Determination of digestible energy values and fermentabilities of dietary fibre supplements: a European interlaboratory study in vivo

The British Journal of Nutrition
G LiveseyJ Decombaz

Abstract

The performance of methods to determine energy conversion factors for dietary fibre (DF) supplements and fermentability (D) values of their non-starch polysaccharides (NSP) was investigated. Heats of combustion, digestible energy (DE) and D values were determined on five DF supplements in five European laboratories on five separate occasions. In each instance the DF supplements were fed to juvenile male Wistar rats at two doses, 50 and 100 g/kg basal diet, for 3 weeks with food and faeces collected in the 3rd week. Among-laboratory variations in heats of combustion (delta Hc) were < 2%. DE values (kJ/g dry weight) at the upper and lower doses respectively were: 10.4 and 9.9 for a high-methoxyl apple pectin, 9.5 and 9.4 for a sugar-beet DF supplement, 12.2 and 12.7 for soyabean DF supplement, 3.8 and 4.0 for maize bran, and 0.3 and 0.3 for Solka-floc cellulose. Variations among laboratories, among occasions and among animals were < 1, < 2 and < 2.5 kJ/g respectively. The among-occasion: among-laboratory variance ratio for DE was 0.5, suggesting the method performed equally well in all laboratories. There was no evidence of learning of fatigue or fatigue in the performance of the method. D values were also independent of dose and...Continue Reading

References

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Citations

Sep 1, 1995·The British Journal of Nutrition·J L BarryC J Rumney
Apr 12, 2001·The British Journal of Nutrition·G Livesey
Feb 28, 2004·Applied Radiation and Isotopes : Including Data, Instrumentation and Methods for Use in Agriculture, Industry and Medicine·Eduardo García-Toraño, Miguel Roteta
Jan 5, 2005·The Journal of Nutritional Biochemistry·T Peter SteinCharles E Wade
Dec 4, 2002·International Journal of Obesity and Related Metabolic Disorders : Journal of the International Association for the Study of Obesity·G Livesey
Jan 1, 1997·The Journal of Nutrition·E WiskerW Feldheim
Oct 30, 2018·Animal Science Journal = Nihon Chikusan Gakkaihō·Takashi Sakata

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