GB7300.506-2025
Feed additives—Part 5：Live microorganisms—Lactobacillus delbrueckii subsp. lactis
饲料添加剂 第5部分：微生物 德式乳杆菌乳酸亚种
GB 7300.506-2025 is an upcoming mandatory Chinese national standard for Feed additives—Part 5：Live microorganisms—Lactobacillus delbrueckii subsp. lactis. It appears in the Food compliance cluster with a product safety focus and has an implementation date of Jan 1, 2027.
Applicability depends on product scope, certification route, competent authority notices and transition rules. Requst for the translation or verify source before using this record in a compliance decision.
Compliance overview
Scope and applicability
This standard applies to solid feed additive products utilizing Lactobacillus delbrueckii subsp. lactis as the primary microbial strain. It covers products manufactured through processes such as liquid fermentation, separation, and drying, with or without the addition of carriers. This standard is mandatory for manufacturers producing or exporting this specific microbial feed additive to the Chinese market.
Technical requirements
The standard outlines the physical, chemical, and biological parameters for the product. It specifies that the appearance must be a uniform powder or granule without off-odors or mold. A critical requirement is the strain identification, which must be verified through morphological, physiological, biochemical, and molecular biology methods. The standard sets strict quality indicators, including minimum viable cell counts and maximum moisture limits. Furthermore, it establishes rigorous hygiene limits for contaminants such as heavy metals (e.g., lead, arsenic, mercury, cadmium) and mycotoxins. Compliance with these microbiological and contaminant limits is essential for product approval.
Testing methods
Testing involves several standardized procedures to ensure product integrity. Strain identification is conducted using morphological observation and PCR-based molecular biology techniques, including 16S rRNA sequencing. Viable cell counting is performed using specific plate methods on MRS agar under anaerobic conditions. Additionally, the standard references various national methods for determining moisture, particle size, heavy metals, mycotoxins, and pathogenic microorganisms like Salmonella.
FAQs
What products are regulated under GB 7300.506-2025?
This standard applies to solid feed additive products containing Lactobacillus delbrueckii subsp. lactis as the active strain, produced via liquid fermentation, separation, and drying processes. It is mandatory for manufacturers exporting microbial feed additives to China.
Are there any specific updates in GB 7300.506-2025 compared to previous versions?
This standard is part of the broader GB 7300 series for feed additives. It specifically focuses on the Lactobacillus delbrueckii subsp. lactis strain, detailing its unique identification methods, specific quality indicators, and corresponding hygiene limits.
How does GB 7300.506-2025 differ from ISO standards for microbial feed additives?
The standard incorporates internationally recognized testing principles, such as 16S rRNA sequencing for molecular identification, but it establishes specific domestic limits for heavy metals and mycotoxins. Manufacturers must ensure their products meet these Chinese national limits rather than just ISO parameters.
The summary above provides a high-level overview of GB 7300.506-2025. To ensure complete compliance for your feed additive products entering the Chinese market, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of GB 7300.506-2025 today to access all detailed parameters, tables, and testing procedures.
Applicability hints
- Type
- Product
- CCS
- B46
- ICS
- 65.120
- Competent department
- Ministry of Agriculture and Rural Affairs
- Technical committee
- National Technical Committee on Feed Industry of Standardization Administration of China