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Effect of consumption of a ready-to-eat breakfast cereal containing inulin on the intestinal milieu and blood lipids in healthy male volunteers.

Abstract：

OBJECTIVE:To investigate the effect of a breakfast cereal containing inulin on blood lipids and colonic ecosystem in normolipidemic young men. SETTING:Department of Food Science and Microbiology,University of Milan, Italy. SUBJECTS:Twelve healthy male volunteers, age 23.3 +/- 0.5 y, body mass index (BMI) 25.7 +/- 1.2 kg/m2 (mean +/- s.e.m.). INTERVENTIONS:Subjects consumed daily, for three periods of four weeks, 50 g of a rice-based ready-to-eat cereal (placebo) and the same cereal containing 18% inulin (test) in substitution of their habitual breakfast, then returned to the habitual diet (wash-out). They followed no other dietary restrictions. RESULTS:No changes in body weight, dietary habits, faecal and bile acid output, faecal short-chain fatty acid (SCFA) and faecal pH, were observed at the end of each period, whereas plasma total cholesterol and triacylglycerols significantly decreased at the end of test period by 7.9 +/- 5.4 (P < 0.05) and 21.2 +/- 7.8% (P < 0.005) respectively. Meal glucose tolerance test (MTT) resulted in the same incremental area under the curve for both cereals (IAUC test 124 +/- 35; placebo 118 +/- 33 mmol x min/l, ns). Inulin markedly enhanced breath H2 excretion (IAUC test 280 +/- 40; placebo 78 +/- 26 ppm x h, P < 0.005), as well as faecal concentration of L-lactate. Total facultative anaerobes significantly decreased after test, and bifidobacteria increased after correction for total anaerobes (P < 0.05). Changes in blood lipids were negatively correlated with bifidobacteria counts and positively with secondary bile acid excretion (P < 0.05). CONCLUSIONS:Inulin seems to have a lipid lowering potential in normolipidemic men possibly mediated by mechanisms related to colonic fermentation.

journal_name

Eur J Clin Nutr

journal_title

European journal of clinical nutrition

authors

Brighenti F,Casiraghi MC,Canzi E,Ferrari A

doi

10.1038/sj.ejcn.1600841

subject

Has Abstract

pub_date

1999-09-01 00:00:00

pages

726-33

issue

eissn

0954-3007

issn

1476-5640

journal_volume

pub_type

临床试验,杂志文章

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Effect of consumption of a ready-to-eat breakfast cereal containing inulin on the intestinal milieu and blood lipids in healthy male volunteers.