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/m(2) (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.min/l, ns). Inulin markedly enhanced breath H-2 excretion (IAUC test 280+/-40; placebo 78+/-26 ppm.h, P < 0.005), as well as faecal concentration of L-lactate. Total facultative anaerobes significantly decreased after test, and bifidobacteria increased alter 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.

Effect of consumption of a ready-to-eat breakfast cereal containing inulin on the intestinal milieu and blood lipids in healthy male volunteers / F. Brighenti, M.C. Casiraghi, E. Canzi, A. Ferrari. - In: EUROPEAN JOURNAL OF CLINICAL NUTRITION. - ISSN 0954-3007. - 53:9(1999), pp. 726-733.

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

M.C. Casiraghi;E. Canzi
Penultimo
;
A. Ferrari
1999

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/m(2) (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.min/l, ns). Inulin markedly enhanced breath H-2 excretion (IAUC test 280+/-40; placebo 78+/-26 ppm.h, P < 0.005), as well as faecal concentration of L-lactate. Total facultative anaerobes significantly decreased after test, and bifidobacteria increased alter 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.
inulin ; plasma lipids ; fermentation ; colonic microflora ; bile acids
Settore BIO/09 - Fisiologia
Settore AGR/16 - Microbiologia Agraria
Article (author)
File in questo prodotto:
Non ci sono file associati a questo prodotto.
Pubblicazioni consigliate

Caricamento pubblicazioni consigliate

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2434/226491
Citazioni
  • ???jsp.display-item.citation.pmc??? 27
  • Scopus 166
  • ???jsp.display-item.citation.isi??? 138
social impact