Effects of purified dietary fiber sources on β-carotene utilization by the chick

J. W. Erdman, G. C. Fahey, C. B. White

Research output: Contribution to journalArticlepeer-review


Effects of various purified dietary fiber components on β-carotene utilization by the chick were investigated in two experiments (expt.). Eight-day-old Columbian x New Hampshire male (expt. 1) or female (expt. 2) chicks were fed a vitamin A-deficient diet for 1 wk and then fed β-carotene-supplemented diets containing 0% fiber, 7% arenaceous flour or 7% of a purified fiber source for 4 wk. Results of expt. 1 showed that hemicellulose, lignin and citrus pectin, but not arenaceous flour or polygalacturonic acid, depressed β-carotene utilization by the chick, as measured by percentage of consumed β-carotene stored in liver as vitamin A relative to the 0% fiber control. In expt. 2, effects of the methoxyl content of pectin were studied. High and medium methoxyl apple pectin, citrus pectin and polygalacturonic acid reduced storage of vitamin A in liver. Low methoxyl apple pectin had no significant effect on β-carotene utilization. Thus, several purified forms of dietary fiber significantly reduced β-carotene utilization by chicks when fed at the 7% supplementary level. Moreover, with pectin, there was an inverse relationship between methoxyl content of pectin and β-carotene utilization.

Original languageEnglish (US)
Pages (from-to)2415-2423
Number of pages9
JournalJournal of Nutrition
Issue number12
StatePublished - 1986

ASJC Scopus subject areas

  • Medicine (miscellaneous)
  • Nutrition and Dietetics


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