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 é uma norma nacional chinesa obrigatória vigente: Feed additives—Part 4：Enzymes—Xylanase. Setor: Alimentos. Foco: Segurança de produtos. Entrada em vigor: 1 de jul. de 2020.

A aplicabilidade depende do escopo do produto, da via de certificação, dos avisos da autoridade competente e das regras de transição. Solicite uma tradução ou verifique a fonte antes de usar este registro em uma decisão de conformidade.

Visão geral de conformidade

Esta visão geral está disponível por enquanto apenas em inglês.

Escopo e aplicabilidade

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.

Requisitos técnicos

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.

Métodos de ensaio

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.

Perguntas frequentes

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.

Indicações de aplicabilidade

Tipo: Produto
CCS: B46
ICS: 65.120
Órgão competente: Ministry of Agriculture and Rural Affairs
Comitê técnico: Ministry of Agriculture and Rural Affairs