ANALYTICAL LETTERS, cilt.1, sa.1, ss.1-11, 2024 (SCI-Expanded)
growing steadily due to their extensive utilization in traditional medicine,
food industry, and pharmaceutical sector, owing to their abundance
in essential oil and phytochemical content, rendering them
commercially significant species. The current work focuses on conducting
a comprehensive analysis of the ethanol extract and essential
oil derived from the root and aerial portions of Thymus
brachychilus Jalas, an endemic species that has not been previously
investigated. Additionally, a novel GC-MS (gas chromatography–mass
spectrometry) technique was developed to quantify the levels of triterpenoids,
which are frequently found in many plants, particularly
those belonging to the Lamiaceae family. The approach was then
used to assess the triterpenoid content of the species. While the
phenolic content of the species was determined by LC-MS/MS (liquid
chromatography–tandem mass spectrometry), the chemical composition
of triterpenoid, essential oil and flavor (aroma) of the plant was
determined by GC-MS. Eucalyptol was the primary ingredient in both
the essential oil and the flavor, accounting for 11.05% and 12.35%,
respectively. In the DPPH and ABTS radical scavenging techniques,
the root ethanol extract exhibited the greatest antioxidant activity
with IC50 values of 26.70 ± 0.23 and 19.16 ± 0.11 mg/mL, respectively.
There was a high level of urease (59.54 ± 1.67% at 100 mg/mL) inhibitory
activity observed in the root ethanol extract in enzyme inhibition
assays, as well as angiotensin (94.80 ± 0.56%), elastase
(40.19 ± 0.39%), and collagenase (48.26 ± 0.12%) inhibition in the aerial
ethanol extract. Moreover, the MCF-7 cell line for breast cancer
had a strong cytotoxic impact when exposed to the essential oil of
the species (vitality%: 1.45 ± 0.01 at 200 mg/mL. The LC-MS/MS and
GC-MS studies revealed that the roots had a significant concentration
of rosmarinic acid (15,801 mg analyte/g extract), but the aerial
portions had a substantial quantity of ursolic acid (152,374 mg analyte/
g extract). The plant exhibits potential in the food, cosmetic,