Related Experiment Video
Updated: Jan 29, 2026

Evaluation of Protein–Protein Interactions using an On-Membrane Digestion Technique
Published on: July 19, 2019
Influence of nanocellulose on in vitro digestion of whey protein isolate
1Department of Food Science and Technology, University of Georgia, Athens, GA 30602, United States.
Abstract:
Three types of nanocellulose (NC), namely cellulose nano-fibrils (CNF), TEMPO-oxidized CNF and cellulose nanocrystals (CNC), were studied in terms of their effects on in vitro digestion of whey protein isolate (WPI). The behavior of NC itself during digestion was monitored by particle size, confocal microscopy imaging, viscosity, and zeta potential. 1% CNF and 4% CNC significantly retarded free amino nitrogen (FAN) diffusion (23% and 50% respectively) mainly due to high viscosity. 4% CNC also significantly reduced %FAN release during intestinal digestion. Anionic NC (TEMPO-CNF and CNC) bound with WPI causing less protein aggregation at the gastric phase as well as reductions in mean particle size and/or viscosity of digesta. However, cellulose and CNF did not bind with WPI. The findings from this study lay a foundation for future applications of nanocellulose in the food industry as rheology modifiers and development of functional foods for delaying gastric emptying and promoting satiety.
Related Concept Videos
Protein Digestion
Carbohydrate Digestion
What is Monogastric Digestion?
Lipid Digestion
Regulation of the Digestive System
The effectors in this regulation system are glands and smooth muscles. Activation of...
Other Disorders of Digestive System

