• The University of Western Australia (M504), 35 Stirling Highway, First Floor L Block, QEII Medical Centre, Nedlands

    6009 Perth


  • 3910 Citations
  • 22 h-Index
1995 …2022
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Personal profile


Dr Kate Hammer completed her undergraduate Bachelor of Science at Murdoch University before coming to The University of Western Australia in 1994 to undertake a Post-Graduate Diploma of Science in microbiology. She then worked as a Research Assistant in the Tea Tree Oil group before completing her PhD on the anti-fungal activity of tea-tree oil. She is now a Lecturer at UWA.

Funding overview

AgriFutures Australia (formerly Rural Industries Research and Development Corporation)
Raine Medical Research Foundation

Current projects

Dr Connie Locher, Pharamcy, UWA
Dr Gavin Flemmatti, Chemistry, UWA
Dr Christine Carson, Microbiology, UWA
Professor Thomas Riley, Microbiology, UWA

Teaching overview

Dr Hammer is unit coordinator for a number of undergraduate and postgraduate Microbiology units.


Dr Hammer is currently researching the antibacterial activity of Australian honeys, in particular those from Western Australia.

She has previously investigated the possibility that Gram positive bacteria, such as Staphylococcus, could become resistant to Melaleuca alternifolia (tea tree) oil. Her tests showed that the bacteria do not acquire resistance to tea tree oil, probably because it is such a complex essential oil. Tea tree oil has over 100 components, which may make it very difficult for organisms to evolve coping mechanisms.


  • Antifungal agents
  • Antibacterial agents
  • Antimicrobial agents
  • Bioactive plant compounds
  • Alternative therapies—infectious diseases
  • Medicinal properties of native plants
  • Plant essential oils
  • Tea tree oil
  • Honey—antimicrobial activity
  • Infectious diseases—alternative therapies

Fingerprint Fingerprint is based on mining the text of the person's scientific documents to create an index of weighted terms, which defines the key subjects of each individual researcher.

  • 2 Similar Profiles
Tea Tree Oil Medicine & Life Sciences
Melaleuca Medicine & Life Sciences
Volatile Oils Medicine & Life Sciences
Clostridium difficile Medicine & Life Sciences
Malassezia Medicine & Life Sciences
Microbial Sensitivity Tests Medicine & Life Sciences
Staphylococcus aureus Medicine & Life Sciences
Candida albicans Medicine & Life Sciences

Network Recent external collaboration on country level. Dive into details by clicking on the dots.

Research Output 1995 2018

Antibacterial compounds from the Australian native plant Eremophila glabra

Algreiby, A. A., Hammer, K. A., Durmic, Z., Vercoe, P. & Flematti, G. R., 1 Apr 2018, In : Fitoterapia. 126, p. 45-52 8 p.

Research output: Contribution to journalArticle

Eremophila Plant
Microbial Sensitivity Tests
Staphylococcus epidermidis

Antimicrobial Activity of Several Cineole-Rich Western Australian Eucalyptus Essential Oils

Aldoghaim, F. S., Flematti, G. R. & Hammer, K. A., Dec 2018, In : Microorganisms. 6, 4, 11 p., 122.

Research output: Contribution to journalArticle

Open Access

Effect of natural products on the production and activity of Clostridium difficile toxins in vitro

Roshan, N., Riley, T. V., Knight, D. R. & Hammer, K. A., 1 Dec 2018, In : Scientific Reports. 8, 1, 15735.

Research output: Contribution to journalArticle

Open Access
Clostridium difficile
Biological Products
Neutral Red
2 Citations (Scopus)

Effects of natural products on several stages of the spore cycle of Clostridium difficile in vitro

Roshan, N., Riley, T. V. & Hammer, K. A., 1 Sep 2018, In : Journal of Applied Microbiology. 125, 3, p. 710-723 14 p.

Research output: Contribution to journalArticle

Clostridium difficile
Biological Products
6 Citations (Scopus)

Non-conventional antimicrobial and alternative therapies for the treatment of Clostridium difficile infection

Roshan, N., Hammer, K. A. & Riley, T. V., 1 Feb 2018, In : Anaerobe. 49, p. 103-111 9 p.

Research output: Contribution to journalReview article

Clostridium Infections
Clostridium difficile
Complementary Therapies
Pseudomembranous Enterocolitis

Projects 1999 2022