Comparison and analysis of small intestinal metabolites of peeled and whole grain oats

KANG Ziyue; MENG Ning; LIU Ming; LIU Yanxiang; JIANG Ping; TAN Bin

doi:10.16433/j.1673-2383.202312120001

Journal of Henan University of Technology(Natural Science Edition) > 2024 > 45(3): 49-57. > DOI: 10.16433/j.1673-2383.202312120001

KANG Ziyue, MENG Ning, LIU Ming, LIU Yanxiang, JIANG Ping, TAN Bin. Comparison and analysis of small intestinal metabolites of peeled and whole grain oats[J]. Journal of Henan University of Technology(Natural Science Edition), 2024, 45(3): 49-57. DOI: 10.16433/j.1673-2383.202312120001

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Comparison and analysis of small intestinal metabolites of peeled and whole grain oats

1. College of Food Engineering, Harbin University of Commerce, Harbin 150028, China;
2. Academy of National Food and Strategic Reserves Administration, Beijing 100037, China;
3. College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China

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Received Date: December 11, 2023
Available Online: July 12, 2024

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Abstract

Abstract

whole grain oat consists of bran, endosperm, and embryo, and different parts of oats consist of different nutrients that are closely related to human health. Therefore, there may be differences in the digestion products of peeled oat (PO) and whole grain oat (UO), leading to differences in nutritional properties. To investigate the effects of different nutrient composition on post-digestion metabolites as well as metabolic pathways, metabolites from the small intestinal sites of PO and UO were first collected after in vitro digestion. Then, the metabolites were determined using ultra performance liquid chromatography/tandem mass spectrometry (UPLC-MS/MS), and orthogonal projections to latent structures discriminant analysis (OPLS-DA) and cluster analysis were used to screen for the differences in metabolites. The results showed that 156 differential metabolites were identified by comparison with the HMDB database and screening of variable importance in projection (VIP) and P values. Among them, 63 were lipid and lipid-like molecules, 46 were organic acids and their derivatives, and 16 were phenylacetones and polyketides. In addition, the KEGG signaling pathway was searched and a greater enrichment was found for starch and sucrose metabolism, fructose and mannose metabolism, flavonoid biosynthesis, and biosynthesis effects of various plant secondary metabolites. It can be concluded that there are differences between the metabolic pathways of oats with different nutrient compositions after simulated digestion in the small intestine in vitro, which may have different health benefits.
- peeled oat,
- whole grain oat,
- simulated digestion in vitro,
- metabolic pathways

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