM). Total phenols content (TPC), ferric reducing antioxidant
power (FRAP), and scavenging activity (DPPH) were evaluated and then animals were subjected
to Thyme extracts used for neuropharmacological and Antinociceptive properties determination by
different experiments. DPPH, FRAP and TPC of Thyme leaves were about 3652.69 mg TE/100g DW;
5835.96 mg TE/100g DW and 1243.73 mg GAE/100g DW, respectively, for a temperature extraction
(60ºC), time extraction (15 min) and speed extraction (600 rpm). The predicted values of DPPH, FRAP
and TPC represent 92%, 89% and 90%, respectively compared with experiment values. Extraction
temperature, extraction time and extraction speed affect positively on the DPPH, FRAP and TPC levels
(p<0.05). Animals treated with Thyme extract (250 mg/kg) presented potential neuropharmacological
and antinociceptive effects varied according to time of exposure. The promising neuropharmacological
and antinociceptive effects obtained from Thyme extracts can be enhanced. The effects of the plant
extracts analyzed vary widely not only from the plant species but also especially from the extraction conditions. The neuropharmacological and antinociceptive effects depend significantly on the treatment
time.