代谢
苦杏仁苷是一种由葡萄糖、苯甲醛和氰化物组成的化学复合物,后者可以通过β-葡萄糖苷酶或乳化酶的作用释放出来。尽管这些酶在哺乳动物组织中不存在,但人类的肠道微生物群似乎拥有这些或类似的酶,能够促使氰化物的释放,导致人类中毒。因此,与静脉注射相比,通过口服途径摄入的苦杏仁苷可能毒性高达40倍。
AMYGDALIN IS A CHEMICAL COMBINATION OF GLUCOSE, BENZALDEHYDE, & CYANIDE FROM WHICH THE LATTER CAN BE RELEASED BY THE ACTION OF BETA-GLUCOSIDASE OR EMULSIN. ALTHOUGH THESE ENZYMES ARE NOT FOUND IN MAMMALIAN TISSUES, THE HUMAN INTESTINAL MICROFLORA APPEARS TO POSSESS THESE OR SIMILAR ENZYMES CAPABLE OF EFFECTING CYANIDE RELEASE RESULTING IN HUMAN POISONING. FOR THIS REASON AMYGDALIN MAY BE AS MUCH AS 40 TIMES MORE TOXIC BY THE ORAL ROUTE AS COMPARED WITH IV INJECTION.
来源:Hazardous Substances Data Bank (HSDB)