Glossary
A premium dark amber honey produced by bees foraging on the blossoms of the jarrah tree (Eucalyptus marginata), a tall hardwood endemic to the forests of southwestern Western Australia. Jarrah honey has gained significant attention for its exceptionally high antimicrobial activity, measured by Total Activity (TA) ratings that can match or exceed Manuka honey.
While New Zealand's Manuka honey dominates the medicinal honey market, Australian jarrah honey has emerged as a credible competitor with documented antimicrobial activity. Jarrah honey's antimicrobial properties come primarily from hydrogen peroxide production (via glucose oxidase) rather than the methylglyoxal mechanism of Manuka. This different mechanism means jarrah honey can be effective against different bacterial strains.
TA (Total Activity) ratings for jarrah honey range from TA 10+ to TA 50+, indicating antimicrobial potency. Unlike Manuka's UMF/MGO ratings, the TA system measures total antimicrobial activity from all sources, including peroxide and non-peroxide mechanisms.
Jarrah honey has a rich, warm flavor with notes of caramel, toffee, and malt. It is sweeter and less medicinal-tasting than many Manuka honeys, making it more palatable as a table honey while still providing therapeutic benefits.
The jarrah tree blooms only every two years, making pure jarrah honey production cyclical and somewhat unpredictable. In non-blooming years, jarrah honey is simply unavailable, contributing to its premium pricing and limited supply.
Both have strong antimicrobial properties but through different mechanisms. Manuka relies primarily on methylglyoxal (non-peroxide activity). Jarrah relies primarily on hydrogen peroxide activity. Jarrah tends to have a better flavor for eating. Both are effective for wound care, and some studies suggest they complement each other.
TA (Total Activity) measures the total antimicrobial effect of the honey expressed as a percentage, equivalent to the concentration of phenol (carbolic acid) that would produce the same antimicrobial effect. A TA 30+ jarrah honey has antimicrobial activity equivalent to a 30 percent phenol solution.
Jarrah honey with TA ratings of 20+ has demonstrated antimicrobial activity comparable to medical-grade wound care honeys. While it is not FDA-approved as a medical device like Medihoney (Manuka-based), high-TA jarrah honey has legitimate antimicrobial properties.
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