GB7300.310-2025
Feed additives—Part 3: Minerals and their complexes (or chelates)—Selenium yeast
饲料添加剂 第3部分：矿物元素及其络（螯）合物 酵母硒
GB 7300.310-2025 is an upcoming mandatory Chinese national standard for Feed additives—Part 3: Minerals and their complexes (or chelates)—Selenium yeast. 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 exclusively to feed additive selenium yeast produced using Saccharomyces cerevisiae as the fermentation strain. It covers the technical requirements, testing methods, and labeling for this specific organic trace mineral product. It is not applicable to inorganic selenium feed additives or other yeast-based products.
Technical requirements
The standard specifies stringent physical and chemical requirements for selenium yeast. Appearance must be a pale yellow to yellow-brown powder or granule, free of foreign matter and mold. Key理化指标 (physicochemical indicators) include strict limits on the concentration of organic selenium, the proportion of organic selenium to total selenium, and the specific mass fraction of selenomethionine (SeMet) relative to total selenium. Additional parameters cover moisture, crude protein, and crude ash limits. Furthermore, the standard mandates strict hygiene indicators to ensure product safety. This includes maximum limits for heavy metals such as total arsenic, lead, and cadmium. Compliance with Salmonella absence is strictly enforced.
Testing methods
Testing involves sensory evaluation for appearance and odor. Chemical analysis determines organic selenium content and its proportion of total selenium, referencing methods from GB 1903.21. A critical testing procedure is the determination of selenomethionine, which utilizes advanced analytical techniques. The standard provides detailed methodologies using Liquid Chromatography-Hydride Generation-Atomic Fluorescence Spectrometry (LC-HG-AFS) and Liquid Chromatography-Inductively Coupled Plasma Mass Spectrometry (LC-ICP/MS). Heavy metal and microbiological tests are also conducted per referenced national standards.
FAQs
What products are regulated under GB 7300.310-2025?
This standard applies specifically to selenium yeast produced by fermenting Saccharomyces cerevisiae. It does not apply to inorganic selenium additives like sodium selenite, which are covered under separate parts of the GB 7300 series.
Are there any updates from the previous version of GB 7300.310?
As a new standard published in 2025, it establishes updated and stringent requirements for organic selenium conversion rates and specific selenomethionine content, utilizing advanced analytical methods like LC-HG-AFS and LC-ICP/MS to ensure product quality and safety.
How does GB 7300.310-2025 differ from ISO standards?
The standard incorporates methodologies aligned with international analytical practices, such as LC-ICP/MS for speciation analysis. However, it sets specific national thresholds for organic selenium proportion and selenomethionine content that must be met for mandatory compliance in China.
The summary above provides a high-level overview of GB 7300.310-2025. 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 7300.310-2025 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