High-pressure homogenized citrus fiber cellulose dispersions: Structural characterization and flow behavior

M.R. Serial, E. Velichko, T. Nikolaeva, R. den Adel, C. Terenzi, W.G. Bouwman, J.P.M. van Duynhoven*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

Functionalized biomass waste sources of cellulose have drawn attention due to their high availability and sustainability properties. In this work we characterize the structural and flow properties of high-pressure homogenized citrus fiber cellulose dispersions, employing SAXS, rheology and rheo-MRI techniques. The high-pressure treatment disrupts the microfibrillar network within the citrus fibers, but leaves the individual microfibrils intact. Under moderate shear (0.1-100 s-1) in a confined (<1 mm) geometry, these functionalized citrus fiber cellulose dispersions exhibit thixotropic shear-banding behavior accompanied by cooperative flow of microfibril flocs with correlation lengths ξ ~ 100 μm. The presented findings form a basis towards understanding and manipulating the structural and rheological properties of non-wood biomass cellulose microfibrils under industrially-relevant conditions.

Original languageEnglish
Article number100237
JournalFood Structure
Volume30
DOIs
Publication statusPublished - Oct 2021

Keywords

  • cellulose
  • Citrus fiber
  • high-pressure homogenization
  • rheo-MRI
  • SAXS

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