Polydextrose and soluble corn fiber increase five-day fecal wet weight in healthy men and women

Derek A. Timm, William Thomas, Thomas W. Boileau, Patricia S. Williamson-Hughes, Joanne L Slavin

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

Dietary fiber has well-established beneficial effects on laxation. Many fibers have been developed with positive sensory properties and 2 such fibers are polydextrose (PDX) and soluble corn fiber (SCF), which can be added to many commercially produced products. We conducted a randomized, double-blind, placebo-controlled, crossover study comparing the laxative effects of PDX and SCF at a dose of 20 g/d with a low fiber control (LFC) eaten daily as a muffin and cereal in 36 healthy men and women. Each treatment period was 10 d with a 2-wk washout period between. Participants collected fecal samples during the last 5 d of each treatment and completed food diaries and gastrointestinal tolerance questionnaires on d 1, 2, and 10 of each treatment period. Five-day fecal wet weight was higher after the PDX and SCF treatments than the LFC treatment (P # 0.0007). The number of stools per day and daily fecal output also were significantly greater during the PDX treatment compared with the LFC treatment. The whole gut transit time did not differ among treatments. The PDX treatment resulted in a softer stool (P = 0.002) than the SCF and LFC treatments. Fecal pH was lowered by the PDX treatment (P = 0.02), whereas SCF tended to lower it compared with the LFC treatment (P = 0.07). When the participants consumed PDX and SCF, they reported significantly more flatulence and borborygmi compared with when they consumed the LFC. Consumption of PDX and SCF at a dose of 20 g/d results in a mild laxative effect with nominal gastrointestinal tolerance issues.

Original languageEnglish (US)
Pages (from-to)473-478
Number of pages6
JournalJournal of Nutrition
Volume143
Issue number4
DOIs
StatePublished - Apr 1 2013

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polydextrose
Zea mays
Weights and Measures
Therapeutics
Laxatives

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Polydextrose and soluble corn fiber increase five-day fecal wet weight in healthy men and women. / Timm, Derek A.; Thomas, William; Boileau, Thomas W.; Williamson-Hughes, Patricia S.; Slavin, Joanne L.

In: Journal of Nutrition, Vol. 143, No. 4, 01.04.2013, p. 473-478.

Research output: Contribution to journalArticle

Timm, Derek A. ; Thomas, William ; Boileau, Thomas W. ; Williamson-Hughes, Patricia S. ; Slavin, Joanne L. / Polydextrose and soluble corn fiber increase five-day fecal wet weight in healthy men and women. In: Journal of Nutrition. 2013 ; Vol. 143, No. 4. pp. 473-478.
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