Phytosterol Powder[2]
Overview
Phytosterol Powder is a natural plant-derived compound structurally similar to cholesterol, extracted from vegetable oils like soybean, rapeseed, or pine. Comprising primarily β-sitosterol, campesterol, and stigmasterol, it is widely used for its ability to reduce LDL cholesterol absorption in humans. As a functional ingredient, phytosterols are backed by FDA and EFSA health claims for cardiovascular benefits. The powder form offers formulation flexibility for tablets, capsules, and fortified foods, making it a staple in nutraceutical and functional food industries.
Physical and Chemical Properties
Phytosterol Powder exhibits high thermal stability, withstanding temperatures up to 200°C without significant degradation, making it suitable for baked goods. Its insolubility in water necessitates emulsification for liquid applications, while its solubility in fats aligns with lipid-based formulations. The powder is chemically stable under dry conditions but may oxidize if exposed to prolonged humidity. Particle size distribution (typically 50-200 mesh) affects dissolution rates and bioavailability, with micronized versions offering enhanced absorption in dietary supplements.
Main Applications
In functional foods, phytosterols are added to margarines, dairy products, and beverages at 0.8-3% concentrations to deliver cholesterol-lowering effects. The pharmaceutical industry utilizes it in lipid-regulating formulations, often esterified to improve solubility. Cosmetic applications leverage its anti-inflammatory properties in creams and serums for skin barrier repair. Emerging uses include animal feed additives to improve livestock lipid profiles and as emulsifiers in biodegradable packaging materials.
Safety and Storage
Phytosterol Powder is classified as GRAS by the FDA, with a typical daily intake limit of 3g to avoid potential interference with fat-soluble vitamin absorption. Industrial handling requires dust control measures to prevent respiratory irritation. Optimal storage involves airtight containers with desiccants at 15-25°C. Shelf life extends to 2-3 years when protected from oxidation. Certificates of Analysis should confirm absence of heavy metals (e.g., lead <1ppm) and microbial contaminants.
B2B Procurement Guide
Bulk buyers should prioritize suppliers with ISO 9001 certification and organic/non-GMO documentation if required. Key specifications include total phytosterol content (≥90%), residual solvents (<50ppm ethanol), and peroxide value (<10 meq/kg). For food/pharma applications, request EU/USP-grade material with full traceability. Sample testing for flowability and dissolution rate is recommended. Container shipments (25kg drums) typically offer better unit pricing than retail packaging, with MOQs starting at 100kg for customized formulations.
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