Dietary Reference Intakes Proposed Definition of Dietary Fiber (2001) / Chapter Skim
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Appendix D: Determination of Energy Values for Fibers
Appendix D: Determination of Energy Values for Fibers
Pages 63-64
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From page 63... ...
Similarly, individual variation in physical and metabolic activities affects net energy. In addition, interspecies differences from basic research studies, the variety of analytical methods used, the numerous experimental variables tested, and We variation in standard operating procedures used by investigators make data interpretation difficult and hamper the determination of exact values for metabolizable energy and net energy from dietary fiber.
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From page 64... ...
and include gross energy determination, energy balance method, factorial calculation of the metabolizable energy value, calculation of the net energy of maintenance, indirect calorimetry, breath hydrogen determination, and radiolabel technique. Because the process of fermentation is anaerobic, less energy is recovered from dietary fiber than the 4 kcal/g obtained from aerobic glycolysis.
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