Kojic Acid Powder

Kojic Acid Powder Supplier:

Guanjie Biotech has focused on kojic acid powder research, producing and trading for 20 years. It is a white crystalline powder, and the content of it that we can reach is>99%. We have independent factories and labs. As a kojic acid powder supplier, you can choose us, and we can provide you best service.

 

 

Why choose Guanjie Biotech?

● ISO 9001,ISO22000,HALAL,KOSHER APPROVED;

●Innovative technology: Focused on the development of patented natural products with 3 patented technologies.

●Our product and quality control center is beside our office. We have all kinds of Kojic Acid Powder testing machines, such as HPLC, GC, AAS, melting point, specific optical rotation, bacterial detection, PH, Ash content, and so on.

 

What Is Kojic Acid Powder?

Kojic Acid Powder is a natural organic compound found primarily in mushrooms, fermented soy sauce, and fermented rice. This compound is a potent inhibitor of pigmentation, preventing the formation of melanin, and is highly sought after for its skin-lightening and anti-aging properties. Kojic acid is a popular ingredient in many skincare products such as soaps, creams, lotions, and facial masks.
 

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How Is Kojic Acid Powder Produced?

Kojic acid powder is primarily manufactured through a controlled microbial fermentation process using carbohydrate-rich raw materials. The production relies on specific fungal strains, most commonly Aspergillus species, which convert sugars into kojic acid as a secondary metabolite under optimized environmental conditions. The industrial process combines traditional fermentation principles with modern purification technologies to achieve high purity and stability suitable for cosmetic, pharmaceutical, and food applications.

● Raw Material Preparation
The kojic acid powder production begins with the selection of suitable carbohydrate sources, typically rice, rice bran, corn starch, molasses, soybean derivatives, or malt extract. These materials provide the necessary carbon and nutrient supply for microbial growth. The raw materials are thoroughly cleaned to remove impurities and contaminants, then soaked in water-often overnight-to ensure adequate hydration and uniform texture before thermal processing.

● Steaming and Sterilization
After soaking, the raw materials are steamed under controlled temperature and pressure conditions. Steaming softens the substrate, gelatinizes starch, and sterilizes the material by eliminating unwanted microorganisms. This step is critical because it creates an optimal environment for the desired fungal strain to dominate during fermentation without microbial competition.

● Fungal Inoculation (Koji Formation)
Once cooled to an appropriate temperature, a fermentation starter culture-commonly referred to as "koji"-is introduced. This starter contains spores of fungi such as Aspergillus oryzae or related species capable of producing enzymes that break down complex carbohydrates into fermentable sugars. The inoculated substrate is mixed thoroughly to ensure even distribution of the microorganisms, which promotes consistent fermentation performance.

● Solid-State Incubation
The inoculated material undergoes incubation for approximately 2–3 days under carefully controlled environmental conditions, typically around 30 °C with relative humidity between 70% and 80%. During this period of Kojic Acid Powder, fungal enzymes such as amylases and proteases degrade starches and proteins into simpler nutrients. This stage forms enzyme-rich koji, which serves as the precursor for subsequent kojic acid production.

● Submerged Fermentation
The prepared koji is transferred into fermentation tanks containing additional nutrients, such as glucose, yeast extract, nitrogen sources, and mineral salts. Under aerated and controlled pH conditions, the fungi metabolize sugars and synthesize kojic acid as part of their metabolic pathway. Fermentation duration can vary from several days to over a week, depending on strain efficiency and process optimization.

● Extraction and Separation
After fermentation is complete, the broth contains bulk kojic acid along with biomass, residual nutrients, and by-products. The mixture is filtered or centrifuged to remove fungal cells and insoluble materials. The clarified liquid then undergoes extraction using solvent systems or adsorption techniques to isolate crude aspergillic acid.

● Purification and Crystallization
The crude extract is further purified through decolorization, activated carbon treatment, ion exchange, and recrystallization processes to remove impurities. Controlled crystallization yields high-purity kojic acid crystals, which are then dried under vacuum or low-temperature conditions to preserve stability and prevent degradation.

● Final Processing
The dried crystals are milled into fine powder, sieved to achieve uniform particle size, and subjected to quality control testing, including purity assays, moisture analysis, and microbial limits. The resulting kojic acid powder is packaged under controlled conditions to protect it from light, moisture, and oxidation, ensuring product quality for downstream applications.

 

What is kojic acid powder Used For?

Kojic acid powder is widely used as a skin-lightening agent in cosmetics for its ability to inhibit melanin production. It is found in a variety of skin-care products, including facial masks, night creams, and lotions. Additionally, kojic acid is used in some topical treatments for hyperpigmentation disorders, such as melasma and freckles. Apart from its cosmetic application, kojic acid has various other applications such as:
● Food industry:

Kojic acid bulk powder is widely used as a natural food preservative to inhibit the growth of bacteria, fungi, and molds in food products.
●Pharmaceutical industry:

Kojic acid powder is used in several medications to treat fungal infections such as ringworm and athlete's foot.
● Agriculture:

It is used as a plant growth regulator, improving the quality of fruits and vegetables.
● Analytical chemistry:

In analytical chemistry, kojic acid powder is used to test for reducing sugars.

 

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