Most recent (2012 onwards)

• Thomsen NA, Hammer KA, Riley TV, Van Belkum A, Carson CF. Effect of habituation to tea tree (Melaleuca alternifolia) oil on the subsequent susceptibility of Staphylococcus spp. to antimicrobials, triclosan, tea tree oil, terpinen-4-ol and carvacrol. Int J Antimicrob Agents. 2013 Apr;41(4):343-51.
• Greay SJ, Hammer KA. 2012. Recent developments in the bioactivity of mono- and diterpenes: anticancer and antimicrobial activity. Phytochemistry Reviews. Accepted for publication 29 Apr 2011. DOI: 10.1007/s11101-011-9212-6.
• Ireland DJ, Greay SJ, Hooper CM, Kissick HT, Filion P, Riley TV, Beilharz MW. 2012. Topically applied Melaleuca alternifolia (tea tree) oil causes direct anti-cancer cytotoxicity in subcutaneous tumour bearing mice. J Dermatol Sci. 67:120-9.
• Hammer KA, Heel KA. 2012. Use of multiparameter flow cytometry to determine the effects of monoterpenoids and phenylpropanoids on membrane polarity and permeability in staphylococci and enterococci. International Journal of Antimicrobial Agents. Accepted for publication 12 June 2012
• Sudjana AN, Carson CF, Carson KC, Riley TV, Hammer KA. 2012. Candida albicans adhesion to human epithelial cells and polystyrene and formation of biofilm is reduced by sub-inhibitory Melaleuca alternifolia (tea tree) essential oil. Medical Mycology. Accepted for publication 2 April 2012
• Hammer KA, Carson CF, Riley TV. 2012. Effects of Melaleuca alternifolia (tea tree) essential oil and the major monoterpene component terpinen-4-ol on the development of single- and multi-step antibiotic resistance and antimicrobial susceptibility. Antimicrobial Agents and Chemotherapy. 56: 909-915

2005 - 2011

• Thomsen PS, Jensen TM, Hammer KA, Carson CF, Mølgaard P, Riley TV. 2011. Survey of the antimicrobial activity of commercially available Australian tea tree (Melaleuca alternifolia) essential oil products in vitro. Journal of Alternative and Complementary Medicine 17: 835-41
• Greay SJ, Ireland DJ, Kissick HT, Heenan PJ, Carson CF, Riley TV, Beilharz MW. 2010. Inhibition of established subcutaneous murine tumour growth with topical Melaleuca alternifolia (tea tree) oil. Cancer Chemother Pharmacol. 66:1095-102.
• Greay SJ, Ireland DJ, Kissick HT, Levy A, Beilharz MW, Riley TV, Carson CF. 2010. Induction of necrosis and cell cycle arrest in murine cancer cell lines by Melaleuca alternifolia (tea tree) oil and terpinen-4-ol. Cancer Chemother Pharmacol. 65:877-88.
• Thomsen NA, Hammer KA, Riley TV. 2010. Tea-tree oil – a naturally occurring biocide. Microbiology Australia 31: 182-4
• Hammer KA, Carson CF, Riley TV. 2008. Frequencies of resistance to Melaleuca alternifolia (tea tree) oil and rifampicin in Staphylococus aureus, Staphylococcus epidermidis and Enterococcus faecalis. International Journal of Antimicrobial Agents 32: 170-173.
• Hammer KA, Carson CF, Tan T-J, Riley TV. 2008. Effects of tea tree oil on biofilm formation. RIRDC Project PRJ-000451. RIRDC publication 08/140; ISBN 1 74151 729 X; ISSN 1440-6845. 33pp
• Hammer KA, Carson CF. Riley TV, Nielsen JB. 2006. A review of the toxicity of Melaleuca alternifolia (tea tree) oil. Food & Chemical Toxicology 44: 616-25
• Carson CF, Hammer KA, Riley TV. 2006. Melaleuca alternifolia (tea tree) oil: a review of antimicrobial and other medicinal properties. Clinical Microbiology Reviews 19: 50-62
• Messager S. Hammer KA. Carson CF. Riley TV. 2006. Sporicidal activity of tea tree oil. Australian Infection Control 11: 112-21
• Papadopoulos CJ, Carson CF, Hammer KA, Riley TV. 2006. Susceptibility of pseudomonads to Melaleuca alternifolia (tea tree) oil and components. Journal of Antimicrobial Chemotherapy 58: 449-51
• Carson CF, Papadopoulos CJ, Hammer KA, Riley TV. 2005. Tolerance of Pseudomonas aeruginosa to tea tree oil. RIRDC project UWA-79A. RIRDC publication 05/126; ISBN 1 74151 189 5; ISSN 1440-6845, 42pp
• Messager S, Hammer KA, Riley TV. 2005. Assessing the in situ efficacy of tea tree oil as a topical antiseptic. RIRDC Project UWA-72A. RIRDC publication 05/113; ISBN 1 74151 176 3; ISSN 1440-6845, 63pp
• Messager S, Hammer KA, Carson CF, Riley TV. 2005. Effectiveness of hand-cleansing formulations containing tea tree oil assessed ex vivo on human skin and in vivo with volunteers using European standard EN 1499. Journal of Hospital Infection 59: 220-8
• Messager S, Hammer KA, Carson CF, Riley TV. 2005. Assessment of the antibacterial activity of tea tree oil using the European EN 1276 and EN 12054 standard suspension tests. Journal of Hospital Infection 59: 113-25
• Carson CF, Hammer KA, Messager S, Riley TV. 2005. Tea tree oil: a potential alternative for the management of methicillin-resistant Staphylococcus aureus (MRSA). Australian Infection Control 10: 32-4
• Hammer KA, Carson CF & Riley TV. 2005. Nature's antiseptic. Inform AOCS 16(9): 546-7

