Australian Lemon Myrtle (Backhousia citriodora): Dense Citral Isomers (Geranial & Neral), Airway Purification, and Microbial Defense

The "Queen of Lemon Herbs" of the Subtropical Australian Rainforest

Native to the coastal subtropical rainforests of Queensland and New South Wales, Lemon Myrtle (Backhousia citriodora) produces glossy, dark green leaves that release an overwhelmingly clean, sweet lemon aroma when crushed. It possesses the highest natural citral concentration of any known plant species in the botanical kingdom.

1. Unmatched Citral Purity (90–98%)

While lemongrass contains roughly 70–75% citral and lemon peel contains only 3–5%:

• Backhousia citriodora Essential Oil: Contains up to 95% to 98% pure Citral (a natural isomeric blend of Geranial and Neral).


• Broad-Spectrum Atmospheric Sanitization: Diffused vapors demonstrate superior antimicrobial efficacy against airborne fungal spores and seasonal respiratory pathogens.


• Gastric Carminative: Dried leaf infusions provide crisp, caffeine-free digestive soothing.

2. References & Clinical Citations

• Hayes, A. J., & Markovic, B. (2002). Toxicity of Australian essential oil Backhousia citriodora (Lemon myrtle). Part 1. Antimicrobial activity and in vitro cytotoxicity. Food and Chemical Toxicology, 40(4), 535-543. [PubMed: 11893412]
• Wilkinson, J. M., et al. (2003). Bioactivity of Backhousia citriodora: antibacterial and antifungal activity. Journal of Agricultural and Food Chemistry, 51(1), 76-81.

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