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Processing of oat: the impact on oat's cholesterol lowering effect
Myriam M-L Grundy1, Anthony Fardet2, Susan M Tosh3
1Food and Health Programme, Quadram Institute Bioscience, Norwich Research Park, NR4 7UA, UK. myriam.grundy@quadram.ac.uk wildongillian@gmail.com peter.wilde@quadram.ac.uk.
Food & Function
|February 13, 2018
Summary
Oat-based foods can lower cholesterol, but processing matters. Intact oat structures and liquid forms appear more effective for cholesterol reduction than highly processed options.
Area of Science:
- Nutrition Science
- Cardiovascular Health
- Food Science
Background:
- Oat consumption is linked to reduced serum cholesterol and cardiovascular disease risk.
- The cholesterol-lowering effect of oats is attributed to beta-glucan (β-glucan).
- Variability in health outcomes suggests the oat matrix structure influences β-glucan efficacy.
Purpose of the Study:
- To review evidence on oat's cholesterol-lowering effects.
- To examine the role of oat matrix structure and complexity.
- To discuss potential synergistic interactions among oat constituents.
Main Methods:
- Literature review of epidemiological and interventional studies.
- Analysis of oat-based foods based on processing and β-glucan characteristics.
- Consideration of β-glucan quantity and molecular weight.
Main Results:
- Liquid oat-based foods show more consistent, moderate cholesterol reduction than solid/semi-solid forms.
- β-glucan quantity and molecular weight are significant factors.
- Unrefined, intact oat structures are often more effective than purified β-glucan ingredients.
Conclusions:
- The structure of the oat matrix significantly impacts cholesterol-lowering efficacy.
- Food processing and β-glucan characteristics are crucial for hypocholesterolemic effects.
- Further research is needed to clarify mechanisms and optimize oat-based interventions.
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