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01.12.2018 | Research article | Ausgabe 1/2018 Open Access

BMC Complementary Medicine and Therapies 1/2018

Glycyrrhiza glabra HPLC fractions: identification of Aldehydo Isoophiopogonone and Liquirtigenin having activity against multidrug resistant bacteria

Zeitschrift:
BMC Complementary Medicine and Therapies > Ausgabe 1/2018
Autoren:
Hazir Rahman, Ilyas Khan, Anwar Hussain, Abdelaaty Abdelaziz Shahat, Abdul Tawab, Muhammad Qasim, Muhammad Adnan, Mansour S. Al-Said, Riaz Ullah, Shahid Niaz Khan

Abstract

Background

Medicinal plants have been founded as traditional herbal medicine worldwide. Most of the plant’s therapeutic properties are due to the presence of secondary metabolites such as alkaloids, glycosides, tannins and volatile oil.

Methods

The present investigation analyzed the High-Pressure Liquid Chromatography (HPLC) fractions of Glycyrrhiza glabra (Aqueous, Chloroform, Ethanol and Hexane) against multidrug resistant human bacterial pathogens (Escherichia coli, Acinetobacter baumannii, Staphylococcus aureus and Pseudomonas aeruginosa). All the fractions showed antibacterial activity, were subjected to LC MS/MS analysis for identification of bioactive compounds.

Results

Among total HPLC fractions of G. glabra (n = 20), three HPLC fractions showed potential activity against multidrug resistant (MDR) bacterial isolates. Fraction 1 (F1) of aqueous extracts, showed activity against A. baumannii (15 ± 0.5 mm). F4 from hexane extract of G. glabra showed activity against S. aureus (10 ± 0.2 mm). However, F2 from ethanol extract exhibited activity against S. aureus (10 ± 0.3 mm). These active fractions were further processed by LC MS/MS analysis for the identification of compounds. Ellagic acid was identified in the F1 of aqueous extract while 6-aldehydo-isoophiopogonone was present in F4 of hexane extract. Similarly, Liquirtigenin was identified in F2 of ethanol.

Conclusions

Glycyrrhiza glabra extracts HPLC fractions showed anti-MDR activity. Three bioactive compounds were identified in the study. 6-aldehydo-isoophiopogonone and Liquirtigenin were for the first time reported in G. glabra. Further characterization of the identified compounds will be helpful for possible therapeutic uses against infectious diseases caused by multidrug resistant bacteria.
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