Suberin structure in potato periderm: glycerol, long-chain monomers, and glyceryl and feruloyl dimers

J Agric Food Chem. 2000 Nov;48(11):5476-83. doi: 10.1021/jf0006123.


Suberin in extractive-free potato periderm amounts to approximately 25% determined by NaOCH(3) methanolysis. Monomeric composition is characterized by glycerol (20% of monomers), long-chain alpha, omega-diacids, omega-hydroxyacids, alkanoic acids, and alkan-1-ols, with predominance of octadec-9-enodioic acid and 18-hydroxyoctadec-9-enoic acid (39 and 15% of long-chain monomers, respectively). Aromatic hydroxycinnamyl monomers were also present (<1%). Partial depolymerization of potato periderm suberin using a Ca(OH)(2)-catalyzed methanolysis solubilized approximately 10% of suberin aliphatics. GC-MS analysis showed the presence of monomers, dimers, and trimers (87, 12, and 1% of identified compounds, respectively). A total of 26 dimers were identified by EIMS: monoacylglyceryl esters of alpha,omega-diacids, omega-hydroxyacids, and alkanoic acids (with predominance of the 1- and 2-isomers of the monoacylglyceryl ester of the octadec-9-enodioic acid), as well as feruloyl esters of omega-hydroxyacids and alkan-1-ols and a small quantity of a monoferuloylglycerol. Following a discussion of suberin macromolecular structure, it is proposed that in suberized cell walls, the polyaliphatic polymers have a three-dimensional development ensured by glycerol and exist independently from the associated polyaromatics.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Carboxylic Acids / analysis*
  • Coumaric Acids / analysis
  • Dimerization
  • Gas Chromatography-Mass Spectrometry
  • Glycerol / analysis
  • Hydroxy Acids / analysis
  • Lipids
  • Membrane Lipids / chemistry*
  • Membrane Lipids / isolation & purification
  • Solanum tuberosum / chemistry*
  • Spectrometry, Mass, Secondary Ion


  • Carboxylic Acids
  • Coumaric Acids
  • Hydroxy Acids
  • Lipids
  • Membrane Lipids
  • suberin
  • ferulic acid
  • Glycerol