High-pressure homogenized citrus fiber cellulose dispersions

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

Serial, M. R. (Wageningen University & Research)
Velichko, E. (TU Delft RST/Neutron and Positron Methods in Materials)
Nikolaeva, T. (Wageningen University & Research)
den Adel, R. (Unilever Food Innovation Centre)
Terenzi, C. (Wageningen University & Research)
Bouwman, W.G. (TU Delft RST/Neutron and Positron Methods in Materials)
van Duynhoven, J. P.M. (Wageningen University & Research; Unilever Food Innovation Centre)

2021

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.

cellulose
Citrus fiber
high-pressure homogenization
rheo-MRI
SAXS

http://resolver.tudelft.nl/uuid:17d8292a-a6bb-45a1-9627-c75436fb1638

https://doi.org/10.1016/j.foostr.2021.100237

2213-3291

Food Structure, 30

Institutional Repository

journal article

© 2021 M. R. Serial, E. Velichko, T. Nikolaeva, R. den Adel, C. Terenzi, W.G. Bouwman, J. P.M. van Duynhoven