薄荷鲜叶含渍1%-1.46%,油中主成分为左旋薄荷醇(menthol),含量62.3%-87.2%,还含左旋薄荷酮(menthone)异薄荷酮(isomenthone),胡薄荷酮(pulegone),乙酸癸酯(decylacetate),乙酸薄荷酯(menthylacetate)苯甲酸甲酯(methylbenzoate),α-及β-蒎烯(pinene),β-侧柏烯(β-thu-jene),3-戊醇(3-pentol),2-已醇(2-hexanol),3-辛醇(3-octanol),右旋月桂烯(myrcene),柠檬烯(limonene)及桉叶素(cineole),α-松油醇(α-terpineol)等[1]。又含黄酮类成分:异瑞福灵(iso-raifolin(,木犀草素-7-葡萄糖甙(luteolin-7-glucoside),薄荷异黄酮甙(methoside);有机酸成分:迷迭香酸(lusmarinicacid),咖啡酸(caffeicacid)[2];氯基酸成分:天冬氨酸(asparticacid),谷氨酸(glutamicacid),丝氨酸(alanine),天冬酰胺(asparagine),缬氨酸(valine),亮氨酸(leuine)和异亮氨酸(isoleucine),苯丙氨酸(phenylalanine),蛋氨酸(methionine)赖氨酸(lysine)[3]。最近,又从叶中分阶段得具抗炎作用的以二羟基-1,2-二氢萘二羟酸为母核的多种成分:①1-(3,4-二羟基苯基)-6,7-二羟基-1,2-二氢萘-2,3二羟酸[1-(3,4-dihydroxyphenyl)-6,7-dihydroxy-1,2-dihy-dronaphthalene-2,3-dicarboxylicacid],②1-(3,4-二羟基苯基-1,2-二氢萘-2-羟酸{1-(3,4-dihydroxyphenyl)-3-[2-(3,4-dihydrox-yphenyl)-1-carboxy]ethoxycarbonyl-6,7-dihydroxy-1,2-dihydron-aphthalene-2-carboxylicacid}[4],③7,8-二羟基-2-(3,4-二羟基苯基)-1,2-二氢萘-1,3-二羟酸[7,8-dihydroxy-2-(3,4-dihydrox-yphenyl)-1,2-dihydronaphthalene-1,3-dicarboxylicacid],④1-[2-3,4-二羟基苯基)-1-羟基]乙氧基羰基-2-(3,4-二羟基苯基)-7,8-二羟基-1,2-二氢萘-3-羟酸{1-[2-(3,4-dihydroxyphenyl)-1-car-boxy]ethoxycarbonyl-2-(3,4-dihydroxyphenyl)-7,8-dihydroxy-1,2-dihydronaphthalene-3-carboxylicacid}-7,8-dihydroxy-1,2-dihydronaphthalene-3-carboxylicacid},⑤3-[2-(3,4-二羟基苯基)-1-羟基]乙氧基羟基-2-(3,4-二羟基苯基)-7,8-二羟基-1,2-二氢萘-1-羟酸{3-[2-(3,4-dihydroxyphenyl)-1-carboxy]ethoxy-carbonyl-2-(3,4-dihydroxyphenyl)-7,8-dihydroxy-1,2-dihydron-aphthalene-1-carboxylicacid},⑥1,3-双[2-(3,4-二羟基苯基)-1-羟基]乙氧基羰基-2-(3,4-二羟基苯基)-7,8-二羟基-1,2-二氢萘{1,3-bis-[2-(3,4-dihydroxyphenyl)-1-carboxy]ethoxycarbonyl-2-(3,4-dihydroxyphenyl)-7,8-dihydroxy-1,2-dihydronaphthalene},⑦1-[2-(3,4-二羟基苯基)-1-甲氧基羰基]乙氧基羰基-2-(3,4-二羟基苯基)-3-[2-(3,4-二羟基苯基)-1-羟基]乙氧基羰基-7,8-二羟基-1,2-二氢萘{1-[2-(dihydroxyphenyl)-1-methoxycar-bonyl]ethoxycarbonyl-2-(3,4-dihydroxypheny)-3-[2-(3,4-dihy-droxyphenyl)-1-carboxy]ethoxycarbonyl-7,8-dihydroxy-1,2-dihy-dronaphthalene},⑧1-[2-(3,4-二羟基苯基)-1-羟基]乙氧基羰基-2-(3,4-二羟基苯基)-3-[2-(3,4-二羟基苯基)-1-甲氧基羰基]乙氧基羰基-7,8-二羟基-1,2-二氢萘{1-[2[(3,4-dihydroxyphenyl)-1-carboxy]ethoxycarbonyl-2-(3,4-dihydroxyphenyl)-3-[2-(3,4-di-hydroxyphenyl)-1-methoxycarbonyl]ethoxycarbonyl-7,8dihydro-xy-1,2-dihydronaphthalene},⑨1,3-双[2-(3,4-二羟苯基)-7,8-二羟基-1,2-二氢萘{1,3-bis-2-(3,4-dihydroxyphenyl)-1-methoxycarbonyl]ethoxycarbonyl-2-(3,4-dihydroxyphenyl)-7,8-dihydroxy-1,2-di-hydronaphthalene}[5],右旋的8-,酰氧基莳萝艾菊酮(8-acetoxy-carvotanacetone)[6]。
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