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<p>The coloured grains are rich in phytochemicals and gaining attention nowadays due to their functional properties on human health. The bioactive components in these grains support a healthy gut environment by encouraging the growth of beneficial microbes such as <i>Lactobacillus</i> and <i>Bifidobacterium</i>. Specifically, the prebiotic elements and phytonutrients in these grains provide essential nutrients that support probiotic organisms, contributing in managing physiological conditions, supporting vitamin biosynthesis in the gut and aiding in the reduction of cholesterol and cardiovascular diseases. As diet is a major factor in determining the composition of the gut microbiota therefore including such nutrient-dense meals is essential for preserving microbial balance. While plant-based foods are traditionally recognised as rich sources of dietary health promoting compounds and prebiotics, emerging research suggests that pigmented cereals also have a significant role in maintaining a healthy gut environment through their unique composition of flavonoids, phenolic acids, carotenoids, and anthocyanins as well as dietary fiber. This review summarises recent findings and the role of bioactive compounds and prebiotic components in coloured grains in modulating gut microbiota. These components may enhance gut health and potentially reduce the risk of age-related gastrointestinal conditions, including colorectal cancer. It examines their potential mechanisms in enhancing probiotic growth and mitigating age-related gastrointestinal disorders, including colorectal cancer. Furthermore, it draws attention to knowledge gaps regarding the direct relationship between gut immunity and dietary bioactive, emphasizing the need for more research in this field.</p>

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Pigmented cereals as sources of phytochemicals and prebiotics for gut microbiota and intestinal health: a review

  • 期刊论文

  • 发表日期：

    2026年6月22日

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  • Keshav Sharma,
  • Unnati Gupta,
  • Vidyanand Tiwari

摘要

The coloured grains are rich in phytochemicals and gaining attention nowadays due to their functional properties on human health. The bioactive components in these grains support a healthy gut environment by encouraging the growth of beneficial microbes such as Lactobacillus and Bifidobacterium. Specifically, the prebiotic elements and phytonutrients in these grains provide essential nutrients that support probiotic organisms, contributing in managing physiological conditions, supporting vitamin biosynthesis in the gut and aiding in the reduction of cholesterol and cardiovascular diseases. As diet is a major factor in determining the composition of the gut microbiota therefore including such nutrient-dense meals is essential for preserving microbial balance. While plant-based foods are traditionally recognised as rich sources of dietary health promoting compounds and prebiotics, emerging research suggests that pigmented cereals also have a significant role in maintaining a healthy gut environment through their unique composition of flavonoids, phenolic acids, carotenoids, and anthocyanins as well as dietary fiber. This review summarises recent findings and the role of bioactive compounds and prebiotic components in coloured grains in modulating gut microbiota. These components may enhance gut health and potentially reduce the risk of age-related gastrointestinal conditions, including colorectal cancer. It examines their potential mechanisms in enhancing probiotic growth and mitigating age-related gastrointestinal disorders, including colorectal cancer. Furthermore, it draws attention to knowledge gaps regarding the direct relationship between gut immunity and dietary bioactive, emphasizing the need for more research in this field.