In vitro antibacterial, antifungal and antioxidant activities of Eucalyptus spp. leaf extracts related to phenolic composition

Hosam O. Elansary, Mohamed Z.M. Salem, Nader A. Ashmawy, Kowiyou Yessoufou, Ahmed A.A. El-Settawy

Research output: Contribution to journalArticlepeer-review

47 Citations (Scopus)

Abstract

The crude methanolic extracts from leaves of Eucalyptus camaldulensis L., E. camaldulensis var obtusa and E. gomphocephala grown in Egypt were investigated to explore their chemical composition as well as their antibacterial, antifungal and antioxidant activities. Major phenolics found were ellagic acid, quercetin 3-O-rhamnoside, quercetin 3-O-b-D-glucuronide, caffeic acid and chlorogenic acid. The antioxidant activities were examined by the 2,2′-diphenypicrylhydrazyl (DPPH) and β-Carotene-linoleic acid assays. E. camaldulensis extracts showed the highest phenolic content, antioxidant and antimicrobial activities compared to other cultivars. MIC values reported for antibacterial activity of E. camaldulensis ranged from 0.08 μg/mL (Bacillus cereus) to 0.22 μg/mL (Staphylococcus aureus), while MBC values ranged from 0.16 μg/mL (Dickeya solani and B. cereus) to 0.40 μg/mL (S. aureus). The inhibitory activities against growth of bacteria and fungi used is an indication that E. camaldulensis a might be useful resource for the development and formulation of antibacterial and antifungal drugs.

Original languageEnglish
Pages (from-to)2927-2930
Number of pages4
JournalNatural Product Research
Volume31
Issue number24
DOIs
Publication statusPublished - 17 Dec 2017

Keywords

  • Eucalyptus leaves
  • antibacterial
  • antifungal
  • antioxidant
  • phenolics

ASJC Scopus subject areas

  • Analytical Chemistry
  • Biochemistry
  • Plant Science
  • Organic Chemistry

Fingerprint

Dive into the research topics of 'In vitro antibacterial, antifungal and antioxidant activities of Eucalyptus spp. leaf extracts related to phenolic composition'. Together they form a unique fingerprint.

Cite this