Arabinoxylan (AXOS · Wheat Bran Fiber · Prebiotic Hemicellulose)
Compiled from published pharmacological and botanical literature. Not independently verified by Herbuno. Spotted an error or have a correction? Flag it below →
| CAS No. | 68911-25-1 |
| Class | Polysaccharide · Soluble Dietary Fiber · Hemicellulose |
| Source | Triticum aestivum (Wheat) — bran; also rye, barley, and rice bran |
| Claim strength | Moderate |
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Arabinoxylan is the predominant non-starch polysaccharide in cereal grain bran — constituting 20–30% of wheat bran dry weight. Arabinoxylan oligosaccharides (AXOS), produced by enzymatic hydrolysis, are the commercially significant fraction for prebiotic supplement and functional food applications. Arabinoxylan occupies a growing position in the precision prebiotic market, distinguished from FOS and inulin by its selectivity for specific Bifidobacterium species and its dual mechanism of postprandial glucose attenuation combined with prebiotic activity.
Arabinoxylan for Blood Glucose, Prebiotic Activity & Gut Health — Evidence
Postprandial blood glucose reduction: Multiple RCTs document significant reductions in postprandial glucose and insulin response when arabinoxylan is consumed with carbohydrate-containing meals. Claim strength: Moderate–High.
Selective prebiotic activity: AXOS selectively stimulates Bifidobacterium longum and Bifidobacterium adolescentis. Human intervention studies confirm increases in bifidobacteria counts and short-chain fatty acid production. Claim strength: Moderate.
Gut barrier and immune support: Short-chain fatty acids produced from arabinoxylan fermentation — particularly butyrate — strengthen colonic epithelial tight junctions. Claim strength: Emerging–Moderate.
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Arabinoxylan Dosage, Grade & Formulator Specification
Clinically referenced dose: 4–10g per day for glycaemic and prebiotic effects. AXOS is effective at lower doses (2–4g per day) for pure prebiotic applications. For blood glucose formulations, specify high-MW arabinoxylan extract. For precision prebiotic applications, specify AXOS with DP range on the CoA.
Gluten-free specification: Wheat-source arabinoxylan extraction removes gluten proteins but confirm gluten content below 20 ppm on the CoA for gluten-free label claims. Rice bran arabinoxylan is the alternative.
Pairs with: Inulin, psyllium husk, specific Bifidobacterium strains for precision synbiotic formulations.
Frequently Asked Questions — Arabinoxylan
What is the difference between arabinoxylan and AXOS?
Arabinoxylan is the intact high-MW hemicellulose from cereal bran. AXOS is enzymatically hydrolysed to shorter chain lengths with better solubility and stronger prebiotic selectivity for specific Bifidobacterium species. High-MW arabinoxylan has stronger glycaemic attenuation per gram.
How does arabinoxylan compare to inulin as a prebiotic?
Both stimulate Bifidobacterium and produce short-chain fatty acids. AXOS shows stronger selectivity for B. longum and B. adolescentis. Arabinoxylan also provides glycaemic attenuation that inulin does not.
Is wheat-source arabinoxylan safe for gluten-sensitive individuals?
Extraction removes gluten proteins but the extract must be tested below 20 ppm for gluten-free claims. Rice bran arabinoxylan is the alternative.
What dose is needed for blood sugar management?
4–10g per day consumed with carbohydrate-containing meals. Consuming before or during a meal produces strongest glycaemic attenuation.
Claim-strength scale – High = multiple human studies; Moderate = a few trials; Emerging = early lab data.
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