Enhanced ethanol production by removal of cutin and epicuticular waxes of wheat straw by plasma assisted pretreatment

Zsófia Kádár, Nadja Schultz-Jensen, J. S. Jensen, Mads A. T. Hansen, Frank Leipold, Anne-Belinda Bjerre

Research output: Contribution to journalJournal articleResearchpeer-review


The removal of cutin and epicuticular waxes of wheat straw by PAP (plasma assisted pretreatment) was investigated. Wax removal was observed by Attenuated Total Reflectance-Fourier Transform Infrared (ATR-FTIR) as chemical change on the surface of most intensively pretreated samples as well as with Scanning Electron Microscopy (SEM) imaging. Compounds resulting from wax degradation were analyzed in the washing water of PAP wheat straw. The wax removal enhanced enzymatic hydrolysis yield and, consequently, the efficiency of wheat straw conversion into ethanol. In total, PAP increased the conversion rate of the raw material carbohydrate content up to 67%, compared to untreated raw material.
Original languageEnglish
JournalBiomass and Bioenergy
Pages (from-to)26-30
Publication statusPublished - 2015


  • Bioethanol
  • Enzymatic hydrolysis
  • Plasma assisted pretreatment
  • Simultaneous saccharification and fermentation
  • Wax removal
  • Fermentation

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