Mineral balance in adult men: effect of four refined fibers

Abstract

Eleven men consumed a basal diet alone and with cellulose (Na-carboxymethylcellulose, locust bean gum, or karaya gum) added at 7.5 g fiber per 1000 calories for 4 wk each. Food, urine, and fecal composites were collected during the last 8 d of each feeding period. Bowel transit time was not significantly affected; however, total dry fecal weight was significantly increased after the refined fibers compared with that after the basal diet. Adding refined fibers to the basal diet did not significantly affect apparent mineral balance of calcium, magnesium, manganese, iron, copper, or zinc, with the exception of a negative mineral balance for manganese with carboxymethylcellulose. Karaya gum had a mean positive balance for all minerals tested. These results indicate that the hypocholesterolemic effect of the fibers that form gels occurs without compromising mineral balance in those subjects consuming Recommended Dietary Allowance levels of the minerals studied.

Effect of soluble or partly soluble dietary fibres supplementation on absorption and balance of calcium, magnesium, iron and zinc in healthy young men

“…The Ca, provided by this ®bre, increased the daily Ca intake by more than 30%, and that of Mg by about 20%. This con®rms previous data concerning the high participation of some crude ®bres in mineral intake (Van Dockkum et al, 1982;Behall et al, 1987;Fairweather-Tait et al, 1990). Furthermore, sugar…”

“…The effect of pectin on Zn retention had been tested in humans and found to be negligible (Lei et al, 1980). Finally in a similar study to ours, Behall et al (1987) found that re®ned ®bres had no effect on mineral balance in subjects consuming recommended dietary allowance levels of Fe and Zn when fed as part of their control diet.…”

Does Dietary Fiber Affect the Levels of Nutritional Components after Feed Formulation?

“…Moreover, after feeding different fiber forms to adolescent males, Drews, et al [41] observed a decrease in copper balance among subjects that were fed hemicellulose, though pectin and intact cellulose had no effect on the copper concentration. Behall, et al [42] concluded that fiber forms such as locust bean, karaya gums, and carboxymethylcellulose, increased or had no effect on the trace mineral bioavailability, including copper. The absorption of copper follows a similar pathway as the absorption of calcium.…”

Macronutrients and type 1 diabetes (revision number 6)

“…An effect of cellulose (14-23g/day) is demonstrated on increasing faecal weight in all trials. Two trials report an effect of cellulose on reducing intestinal transit time, but one trial reports no significant effect in subjects with a relatively fast initial intestinal transit time (Behall et al, 1987). The effect sizes are comparable to wheat fibre.…”

“…Three randomised controlled trials were identified that presented evidence on cellulose and in relation to faecal weight and transit times (Spiller et al, 1980;Hillman et al, 1983;Behall et al, 1987). The transit time methodologies were insufficiently comparable to allow a meta-analysis.…”