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Related Experiment Videos

Cholesterol-lowering effect of beta-glucan from oat bran in mildly hypercholesterolemic subjects may decrease when

Daniëlle A J M Kerckhoffs1, Gerard Hornstra, Ronald P Mensink

  • 1Department of Human Biology, Maastricht University, Maastricht, The Netherlands.

The American Journal of Clinical Nutrition
|July 30, 2003
PubMed
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Beta-glucan in orange juice significantly lowered LDL cholesterol in hypercholesterolemic subjects. However, beta-glucan in bread and cookies did not show significant cholesterol-lowering effects, suggesting food matrix impacts.

Area of Science:

  • Nutritional Science
  • Cardiovascular Health
  • Dietary Fiber Research

Background:

  • Conflicting findings exist regarding beta-glucan's impact on serum lipoproteins.
  • Oat beta-glucan is recognized for potential cholesterol-lowering benefits.

Purpose of the Study:

  • To investigate the effects of oat beta-glucan, consumed via bread/cookies versus orange juice, on serum lipoproteins.
  • To assess lipid profiles in mildly hypercholesterolemic individuals.

Main Methods:

  • Two studies were conducted: Study 1 (4 weeks) with beta-glucan-rich bread/cookies vs. control, and Study 2 (2 weeks, crossover design) with beta-glucan-rich orange juice vs. control.
  • Participants were mildly hypercholesterolemic adults.

Main Results:

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  • In Study 1, no significant difference in LDL cholesterol change was observed between beta-glucan and control bread/cookies.
  • In Study 2, beta-glucan-rich orange juice significantly reduced LDL cholesterol (6.7%) and total to HDL cholesterol ratio (5.4%) compared to the control drink.
  • No significant changes in HDL-cholesterol or triacylglycerol levels were noted.

Conclusions:

  • The food matrix and processing methods may negatively influence the cholesterol-lowering efficacy of oat beta-glucan.
  • Beta-glucan's hypocholesterolemic properties appear to be formulation-dependent.