Comminution of Plant Material and Its Effect on the Quality of Rose-Scented Geranium (PelargoniumSpecies) Oil

Comminuted (chopped into small pieces or churned into a semi-paste in a mixer-grinder) and uncomminuted shoot and leaf oils of rose-scented geranium were compared for their yield and composition. Leaves produced higher oil yields (0.28-0.38%) than shoots (0.15-0.24%). Leaf oil was richer in geraniol, 10-epi-γ-eudesmol, citronellyl and geranyl tiglates, while the shoot oil was richer in (Z)-3-hexenol, cis-rose oxide, isomenthone, citronellol,...