2000 - 2004

• Hammer KA, Carson CF & Riley TV. 2004. Effects of tea tree oil on Staphylococcus aureus virulence factors. RIRDC project UWA-80A. RIRDC publication 05/115; ISBN 1 74151 178 X; ISSN 1440-6845, 34pp
• Longbottom CJ. Carson CF. Hammer KA. Mee BJ. Riley TV. 2004. Tolerance of Pseudomonas aeruginosa to Melaleuca alternifolia (tea tree) oil is associated with the outer membrane and energy-dependent cellular processes. Journal of Antimicrobial Chemotherapy 54: 386-92
• Hammer KA, Carson CF & Riley TV. 2004. Antifungal effects of tea tree oil and components against Candida albicans, Candida glabrata and Saccharomyces cerevisiae. Journal of Antimicrobial Chemotherapy 53: 1081-5
• Hammer KA, Carson CF & Riley TV. 2003. Antifungal activity of the components of Melaleuca alternifolia (tea tree) oil. Journal of Applied Microbiology 95: 853-60
• Hammer KA, Dry L, Johnson M, Michalak EM, Carson CF & Riley TV. 2003. Susceptibility of oral bacteria to Melaleuca alternifolia (tea tree) oil in vitro. Oral Microbiology and Immunology 18: 389-92
• Carson CF, Hammer KA & Riley TV. 2003. Compilation and review of published and unpublished tea tree oil literature. RIRDC Project UWA-75A, RIRDC publication R03/019, 95pp
• Hammer KA, Carson CF & Riley TV. 2003. The antifungal activity of tea tree oil in vitro. RIRDC Project UWA-58A, RIRDC publication R03/020, 69pp
• Carson CF, Mee BJ & Riley TV.  Mechanism of action of Melaleuca alternifolia (tea tree) oil on Staphylococcus aureus determined by time-kill, lysis, leakage and salt tolerance assays and electron microscopy. Antimicrobial Agents and Chemotherapy 46: 1914-1920. 
• Hammer KA, Carson CF & Riley TV. 2002. In vitro activity of Melaleuca alternifolia (tea tree) oil against dermatophytes and other filamentous fungi. Journal of Antimicrobial Chemotherapy 50: 195-9
• Hammer KA, Dry L, Johnson M, Michalak EM, Carson CF & Riley TV. 2002. Antimicrobial activity of tea tree oil against oral microorganisms. RIRDC Project UWA-55A, RIRDC publication R03/019, 23pp
• Carson CF, Ashton L, Dry L, Smith DW, Riley TV. 2001. Melaleuca alternifolia (tea tree) oil gel (6%) for the treatment of recurrent herpes labialis. Journal of Antimicrobial Chemotherapy 48: 450-451.
• Hammer KA, Carson CF & Riley TV. 2001. Anti-fungal activity of tea tree oil. RIRDC project UWA 50A, RIRDC publication R01/11, 25pp
• Van Heerden P, Niazov S, Webb A, Carson C, Hammer K, Riley T, Parsons R, Tinley P. 2001. The effect of tea tree oil on pedal flora. Australasian Journal of Podiatric Medicine 35: 103-6.
• Caelli M. Porteous J. Carson CF. Heller R. Riley TV. 2000. Tea tree oil as an alternative topical decolonisation agent for methicillin-resistant Staphylococcus aureus. J Hospital Infection 46: 236-237.
• Hammer KA, Carson CF & Riley TV. 2000. Melaleuca alternifolia (tea tree) oil inhibits germ tube formation by Candida albicans. Medical Mycology 38: 355 - 62
• Hammer KA, Carson CF & Riley TV. 2000. In vitro activities of ketoconazole, econazole, miconazole and Melaleuca alternifolia (tea tree) oil against Malassezia species. Antimicrobial Agents and Chemotherapy 44: 467-9
• Hammer KA, Carson CF & Riley TV. 2000. Antimicrobial activity of essential oils and other plant extracts. Simply Essential 36: 18-22

