Tagged: electronic nose

Tieguanyin Means Two Things, and Chemistry Now Tells Which

Tieguanyin can mean a specific tea plant or any oolong roasted in its style, so a bag labeled that way answers nothing on its own. A new metabolomics study puts an exact chemical number on five Minnan cultivars instead, down to the microgram, and one of them turns out to carry three compounds none of the other four have at all.