3 years ago

Selective hydrolysis of hemicellulose component of wheat straw in high pressure CO2 and water with low concentration of acetic acid

Mengge Li, Xiaomei Yang, Tianliang Lu, Lipeng Zhou


Selective hydrolysis of hemicellulose component from lignocellulose is one of the most vital steps for lignocellulose biorefinery. In this report, wheat straw, one of the largest output agriculture residues, was treated by high pressure CO2‐H2O in the presence of low concentration of acetic acid to selectively hydrolyze hemicellulose.


The in situ formed carbonic acid and acetic acid catalyzed the selective hydrolysis of hemicellulose. The removal ratio of hemicellulose reached 82.3% when the lignocellulose was treated in the high pressure CO2‐H2O‐CH3COOH (Cacetic acid = 0.3 mol L−1) system at 180 °C for 1 h, and oligosaccharides and monosaccharide were main products. After removing most part of hemicellulose component, cellulose component was exposed with the increase of surface area. Additionally, the surface of treated wheat straw became rough.


High pressure CO2‐H2O with low concentration of acetic acid is effective to remove and hydrolyze the hemicellulose component of WS. Acetic acid improves the removal ratio of hemicellulose.

This article is protected by copyright. All rights reserved.

You might also like
Discover & Discuss Important Research

Keeping up-to-date with research can feel impossible, with papers being published faster than you'll ever be able to read them. That's where Researcher comes in: we're simplifying discovery and making important discussions happen. With over 19,000 sources, including peer-reviewed journals, preprints, blogs, universities, podcasts and Live events across 10 research areas, you'll never miss what's important to you. It's like social media, but better. Oh, and we should mention - it's free.

  • Download from Google Play
  • Download from App Store
  • Download from AppInChina

Researcher displays publicly available abstracts and doesn’t host any full article content. If the content is open access, we will direct clicks from the abstracts to the publisher website and display the PDF copy on our platform. Clicks to view the full text will be directed to the publisher website, where only users with subscriptions or access through their institution are able to view the full article.