portant; animation-iteration-count: 1 !important; scroll-behavior: auto !important; transition-duration: 0.01ms !important;">留兰香油系淡黄色至淡黄绿色液体，具有留兰香叶片的清甜微凉的香味。相对密度为0.92~0.97，比旋光度-45°~-60°。主要成分为香芹酮（60%左右）、薄荷酮、异薄荷酮、胡薄荷酮、二氢香芹酮、柠檬烯、水芹烯、蒎烯、按叶油素、portant; animation-iteration-count: 1 !important; scroll-behavior: auto !important; transition-duration: 0.01ms !important;">二氢香芹醇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;">留兰香亦称绿薄荷或荷兰薄荷。唇形科，产于中国、美国、意大利、巴西、日本、法国和南非。生产时采用留兰香的新鲜茎叶，用portant; animation-iteration-count: 1 !important; scroll-behavior: auto !important; transition-duration: 0.01ms !important;">水蒸气蒸馏法portant; animation-iteration-count: 1 !important; scroll-behavior: auto !important; transition-duration: 0.01ms !important;">蒸馏，得油率0.3%~0.4%。世界年产量1400t左右，我国年产量300t。