Journal
FOOD CHEMISTRY
Volume 370, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2021.131069
Keywords
Whole grain; Porridge; In vitro digestion; Starch; Protein; Dietary fiber; Factor analysis
Funding
- Technological Innovation Guidance Plan of Jiangxi Province [20203AEI91007]
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Whole grains like oats, quinoa, and buckwheat are considered healthier choices for porridge due to their higher dietary fiber content and lower glycemic index. They also have higher digestible protein content and amino acid bioaccessibility compared to other grains.
Wholegrains have been promoted for human consumption due to their various health benefits. However, different wholegrains vary in nutritional composition and their beneficial impact on health. In this study, we compared the in vitro starch and protein digestibility, as well as dietary fiber content of eight different wholegrains including barley, buckwheat, coix seed, foxtail millet, oat, proso millet, quinoa, and sorghum and their porridges. We found that boiling improved starch digestibility of all grains, and protein digestibility except proso millet and sorghum. Porridges made from oats, quinoa, or buckwheat are considered healthier than others due to their lower glycemic index and glycemic load, higher digestible protein content and amino acid bioaccessibility, and higher dietary fiber content (>12%). This study could provide a comprehensive nutritional composition and digestibility of the eight types of wholegrains and their porridges. Dietary recommendations were also given for different populations based on factor analysis.
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