What is inulin? who knows?

Inulin is a natural linear fructan polysaccharide linked by β-2,1 glycosidic bonds with a terminal glucose unit. It belongs to water-soluble dietary fiber and prebiotic functional ingredients. Although widely present in garlic, asparagus, leeks and wheat, industrial commercial inulin is mainly extracted from chicory root and Jerusalem artichoke via hot-water extraction, decolorization, ion-exchange purification and spray drying.

Industrial Grade Specifications & DP Classification 

All specifications comply with FCC, JECFA, EU food additive standards and China GB 28308. The DP classification follows international industry criteria: Low DP (FOS type), Medium DP and High DP, with differentiated fiber content and functional properties.

Commercial Grade Degree of Polymerization (DP) Total Dietary Fiber Botanical Source Relative Sweetness Core Physical Properties Industrial Application Orientation
Low DP (FOS Type) DP 2–10 ≥90% Chicory Root 30–40% of Sucrose High cold-water solubility, fast fermentation, mild sweet taste Sugar replacer, solid drinks, prebiotic sachets
Medium DP (Standard Grade) DP 10–20 ≥92% Chicory Root 15–20% of Sucrose Balanced solubility & fermentation, neutral flavor General functional food, dairy fortification
High DP (Long-Chain) DP 20–60 ≥95% Chicory Root ≤5% of Sucrose Low sweetness, gel-forming, slow fermentation Gluten-free bakery, fat replacer, texture modifier
Jerusalem Artichoke Grade Average DP 9 ≥90% Jerusalem Artichoke 25–35% of Sucrose Cost-effective, quick dissolution, light sweet note Bulk low-cost fiber fortification

Core Functional Mechanism

All descriptions below follow global food claim rules, without exaggerated medical efficacy, suitable for finished product label and marketing copy.

1.Prebiotic & Gut Health Regulation

Inulin cannot be digested by human digestive enzymes. It reaches the colon intact and selectively ferments Bifidobacteria and Lactobacillus, increasing beneficial bacteria proliferation, inhibiting harmful flora growth, enhancing intestinal barrier function and improving regular bowel movement.

DP Difference: Low DP inulin ferments rapidly for quick gut regulation; High DP ferments slowly for long-term intestinal flora balance.

2.Glycemic Management (Low GI Property)

As a non-digestible carbohydrate, inulin does not trigger rapid blood glucose spikes. It delays gastric emptying and carbohydrate digestion rate, supporting steady glycemic control. Note: Not for diabetes treatment; only for low-GI functional food formulation.

3.Satiety & Weight Management Support

Inulin forms viscous gel after water absorption, extending stomach retention time, reducing appetite and total calorie intake, widely used in low-calorie meal replacement formulas.

4.Mineral Absorption Promotion

Colonic fermentation produces short-chain fatty acids, lowering intestinal pH and significantly improving calcium & magnesium bioavailability, helping reduce osteoporosis risk in functional dairy and senior nutrition products.

5.Lipid Profile Modulation

Clinical trials show dietary inulin intake helps reduce serum triglyceride levels by regulating lipid metabolism, suitable for cardiovascular health functional formulas.

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Verified B2B Industrial Application Solutions

Match DP grade with application scenarios to avoid gastrointestinal discomfort and formula failure, the core guide for R&D engineers.

1.Natural Sugar Replacer (Low DP 2–10)

  • Application: Zero-sugar beverages, functional syrups, probiotic solid drinks
  • Formulation logic: 30–40% sucrose sweetness, replace 20–50% added sugar without bitter aftertaste
  • Recommended dosage: 2–8% in liquid drinks; 5–12% in solid sachets

2. Gluten-Free Bakery & Texture Modification (High DP 20–60)

  • Application: Gluten-free bread, cookies, low-fat pastries
  • Core function: Replace gluten to improve dough viscoelasticity; act as fat replacer to reduce oil dosage by 15–30%
  • Advantage: Neutral taste, no sweet interference on bakery flavor

3.Dietary Fiber Fortification (Medium DP 10–20)

  • Application: Meal replacement powder, protein bars, dairy yogurt, cereal flakes
  • Value: Standardized 92% fiber content, stable batch consistency, easy formula calibration

4.Probiotic Compound Prebiotic System

  • Formula tip: Compound Low-DP fast fermentation + High-DP slow fermentation inulin to build dual-stage prebiotic effect, optimizing product gut health efficacy

Conclusion

As a multi-functional soluble dietary fiber and prebiotic ingredient, inulin achieves differentiated performance through adjustable DP values. Low DP grades excel in sugar replacement and solid drinks, while high DP versions dominate gluten-free bakery and fat replacement scenarios. With global regulatory compliance and stable technical parameters, it is a cost-effective core raw material for low-sugar, high-fiber and gut-health CPG products.

Ready to try Inulin for your business? Contact us at info@xianherb.com for a free sample or wholesale price list.