The effect of cooked wheat bran on the excretion of
fecal nutrients, fecal weight, and transit time was investigated
in 10 men, aged 20 to 35 years. The study was
divided into three 18-day periods. The subjects were
divided into two groups; one received the basal diet supplemented
with 15 g of AACC Certified Food Grade Wheat
Bran (B) during the first period, no bran (NB) in the
second, and B in the third. The other group received NB,
B and NB in that order. The basal diet supplied 6.6 g
neutral detergent fiber (NDF). The subjects' fat intake
was constant. All feces were collected; values for each
subject were obtained from the second and third 6-day
fecal composites of each period. Bran induced significantly
higher (p<0.0l) fecal loss of energy, nitrogen and
ash. In response to B and NB diets, respectively, mean fecal caloric output was 211±27 and 179±27 kcal/day; mean
fecal nitrogen was 2.1±0.3 and 1.9±0.3 g/day; fecal ash was
5.0±0.5 and 4.3±0.5 g/day. Although the mean daily fat
excretion was higher on B (5.4±1.7 g) than on NB (4.5±1.3
g), the difference was not statistically significant. Bran
caused a consistent increase in fat loss only in one group
of subjects. Fecal NDF (determined in the last 6-day composite
of each period) was higher (p<0.05) on B (8.3±2.2g/
day) than on NB (5.1±2.6 g/day). Fecal wet weight and dry
solids, respectively, were higher (p<0.05 and p<0.01)
when the subjects received B (172±39 and 43±3 g/day) than
when they received NB (143±34 and 36±4). Percentage moisture
content of the feces was not altered by bran supplementation.
Mean transit time in hours was shorter on B
(28.5±4.8) than NB (32.3±8.4); the difference, however, was not
statistically significant. Results suggested that cooked
wheat bran may cause increase in nutrient loss in feces.
The increment, however, may not be important nutritionally. / Graduation date: 1980
| Identifer | oai:union.ndltd.org:ORGSU/oai:ir.library.oregonstate.edu:1957/28159 |
| Date | 24 May 1979 |
| Creators | Yu, Michelle Hui-ming |
| Contributors | Miller, Lorraine T. |
| Source Sets | Oregon State University |
| Language | en_US |
| Detected Language | English |
| Type | Thesis/Dissertation |
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