Hafiz Amir Nadeem, Muhammad Pervaiz, Anam Ejaz, Zohaib Saeed, Muhammad Imran, Rana Rashad Mahmood Khan, Umer Younas

Comparative phytochemical study of methanolic and ethanolic extracts of Thymus linearis and their antibacterial and antioxidant potential

  • Clinical Biochemistry
  • Drug Discovery
  • Pharmacology
  • Molecular Biology
  • General Medicine
  • Biochemistry
  • Analytical Chemistry

AbstractThymus linearis (Thyme) is a medicinal plant widely distributed throughout Asia. Various parts of thyme are utilized for diverse medicinal purposes, including its use as a tonic and diuretic, for cough relief, as a flavoring agent, in treating dysentery, and for alleviating stomach disorders. Numerous studies have been conducted to explore the unexploited potential of thyme. Thyme was collected from the northern region of Pakistan, and sun‐mediated extraction was conducted. Phytochemical analysis, utilizing GC–MS, revealed numerous bioactive phytochemical constituents with disease‐preventing roles, including detoxifying agents, antioxidants, anticancer compounds, dietary fiber, neuropharmacological agents, and immunity‐potentiating agents, in the methanolic and ethanolic (14 days) extracts of the flower, leaf, and stem. The 1,1‐diphenyl‐2‐picrylhydrazyl (DPPH) assay results indicated that the ethanolic and methanolic extracts of the stem exhibited the highest antioxidant activity, reaching up to 67.34% and 62.73%, respectively, while the values for the flower and leaf extracts (both methanol and ethanol) were around 60%. The IC50 (half maximal inhibitory concentration) values were also calculated for all the samples, ranging between 7 and 9 μg/mL. Positive antibacterial and antifungal effects against Bacillus subtilis and Escherichia coli, as well as Aspergillus niger (fungi), were observed only in the extracts of the flower (both methanol and ethanol). The sun‐mediated technique was used for extraction for the first time in this study. Therefore, this study introduces a novel approach to the extraction of bioactive compounds from medicinal plants, ultimately contributing to the development of herbal drugs with more convenient and cost‐effective methods.

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