GB/T 40154-2021 in English

Interpretation of the core content of the standard

This standard establishes complete technical specifications for cottonseed protein feed ingredients, focusing on the control of three core indicators: crude protein, amino acid balance and toxic substances. Technical points include:

Analysis of Technical Innovations

This standard establishes the normative definition of dephenolized cottonseed protein for the first time, and innovatively evaluates protein quality through the indicator of total amino acid ratio, breaking through the limitation of traditional focus only on crude protein content. Key technological breakthroughs:

1. Introduction of 18 kinds of amino acid balance evaluation system
2. Establishment of free cottonyphenol gradient control requirements
3. Clarification of special detection methods for sulfur-containing amino acids

Implementation and application suggestions

Key points for manufacturers

• During the raw material pretreatment stage, the cotton hull content must be controlled ≤10%
• Use low-temperature desolventizing process to ensure amino acid activity
• Establishment of a free cottonyphenol online monitoring system

Key links in quality control

Background of Standard Evolution

This standard responds to the national strategy of efficient utilization of feed protein resources and solves the three major problems in the application of cottonseed protein:

1. Amino acid loss caused by traditional processes
2. Risk control of free cottonpol toxicity
3. Imperfect product quality evaluation system