Further advice can be obtained by [email protected] or by calling +86-17303712627.

    Acid Protease

    Acid protease enzyme: ideal for protein breakdown in cheese making, baking, and digestive health at low pH levels.


    Chemical name: Acid protease

    Product Standard: GB23527/FCC


    The liquid is packaged in 25 kg plastic drums, the powder is packed in 20 kg bags.

    Storage Condition: Keep well closed in its original packing in a cool and dry place.

    Shelf life: 2 years.

    Buying Guide:

    Acid Protease

    Mondstar offers a diverse range of chemical products and is your preferred supplier of food additives and ingredients, providing high-quality acid protease wholesale and export services. Learn about acid protease price, or for more information, you can directly contact [email protected] or call +86-17303712627.

    Product Overview

    Acid protease is an enzyme derived from the fermentation and refined extraction of Aspergillus niger, a type of black mold. This enzyme exhibits activity within a specific range of conditions. Its effective temperature range typically falls between 30°C and 65°C, with the optimum working temperature generally between 40°C and 50°C. Moreover, this enzyme demonstrates enhanced activity under acidic conditions, with an effective pH range typically ranging from 2.0 to 6.0, and the most favorable pH range typically between 2.5 and 3.5. The activity of acid protease is influenced by the presence of certain metal ions. Some metal ions like Ca²⁺, Mg²⁺, and K⁺ can activate its activity, while others like Cu²⁺, Hg²⁺, and Al²⁺ may inhibit it. Therefore, it is essential to consider the presence and concentration of metal ions in industrial applications to maintain the enzyme's optimal activity. Acid protease is a protease with an active site containing aspartic acid. It exhibits a preference for cleaving peptide bonds involving aromatic or hydrophobic amino acids, particularly those between aromatic amino acids and other amino acids. These characteristics make acidic protease highly valuable in various industrial applications, including alcohol production, leather processing, feed preparation, food fermentation, and other fields, facilitating protein hydrolysis and product preparation needs.


    Item Index


    Field of application
    Form Liquid / solid



    Soy sauce brewing; fermentation of fermented bean curd; fermentation of fish sauce; fermentation of soy sauce products; fermentation of white wine; alcohol production; starch improvement; feed production; fur softening

    Enzyme activity 50,000-800,000 U/g




    Food grade,

    feed grade,

    industrial grade

    Optimal temperature 40-60℃


    Optimum PH


    The main application of Acid Protease
    • Acid protease in grain alcohol fermentation enhances yeast growth and boosts alcohol production, leading to higher alcohol yield and improved quality.
    • Acid protease in food and beverage industry, including vinegar, soy sauce, rice wine, and distilled spirits production, plays a key role in facilitating microbial growth and boosting fermentation.
    • Acid protease in wool processing disrupts the scales on wool fibers, aiding in the reduction and refinement of wool and making it more suitable for dyeing and further processing.
    • Acid protease in feed enzyme formulation collaborates with other enzymes to improve protein degradation and feed digestibility, enhancing animal nutrition absorption.
    • Acid protease uses in the production of single-cell protein feed supplements to break down proteins, increasing the yield and enhancing the quality of these dietary supplements.

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