portant; animation-iteration-count: 1 !important; scroll-behavior: auto !important; transition-duration: 0.01ms !important;">留蘭香油系淡黃色至淡黃綠色液體，具有留蘭香葉片的清甜微涼的香味。相對密度為0.92~0.97，比旋光度-45°~-60°。主要成分為香芹酮（60%左右）、薄荷酮、異薄荷酮、胡薄荷酮、二氫香芹酮、檸檬烯、水芹烯、蒎烯、按葉油素、portant; animation-iteration-count: 1 !important; scroll-behavior: auto !important; transition-duration: 0.01ms !important;">二氫香芹醇portant; animation-iteration-count: 1 !important; scroll-behavior: auto !important; transition-duration: 0.01ms !important;">、3-辛醇、乙酸辛醇酯等。
portant; animation-iteration-count: 1 !important; scroll-behavior: auto !important; transition-duration: 0.01ms !important;">留蘭香亦稱綠薄荷或荷蘭薄荷。唇形科，產于中國、美國、意大利、巴西、日本、法國和南非。生產時采用留蘭香的新鮮莖葉，用portant; animation-iteration-count: 1 !important; scroll-behavior: auto !important; transition-duration: 0.01ms !important;">水蒸氣蒸餾法portant; animation-iteration-count: 1 !important; scroll-behavior: auto !important; transition-duration: 0.01ms !important;">蒸餾，得油率0.3%~0.4%。世界年產量1400t左右，我國年產量300t。