GB7300.401-2019
Feed additives—Part 4：Enzymes—Xylanase
饲料添加剂 第4部分：酶制剂 木聚糖酶
GB 7300.401-2019 is a current mandatory Chinese national standard for Feed additives—Part 4：Enzymes—Xylanase. It appears in the Food compliance cluster with a product safety focus and has an implementation date of Jul 1, 2020.
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 specifically to feed additive xylanase produced through liquid fermentation using Pichia pastoris, available in both liquid and solid forms with or without excipients. It is mandatory for manufacturers producing and supplying xylanase enzyme preparations for the animal feed industry in China. The standard does not cover xylanase produced via other microbial strains or fermentation processes.
Technical requirements
The standard defines the physical and chemical parameters for xylanase used as a feed additive. It specifies general appearance criteria, requiring solid forms to have uniform granularity and good flowability, while liquid forms may contain minor flocculent precipitates. A core technical requirement is the enzyme activity unit, which is strictly defined based on the amount of reducing sugar released per minute under specific temperature and pH conditions. The standard mandates minimum activity thresholds for both solid and liquid preparations. Additionally, it establishes strict safety limits for heavy metals—including arsenic, lead, cadmium, and mercury—as well as mycotoxins like aflatoxin B1 and zearalenone. Microbiological safety is also strictly controlled, with absolute limits set for pathogens like Salmonella and coliforms. These contaminant limits are particularly critical for products utilizing plant-based excipients.
Testing methods
The standard outlines a comprehensive suite of testing procedures to verify compliance. Enzyme activity is measured using spectrophotometry as defined in GB/T 23874. Physical properties such as moisture content, particle size, and pH are evaluated using specific national testing methods. Chemical safety testing includes atomic absorption spectroscopy for heavy metals (referencing GB/T 13080 for lead, etc.) and high-performance liquid chromatography for mycotoxins. Microbiological evaluations for Salmonella and coliforms follow dedicated feed testing standards. Manufacturers must conduct both routine factory inspections and periodic type tests to ensure ongoing compliance.
FAQs
What products are regulated under GB 7300.401-2019?
It applies to liquid or solid feed additive xylanase produced through liquid fermentation using Pichia pastoris, with or without the addition of approved excipients.
Is compliance with GB 7300.401-2019 mandatory?
Yes, it is a mandatory national standard. Chapters 1, 4, 5, and 6—which cover scope, technical requirements, testing methods, and inspection rules—are legally binding, making full compliance essential for market access.
What are the key safety limits specified for heavy metals and toxins?
The standard sets specific limits for heavy metals (arsenic, lead, cadmium, mercury) and mycotoxins (aflatoxin B1, zearalenone, deoxynivalenol), along with microbiological limits for Salmonella and coliforms. These safety parameters must be strictly adhered to alongside the minimum enzyme activity requirements.
The summary above provides a high-level overview of GB 7300.401-2019. 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 7300.401-2019 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
- Ministry of Agriculture and Rural Affairs