1999 and older

• Hammer KA, Carson CF & Riley TV. 1999. Antimicrobial activity of essential oils and other plant extracts. Journal of Applied Microbiology 86: 985-90
• Hammer KA, Carson CF & Riley TV. 1999. Influence of organic matter, cations and surfactants on the antimicrobial activity of Melaleuca alternifolia (tea tree) oil in vitro.  Journal of Applied Microbiology 86: 446-52
• Hammer KA, Carson CF & Riley TV. 1999. In vitro susceptibility of lactobacilli and organisms associated with bacterial vaginosis to Melaleuca alternifolia (tea tree) oil. Antimicrobial Agents and Chemotherapy 43: 196
• Greig JE, Carson CF, Stuckey MS, Riley TV. 1999. Skin sensitivity testing for tea tree oil. RIRDC Project No UWA-42A. RIRDC Publication No 99/76. 44 pp
• Carson CF, Riley TV. 1999. Antimicrobial activity of tea tree oil. RIRDC Project UWA-24A, RIRDC Publication No 98/70, 52pp.
• Hammer KA, Carson CF & Riley TV. 1998. In-vitro activity of essential oils, in particular Melaleuca alternifolia (tea tree) oil and tea tree oil products, against Candida species. Journal of Antimicrobial Chemotherapy 42: 591-5
• Carson CF, Hammer KA, Riley TV. 1998. A brief review of the antifungal activity of the essential oil of Melaleuca alternifolia (tea tree oil). Mikologia Lekarska 5: 205-7
• Carson CF, Hammer KA, Riley TV. 1997. Use of the essential oil of Melaleuca alternifolia (tea tree oil) in cutaneous fungal infections. Journal of British Podiatric Medicine 52: iv-v
• Hammer KA, Carson CF and Riley TV. 1997. In vitro susceptibility of Malassezia furfur to the essential oil of Melaleuca alternifolia. Journal of Medical and Veterinary Mycology 35: 375-7
• Carson CF, Hammer KA & Riley TV. 1996. In vitro activity of the essential oil of Melaleuca alternifolia against Streptococcus spp. Journal of Antimicrobial Chemotherapy 37: 1177-8
• Hammer KA, Carson CF & Riley TV. 1996. Susceptibility of transient and commensal skin flora to the essential oil of Melaleuca alternifolia (tea tree oil). American Journal of Infection Control 24: 186-9
• Carson CF, Riley TV. 1995. Antimicrobial activity of the major components of the essential oil of Melaleuca alternifolia.   
• Carson CF, Hammer KA & Riley TV. 1995. Broth microdilution method for determining the susceptibility of Escherichia coli and Staphylococcus aureus to the essential oil of Melaleuca alternifolia (tea tree oil). Microbios 82: 181-5
• Carson CF, Cookson BD, Farrelly HD, Riley TV. 1995. Susceptibility of methicillin-resistant Staphylococcus aureus to the essential oil of Melaleuca alternifolia. Journal of Antimicrobial Chemotherapy. 35: 421-424 
• Carson CF, Riley TV. 1994. The antimicrobial activity of tea tree oil. Med J Aust. 160(4):236
• Carson CF, Riley TV. 1993. Antimicrobial activity of the essential oil of Melaleuca alternifolia. Letters in Applied Microbiology 16, 49-55

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