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3. "Acacia gum as a prebiotic: its role in gut microbiota modulation" – Calame W, et al. (British Journal of Nutrition, 2008).
4. "Fermentation of pectin in the human colon and its prebiotic effects" – Dongowski G, et al. (Journal of Nutrition, 2002).
5. "Partially hydrolyzed guar gum and its effects on intestinal microbiota" – Slavin JL (Journal of Clinical Gastroenterology, 2007).
6. "Resistant starch and its impact on gut microbiota composition" – Bird AR, et al. (Current Opinion in Clinical Nutrition and Metabolic Care, 2010).
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7. "Psyllium fiber and its role in gut microbiota modulation" – Micka A, et al. (Nutrition Research, 2017).
8. "Beta-glucans and their impact on gut microbiota and immune function" – Volman JJ, et al. (Molecular Nutrition & Food Research, 2008).
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10. "Glucomannan and its effects on gut microbiota composition" – Chen HL, et al. (Journal of Nutrition, 2003).
11. "Polydextrose as a prebiotic: its role in gut health" – Jie Z, et al. (British Journal of Nutrition, 2000).
12. "Arabinogalactan's role in gut microbiota modulation and immune support" – Kelly GS (Alternative Medicine Review, 2009).
13. "Soluble corn fiber and its effects on gut microbiota" – Whisner CM, et al. (Journal of Nutrition, 2016).
14. "Soy fiber and its impact on gut microbiota and bowel health" – Anderson JW, et al. (American Journal of Clinical Nutrition, 1988).
15. "Wheat fiber and its role in gut health and microbiota composition" – Flint HJ, et al. (Gut Microbes, 2012).
16. "Oat beta-glucan and its prebiotic effects on gut microbiota" – Tosh SM, et al. (Nutrition Reviews, 2013).
17. "Barley beta-glucan and its prebiotic properties" – Wood PJ, et al. (Cereal Chemistry, 2007).
18. "Beet fiber and its role in gut health and microbiota diversity" – Wisker E, et al. (Journal of Nutritional Biochemistry, 1998).
19. "Carrot fiber as a prebiotic: its role in gut microbiota modulation" – Waldron KW, et al. (Trends in Food Science & Technology, 1997).