Overview
Inulin fruit extract is a natural polysaccharide derived from plants like chicory root and Jerusalem artichoke. It is classified as a soluble dietary fiber and prebiotic, meaning it fosters the growth of beneficial gut bacteria. The extract is prized for its dual role as a low-calorie sweetener and a functional ingredient in health-focused products. Industrially, inulin is extracted through hot water diffusion, followed by purification and spray-drying. Its neutral taste and high solubility make it versatile for food and pharmaceutical formulations. The global demand for inulin has grown due to rising consumer awareness of gut health and natural sweeteners.
Physical and Chemical Properties
Inulin is a fructan polymer composed of fructose units linked by β(2→1) bonds, often terminated by a glucose molecule. Its molecular weight varies (typically 2,000–6,000 Da) depending on the source plant and extraction process. The powder is hygroscopic, requiring airtight packaging to prevent moisture absorption. Chemically, inulin is resistant to human digestive enzymes, reaching the colon intact where it ferments. This property underpins its prebiotic effects. It forms gels in water at high concentrations, useful for texture modification in foods. Its stability is pH-dependent, degrading under highly acidic conditions (pH < 3).
Main Applications
Inulin fruit extract is widely used in functional foods like yogurt, cereal bars, and infant formula to enhance fiber content without altering taste. In beverages, it acts as a sugar replacer while adding creaminess to low-fat drinks. The pharmaceutical industry employs it as an excipient in tablets and a carrier for controlled-release drugs. Beyond nutrition, inulin serves as a fat substitute in baked goods, providing mouthfeel with fewer calories. Recent research explores its potential in weight management and diabetes prevention due to its low glycemic index (14–15).
Safety and Storage
Inulin is GRAS-certified by the FDA and approved by EFSA for food use. Side effects like gas or bloating may occur at doses exceeding 20 g/day, especially for individuals unaccustomed to high-fiber diets. Allergic reactions are rare but possible in sensitive individuals. Storage requires protection from humidity and heat to prevent clumping. Bulk quantities should be kept in moisture-proof containers with desiccants. Shelf life typically exceeds 24 months when stored below 25°C and 65% relative humidity.
B2B Procurement Guide
When sourcing inulin fruit extract, prioritize suppliers with ISO 22000 or FSSC 22000 certification to ensure food safety compliance. Key specifications include purity (≥90% inulin), particle size (80–100 mesh for uniform blending), and absence of contaminants like heavy metals. For organic products, verify USDA/EU organic certification. Pricing depends on volume, with discounts common for orders above 1 metric ton. Sample testing for solubility and microbial limits is recommended before large-scale procurement. Preferred packaging includes 25 kg multi-layer paper bags with polyethylene liners.
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