Overview
Tangerine peel fiber is extracted from the white pith (albedo) of citrus fruits, primarily tangerines (Citrus reticulata). This byproduct of juice production has gained attention as a sustainable functional ingredient. The fiber consists mainly of pectin, cellulose, and hemicellulose, offering unique rheological properties. The production process typically involves drying, milling, and sometimes enzymatic treatment of the peel. As a clean-label ingredient, it serves as an alternative to synthetic thickeners and stabilizers in various industries. The fiber's composition varies slightly depending on the citrus variety and processing methods.
Physical and Chemical Properties
Tangerine peel fiber exhibits remarkable water-holding capacity, absorbing 10-20 times its weight in water. This property makes it valuable for texture modification in food products. The fiber contains bioactive compounds including flavonoids (hesperidin, naringin) and essential oils that contribute to its functional benefits. Chemically, it's a complex matrix of polysaccharides with both soluble and insoluble fiber components. The soluble fraction (mainly pectin) provides gelling properties, while the insoluble portion contributes to bulk. Its emulsification ability stems from natural surface-active compounds present in the citrus peel matrix.
Main Applications
In the food industry, tangerine peel fiber serves as a natural thickener in sauces, dressings, and dairy alternatives. It improves texture in gluten-free baking and enhances moisture retention in meat products. The fiber's health benefits have led to its inclusion in dietary supplements and functional foods targeting digestive health. Pharmaceutical applications include use as a tablet binder and disintegrant. Cosmetic formulators utilize its water-binding capacity in skincare products. Recent innovations include its use in edible films and biodegradable packaging materials, capitalizing on its film-forming properties.
Safety and Storage
Tangerine peel fiber is generally considered safe for consumption, with no known toxicity. However, excessive intake may cause gastrointestinal discomfort due to its high fiber content. Proper storage is essential to maintain quality - exposure to moisture can lead to clumping and microbial growth. Suppliers typically package the fiber in multi-layer bags with moisture barriers. For extended shelf life, storage in climate-controlled environments is recommended. Quality degradation can be identified by changes in color (darkening) or the development of off-odors, indicating possible oxidation or contamination.
B2B Procurement Guide
When sourcing tangerine peel fiber, buyers should confirm the product's particle size distribution, which affects functionality in different applications. Technical specifications should include water-binding capacity measurements and microbial limits. Organic certification may be required for certain markets. Leading producers are concentrated in citrus-growing regions, particularly China, Brazil, and Mediterranean countries. Minimum order quantities typically range from 500kg to 1 metric ton for bulk purchases. Sample testing is recommended to verify performance in specific formulations before large-scale procurement.
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