Observatoire des droits humains (anglais seulement)

From river stain to your cup of tea: the secret world of tannins

(Version anglaise seulement)

par Gregory Moore, Senior Research Associate, School of Agriculture, Food and Ecosystem Sciences, The University of Melbourne

While stopped in heavy Melbourne traffic recently, I noticed that what looked like a shadow under a row of spotted gums (Corymbia maculata) along a major road was actually a stain on the concrete kerb.

As a botanist, it caught my attention; biological stains always have an interesting story attached.

Stains like these – under many tree species, on your car after certain leaves have fallen on them, and on your timber deck after rain has washed leaves onto it –…

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