Understanding the Complex Chemistry of Dietary Fiber
BY: IFT Staff
Monday, July 13; 2:15–3:45 p.m.
Dietary fiber (DF) is a complex mixture (mostly carbohydrates) of food components resistant to digestion. Unlike other nutrients, dietary fiber derives its nutritional value, not from being digested and absorbed, but remaining undigested after passing through the stomach and small intestine. Similarly, quantitative measurement of DF depends on measuring resistance to digestion rather than specific quantitation of a chemical species.
Simulating the human digestive system and assuring capture and quantitation of the digestion resistant fraction of the food, combined with method reproducibility, are keys to solid methodology for dietary fiber labeling. This presentation and discussion will focus on optimizing the simulation of human digestion, optimizing the capture of dietary fiber in the method, and the need for reproducible, stable methodology for dietary fiber labeling purposes.
Presented by: David Klurfeld, USDA-ARS; David Plank, Medallion Labs; Barry McCleary, Megazyme International Ireland; Jonathan DeVries, General Mills (retired)