General and Chemical Information

Vitamin B7, commonly known as Biotin, is a micronutrient belonging to the water-soluble B vitamin group. Structurally, it possesses a complex ring structure formed by the combination of thiophene and urea rings, containing a hydroxypentanoyl chain. Biotin functions as a coenzyme in fundamental biochemical pathways such as fatty acid synthesis, amino acid metabolism, and gluconeogenesis. Due to its chemical structure, it can be found in various forms (powder, crystalline); however, high-purity forms are generally preferred in dietary supplement products.

Product Forms

The Vitamin B7 (Biotin) raw material available in the ASUKA Kimya product catalog is formulated in different purity levels to meet the needs of dietary supplement manufacturers. According to existing literature and product classification, the main commercial forms of this vitamin are:

  • Biotin (Powder 100%): The active substance in high-purity powder form used for the preparation of dietary supplements (capsules, tablets, powder formulations).

Eligibility for Food Fortification

The question of whether Biotin can be fortified into ordinary foods (dairy products, beverages, snacks, etc.) beyond dietary supplements requires a critical distinction from a food regulatory perspective. The "Annex-1" list published under the Turkish Food Codex "Regulation on the Addition of Vitamins and Minerals to Foods" specifies the vitamins and minerals permitted for addition to foods. Within the framework of this regulation, there is no permission for the direct addition of Vitamin B7 (Biotin) to foods. Therefore, Biotin is marked as NO in the Annex-1 list, and fortifying ordinary foods with it is contrary to regulations.

Daily Intake Dosage in Dietary Supplements

Dosage limitations for products marketed as dietary supplements containing Biotin are regulated by the "List of Daily Intake Dosages and Restricted Substances in Dietary Supplements" published by the Ministry of Agriculture and Forestry. In accordance with this official document, the accepted daily intake dosage range for dietary supplements containing Vitamin B7 (Biotin) for individuals aged 11 and above is as follows:

1250 μg/day – 5000 μg/day (Ages 11 and above)

Regulations and Restrictions

The production, labeling, and marketing conditions of dietary supplements are subject to strict regulatory frameworks. Manufacturers must comply with the following documents and requirements for products containing Vitamin B7:

  • Approval Procedures: It is mandatory to submit an approval application to the directorates in the province where the manufacturer is located for each dietary supplement to be placed on the market.
  • Specification Certificate: A specification certificate must be issued indicating the nature (e.g., powder), unit (e.g., tablet, capsule), and amount per daily intake dose of the Biotin used in the product formulation.
  • Labeling: Product labels must provide information explaining the recommended daily consumption amount and any precautions to be taken.
  • Dosage Limitations: The amount of Biotin in products must be within the limits specified in the "List of Daily Intake Dosages and Restricted Substances in Dietary Supplements" (1250 μg/day – 5000 μg/day).