Dietary Reference Intakes Proposed Definition of Dietary Fiber (2001) / Chapter Skim
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II. Definitions of Dietary Fiber
II. Definitions of Dietary Fiber
Pages 3-11
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From page 3... ...
In 1984, New Zealand Food Regulations defined dietary fiber as the "edible plant material not hydrolysed by the endogenous enzymes of the human digestive tract"; it was to be measured by the first method of analysis (Prosky et al., 1985) accepted by AOAC (AOAC method 985.291.
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From page 4... ...
Dietary fiber is the components of the foods that are normally not broken down by the body's own enzymes of humans. Dietary fiber is the edible substance of vegetable origin which normally is not hydrolyzed by the enzymes secreted by the human digestive system Dietary fibre is the edible plant or animal material not hydrolysed by the endogenous enzymes of Me human digestive tract as determined by He agreed upon method.
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From page 5... ...
Dietary fibers promote beneficial physiological effects including taxation, and/or blood cholesterol attenuation, and/or blood glucose attenuation. Dietary fiber is the material isolated by AOAC methods 985.29 and/or 991.43, combined with 997.08 (see Table 2~.
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From page 6... ...
Schweizer and Wursch, 1979 Yes Yes Some Some Southgate, 1969 Yes Yes Some No Theander and Aman, 1979 Yes Yes Some No Theander and Westerlund, Yes Yes Some No 1986 Uppsala Method of Theander Yes Yes Some No et al., 1995 (AOAC 994.13) a E-GC = enzymatic-gas chromatographic, E-C = en~rnatic-colorimetric, E-HPLC = enzymatic-high performance liquid chromatographic.
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From page 7... ...
PROPOSED DEFINITION OFDIETARY FIBER 7 Resistant Chitin Oligosaccha- Malto- and Chondroitin Noncarbo ndes Polydext~ose destains Chitosan Sulfate hydrate No No No Some Some Some No Yes No No No No No No No Some Some No No No No Some Some No Yes Yes Yes Some Some Some No No No No No No No No No Some Some Some No No No Some Some Some No No No No No No No No No Some Some Some No No No Some Some Some No No No Some Some No No No No Some Some Some No No No Some Some No No No No Some Yesb No No No No Some Yesb No No No No Some Some No
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From page 8... ...
This definition included nonstarch polysaccharides and lignin and excluded fiber-associated substances found in the plant cell wall such as phytates, cutms, saponins' lectins, proteins, waxes, silicon, and other inorganic components (LSRO, 1987~. Other substances not considered to be dietary fiber according to the LSRO definition include indigestible compounds formed during cooling or processing (e.g., resistant starch, Maillard reaction products)
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From page 9... ...
Food Standards Agency acknowledged COMA's definition of dietary fiber as nonstarch polysaccharides yet recognized that the "European rules preclude insistence on a national definition". AOAC method 985.29 and the Englyst method (Englyst and Cummings, 1984)
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From page 10... ...
In November 2000, the recently formed Australia New Zealand Food Authority (ANEFA) concluded that relying on a prescribed analytical method as the sole means of defining dietary fiber for regulatory purposes was unsatisfactory since analytical methods do not take into consideration the physiological Tact of new food forms or food ingredients that are part of the diet (ANZFA, 2000~.
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From page 11... ...
has not been systematically studied, but methods developed to measure total fiber do recover a portion of these types of polysaccharides.
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