In vitro antimicrobial evaluation of commercial tea extracts against some pathogen fungi and bacteria

Yildirim N., Matpan Bekler F., Cikcikoglu Yildirim N., DİKİCİ A.

Digest Journal of Nanomaterials and Biostructures, vol.5, no.4, pp.821-827, 2010 (SCI-Expanded, Scopus) identifier

  • Publication Type: Article / Article
  • Volume: 5 Issue: 4
  • Publication Date: 2010
  • Journal Name: Digest Journal of Nanomaterials and Biostructures
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.821-827
  • Keywords: Antibacterial activity, Antifungal activity, Tea extracts
  • Uşak University Affiliated: Yes

Abstract

The in vitro antimicrobial activity of crude ethanol, methanol, hexane and aqueous extracts of commercial tea types such as fennel (Foeniculum sp.), senna (Cassia sp.), basil-rosemary (Ocimum sp.-Rosmarinus sp), daisy (Bellis sp.) and sage (Salvia sp) against pathogen fungi (Colletotrichum coccodes, Epicoccum nigrum, Scopulariopsis brevicaulis) and foodborne pathogen bacteria (Escherichia coli ATCC 25922, Staphylococcus aureus ATCC 25923, Bacillus cereus, Klebsiella pneumoniae, Enterobacter sp.) were investigated with disk diffusion method. Senna (Cassia sp.) exhibed the most effective antimicrobial activity in both ethanolic and methanolic extracts. The best antimicrobial effect (30.6 mm) against E. nigrium was seen in methanolic senna (Cassia sp.) extract. The results of the study indicate that commercial tea types have showed various levels of antimicrobial activity depend on the type of solvent used in the extraction procedure.