The enzymic hydrolysis of amygdalin

Biochem J. 1967 May;103(2):528-34. doi: 10.1042/bj1030528.


Chromatographic examination has shown that the enzymic hydrolysis of amygdalin by an almond beta-glucosidase preparation proceeds consecutively: amygdalin was hydrolysed to prunasin and glucose; prunasin to mandelonitrile and glucose; mandelonitrile to benzaldehyde and hydrocyanic acid. Gentiobiose was not formed during the enzymic hydrolysis. The kinetics of the production of mandelonitrile and hydrocyanic acid from amygdalin by the action of the beta-glucosidase preparation favour the probability that three different enzymes are involved, each specific for one hydrolytic stage, namely, amygdalin lyase, prunasin lyase and hydroxynitrile lyase. Cellulose acetate electrophoresis of the enzyme preparation showed that it contained a number of enzymically active components.

MeSH terms

  • Aldehydes / analysis
  • Buffers
  • Chemical Phenomena
  • Chemistry
  • Chromatography, Thin Layer
  • Colorimetry
  • Cyanides / analysis
  • Disaccharides / analysis
  • Electrophoresis
  • Glucose / analysis
  • Glucosidases*
  • Glycosides*
  • Hydrogen Cyanide
  • Hydrogen-Ion Concentration
  • Kinetics
  • Nuts*


  • Aldehydes
  • Buffers
  • Cyanides
  • Disaccharides
  • Glycosides
  • Hydrogen Cyanide
  • Glucosidases
  • Glucose