AOAC RI ERP E-Book - DS DF

K-RINTDF.2016_11_K-RSTAR.DATA.NEW 27/09/2016 11:54 Page 3

OMAMAN-38 C: Instructions for Use Expert Review Panel Use Only September, 2017

However, for those interested in measuring the TDF content of a material, a problem was introduced. For many of these specific carbohydrates (including RS, inulin, Polydextrose and Fibersol 2) a portion of the component is also measured by AOAC Official method 985.29 and 991.43. Thus if the value for a component determined using the specific method is added to the TDF value, some of the component is double counted. This is clearly depicted in Figure 1.

Figure 1. Components measured, and not measured, by AOAC Official Methods 985.29 and 991.43.

In November 2008, the Codex Committee on Nutrition and Foods for Special Dietary Uses (CCNFSDU) established a definition for dietary fiber. This definition was accepted by the Codex Alimentarius Commission (CAC) in 2009 (FAO, 2009) 14 , marking the achievement of international consensus: “Dietary fiber consists o f carbohydrate po lymers w ith ten o r mo re monomeric units, which are no t hydro lyzed by the endogenous enzymes in the small intestine o f humans and belong to the fo llow ing catego ries: edible carbohydrate po lymers naturally occurring in the food as consumed; carbohydrate po lymers which have been obtained from food raw material by physical, enzymatic o r chemical means and which have been shown to have a physio logical effect o f benefit to health as demonstrated by generally accepted scientific evidence to competent autho rities, and; synthetic carbohydrate po lymers which have been shown to have a physio logical effect o f benefit to health as demonstrated by generally accepted scientific evidence to competent autho rities. a When derived from a plant o rigin, dietary fiber may include fractions o f lignin and/o r o ther compounds when associated w ith po lysaccharides in the plant cell walls and if these compounds are quantified by the AO A C gravimetric analytical method fo r dietary fibre analysis: fractions o f lignin and the o ther compounds (pro teic AOAC Research Institute ERP Use Only

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