Tagged: volatile compounds

The Stem Concentrates Floral Compounds the Leaf Does Not

A 2025 tissue-level study found oolong's stem holds more of the compounds behind its floral scent than the leaf beside it. A 2022 study found adding stem to the blend lowers one of those same compounds in the finished tea. Neither team was answering the other's question, and nobody has reconciled the two.

A Rainy Pick Day Caps a Rock Tea's Aroma, and No Roast Recovers It

A 2025 GC-MS study found rainy-day-picked Wuyi rock tea carries 40 to 74 percent less floral and fruity aroma compound than sunny-day leaf, and processing cannot fully make up the deficit.

Agronomists Borrowed Oolong's Trade Secret, Not for Tea

A 2026 peer-reviewed study took the shaking-and-withering step that makes oolong oolong and ran it on tobacco leaf instead. The tobacco came out smelling less like itself and more like the process that shaped it.