Quantitative determinations on commercial samples of Melissae folium and their antioxidant activity

Abstract

Background and Aims: Melissa officinalis L. (lemon balm) is a perennial herb. Melissae folium and their preparations have been used for their sedative, spasmolytic and antibacterial actions. The study was aimed to investigate the qualities and also to compare the antioxidant activity potentials of the drug samples available in herbal markets and pharmacies in Turkey Methods: The percentages of the loss on drying and total ash were determined by gravimetric method and the percentage of total hydroxycinnamic derivatives was calculated by a spectrophotometric method according to European Pharmacopoeia. Drug samples were investigated for their potentials to scavenge the DPPH radical by using an in vitro method. Results: The percentages of the loss on drying were found to be between 8.51-16.53 %; whereas total ash amounts were determined between 9.41-11.33%. The percentage of total hydroxycinnamic derivatives was found in the range of 4.45-12.97 %. The extracts of the samples were found to have DPPH radical scavenging activity with EC50 values ranging from 10.60 to 19.10 μg/ml. Conclusion: In the assays for total ash and quantification of total hydroxy cinnamic derivatives all of the examined commercial samples were found to be compatible with standards in European Pharmacopoeia. Among the tested samples; a sample sold in pharmacy seems to have the best quality when its compared with the standards in European Pharmacopoeia.

Keywords

• Melissae folium
• European Pharmacopoeia
• quality control analysis

Supporting Institution

Ege University Research Fund

Project Number

14-ECZ-009

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