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    Soy Protein Isolate

    Soy protein isolate (SPI): a concentrated protein source for enhanced nutrition and diverse food applications.


    Chemical name: Soy Protein Isolate; soy isolate protein; Isolated soy protein; SPI

    CAS Number: 9010-10-0

    EINECS Number: 232-752-2

    Product Standard: GB/EP/FCC


    20kg paper-plastic composite bag lined with PE film.

    25kg paper-plastic composite bag lined with PE film.

    Storage Condition: Kept in a light-proof,well-closed, dry and cool place.

    Shelf life: 2 years.

    Buying Guide:

    Soy Protein Isolate Buying Guide

    Mondstar offers a diverse range of chemical products and is your preferred supplier of food additives and ingredients, providing high-quality soy protein isolate powder wholesale and export services. For more information, you can directly contact [email protected] or call +86-17303712627.

    Product Overview

    Soy Protein Isolate (SPI) is a highly pure protein extracted from soybeans. It is a versatile food ingredient widely used in the food and beverage industry. SPI is valued for its nutritional benefits, protein enrichment, and its ability to improve the texture and functionality of various food products.SPI contains at least 90% protein by weight, making it the purest form of soy protein available. It has a relatively neutral flavor, which means it doesn't impart strong tastes to food or beverages. SPI readily dissolves in water, particularly in cold water, forming a clear solution with minimal to no particle residue. In addition to its protein content, SPI contains essential amino acids, adding to its nutritional value. It is low in saturated fat and is cholesterol-free, making it a suitable choice for healthier food formulations.

    Soy Protein Isolate comes in various forms, including dispersible, gelling, injectable, and emulsifying types, and it finds widespread applications in the food and beverage industry. These applications encompass plant-based meat alternatives, dairy substitutes, protein bars, baked goods, nutritional supplements, and more. Its versatility and nutritional profile make it a key ingredient in the food industry, particularly in products aimed at meeting the growing demand for plant-based options and protein-rich choices.


    Item Index
    dispersion type gel type injection type emulsifying type






    Protein content

    (dry base)

    ≥ 90% ≥ 90% ≥ 90% ≥ 90%
    Water content ≤ 7.0% ≤ 7.0% ≤ 7.0% ≤ 7.0%
    Fat ≤ 1.0% ≤ 1.0% ≤ 1.0% ≤ 1.0%
    Ash content ≤ 6.0% ≤ 6.0% ≤ 6.0% ≤ 6.0%
    Corase fiber ≤ 0.5% ≤ 0.5% ≤ 0.5% ≤ 0.5%
    Graininess ≥ 95% ≥ 95% ≥ 95% ≥ 95%
    Nitrogen soluble index / ≥ 88% / /







    Total numbers of colony

    n=5 c=2 m=30000CFU/g M=100000 CFU/g n=5 c=2 m=30000CFU/g M=100000 CFU/g n=5 c=2 m=30000CFU/g M=100000 CFU/g n=5 c=2 m=30000CFU/g M=100000



    Coli group

    n=5 c=1 m=10CFU/g

    M=100 CFU/g

    n=5 c=1 m=10CFU/g M=100 CFU/g n=5 c=1 m=10CFU/g M=100 CFU/g n=5 c=1 m=10CFU/g M=100 CFU/g
    Mold, yeast ≤ 50CFU/g ≤ 50CFU/g ≤ 50CFU/g ≤ 50CFU/g
    Coli bacillus < 3.0MPN/g < 3.0MPN/g < 3.0MPN/g < 3.0MPN/g
    Salmonella Negative Negative Negative Negative
    SA Negative Negative Negative Negative
    The main application of Soy Protein Isolate
    • Soy Protein Isolate in meat alternatives is commonly utilized for the production of vegetarian and vegan options, including soy-based burger patties, sausages, meatballs, and chicken nuggets, offering a plant-based substitute for traditional meats.
    • Soy Protein Isolate in protein and nutritional bars acts as a high-quality protein source, enhancing the nutritional value while allowing the bars' natural flavors to remain prominent.
    • Soy Protein Isolate in dairy substitutes is instrumental in elevating the protein content and imparting a smooth, creamy texture to products like soy milk, vegan yogurt, cheese alternatives, and non-dairy ice cream.
    • Soy Protein Isolate in bakery products, when added to items such as bread, muffins, and cookies, not only boosts the protein content but also aids in moisture retention, resulting in a softer texture.
    • Soy Protein Isolate in beverages is celebrated for its excellent solubility, making it a popular choice for high-protein drinks, smoothies, and milkshakes, where it dissolves cleanly without leaving sediment.
    • Soy Protein Isolate in infant formula serves as a plant-based, low-allergenic protein source, especially suitable for lactose-free and dairy-free formulas catered to infants.
    • Soy Protein Isolate in vegetarian sausages replicates the binding and fat encapsulation properties of meat, thus contributing to an excellent texture in these plant-based alternatives.
    • Soy Protein Isolate in puffed snacks plays a crucial role in creating a porous structure in snacks like protein chips, achieved through extrusion cooking.

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