Protein Crosslinks Influence Food Digestion

Torpor and digestion in food-storing hibernators.

Many species of hibernating mammals rely on hoarded food rather than body fat to support winter energy requirements. Here, we evaluate whether the associated ingestive and digestive requirements reduce the benefits that food-storing hibernators can accrue from torpor. Using a simple model, we predict (1) that digestive efficiency could either increase or decrease with increased use of torpor, d...

Influence of the protein digestion rate on protein turnover in young and elderly subjects.

It has long been recognized that numerous dietary parameters, such as the amount and type of protein and nonprotein energy sources, affect protein metabolism. More recently, we demonstrated that the protein digestion rate is an independent factor regulating postprandial protein gain. Indeed, in young men, using a non-steady-state approach and intrinsically labeled milk protein fractions [whey p...

Food Waste Disposal Using Anaerobic Digestion

Protein Digestion and Absorption

About three-quarters of a century ago, Santayana wrote, "Those who cannot remember the past are condemned to repeat it." This somber dictum is splendidly illustrated by the history of the study of protein digestion and absorption over the same three-quarters of a century (12,13). This chapter begins with a summary of this history, since it provides a deeper understanding of the principles invol...

Protein digestion in ruminants

Although the protein requirement of domestic ruminants may be calculated from a simple one-compartment model, this approach ignores factors such as microbial fermentation in the rumen and the non-equality of feed proteins. By examining digestion in each of the functional compartments of the digestive tract of the ruminant, a model may be constructed of the complete process. In this review, we p...