半夏化学成分:
【化学成分】块茎含挥发油,内含主成分为3-乙酰氨基-5-甲基异唑(3-acetoamino-5-methylisooxazole),丁基乙烯基醚(butyl-ethyleneether),3-甲基二十烷(3-methyleicosane),十六碳烯二酸(hexadecylendioicacid),还有2-氯丙烯酸甲酯(methyl-2-chloropropenoate),茴香脑(anethole),苯甲醛(benzaldehyde),1,5-戊二醇(1,5-pentadiol),2-甲基吡嗪(2-methylpyrazine),柠檬醛(ciTCMLIBal),1-辛烯(1-octene),β榄香烯(β-elemene),2-十一烷酮(2-undecanone),9-十七烷醇(9-heptadecanol),棕榈酸乙酯(ethylpalmitate),戊醛肟(pentaldehydeoxime)等60多种成分。还含左旋麻黄碱(ephedrine),胆碱(choline),β-谷甾醇(β-ssitosterol),胡萝卜甙(daucosterol),尿黑酸(homogentisicacid),原儿茶醛(protocatechualdehyde),姜辣烯酮(shogaol),黄芩甙(baicaline),黄芩甙元(baicalein),姜辣醇(gingerol),1,2,3,4,6-五-O-没食子酰葡萄糖(1,2,3,4,6-penta-Ogalloylglucose),12,13-环氧-9-羟基十九碳-7,10-二烯酸(12,13-epoxy-9-hydroxynonadeca-7,10-dienoicacid)及基衍生物等。又含以α-及β-氨基丁酸(aminobutyricaci