GB7300.404-2025
Feed additives—Part 4：Enzymes—β-Mannanase
饲料添加剂 第4部分：酶制剂 β-甘露聚糖酶
GB 7300.404-2025 is an upcoming mandatory Chinese national standard for Feed additives—Part 4：Enzymes—β-Mannanase. It appears in the Food compliance cluster with a product safety focus and has an implementation date of Jul 1, 2026.
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 feed additive β-mannanase products derived from fungal strains listed in the Feed Additive Variety Catalog, processed via fermentation, separation, and carrier addition. It is applicable to both solid and liquid enzyme preparations used in animal feed. It does not apply to other types of enzyme preparations or non-microbial feed additives.
Technical requirements
The standard specifies comprehensive technical requirements for β-mannanase, categorized into appearance, quality indicators, and hygiene parameters. For appearance, solid forms must be uniform and free-flowing without mold, while liquid forms must be homogeneous with minimal precipitation. Quality indicators mandate minimum enzyme activity levels and specific physical parameters like moisture content and particle size for solid forms, and pH ranges for liquid forms. Hygiene parameters strictly limit heavy metals (such as arsenic, lead, cadmium, and mercury) and microbial contaminants, including Salmonella and E. coli.
Testing methods
Testing methods involve visual inspection for appearance and specific analytical procedures for quality and hygiene parameters. Enzyme activity is determined using a spectrophotometric method referenced in GB/T 36861. Heavy metals and mycotoxins are tested using standardized chromatographic and spectroscopic methods to ensure compliance with safety limits. Microbial contaminants are evaluated using established cultural and enumeration techniques.
FAQs
What products are regulated under GB 7300.404-2025?
This standard applies to feed additive β-mannanase products derived from approved fungal strains, available in both solid and liquid forms. It is mandatory for all manufacturers producing or supplying this specific enzyme to the Chinese market.
Are there any updates from the previous version of GB 7300.404?
As a newly released standard (effective July 1, 2026), it provides updated technical and safety requirements for β-mannanase, aligning with current Chinese feed safety regulations. Manufacturers must transition to these new specifications to maintain market access. It specifically references GB/T 36861 for standardized enzyme activity determination.
How does GB 7300.404-2025 differ from ISO standards?
While the core testing methodologies often align with international practices, this standard incorporates specific Chinese regulatory limits for mycotoxins and heavy metals as defined by the national feed safety framework. Compliance with ISO standards does not automatically guarantee compliance with GB requirements.
The summary above provides a high-level overview of GB 7300.404-2025. 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 7300.404-2025 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