GB 7300.101-2019Feed additives - Part 1: Amino acids, their salts and analogues - L-Threonine (English PDF)

Foreword

Chapters 1, 4, 5, and 6 of this part are mandatory, and the rest are recommended. GB 7300 "feed additives" is divided into several parts by product. This section is Part 101 of GB 7300. This section is drafted in accordance with the rules given in GB/T 1.1-2009. This section replaces GB/T 21979-2008 "feed grade L-threonine", compared with GB/T 21979-2008 main technical changes as follows:

--- Modified the L-threonine content index (see 4.3, see

3.2 in.2008 version);

--- Increased pH indicator (see 4.3);

--- Revised the index of heavy metals (as Pb) (see 4.3, see

3.2 in the.2008 edition);

--- Revised the total arsenic (as As) indicator (see 4.3, see

3.2 in the.2008 edition);

--- Deleted the concentration correction of perchloric acid standard titration solution in the determination of L-threonine content (see

4.2.4 of the.2008 edition);

--- Modified the factory inspection requirements (see 6.3, see

5.2 of the.2008 version);

--- Modified the shelf life requirements (see 7.5, see

6.5 of the.2008 version). Please note that some elements of this document may involve patents. The issuer of this document is not responsible for identifying these patents. This section is proposed and managed by the Ministry of Agriculture and Rural Affairs of the People's Republic of China. This section was drafted. China Agricultural University, Ministry of Agriculture and Rural Feed Quality Supervision and Testing Center (Xi'an). The main drafters of this section. Yan Shiyan, Zeng Xiangfang, Yang Fengjuan, Xie Chunyuan, Zhao Caihui, Li Huiling. The previous versions of the standards replaced by this section are.

1 Scope

GB 7300.101-2019 is the Chinese national standard on feed additives - part 1: amino acids, their salts and analogues - l-threonine, in the field of agriculture. It carries no /T suffix, which in the Chinese system means compliance is mandatory: a product or a practice within its scope has to meet it to be lawfully made, sold or carried out in China. It was issued on 17 December 2019 by the State Administration for Market Regulation; Standardization Administration of China, and has been in force since 1 July 2020. Classification: ICS 65.120, CCS B46. This page is published from the official record of the standard held by the Chinese standards administration: the identification, the dates, the classification and the issuing body are taken from there. The clause text, the tables and the numeric limits are in the document itself, which is delivered complete in English translation.

This part of GB 7300 specifies the technical requirements, test methods, inspection rules, labeling, packaging, and transportation of feed additive L-threonine. Loss, storage and shelf life. This section applies to L-threonine, a feed additive made from starch or sugar as the main raw material and fermented and extracted.

2 Normative references

The following documents are essential for the application of this document. For dated references, only the dated version applies to this article Pieces. For undated references, the latest version (including all amendments) applies to this document. Preparation of

GB/T 601 chemical reagent standard titration solution

GB/T 602 Preparation of standard solutions for impurity determination of chemical reagents Preparation of preparations and products used in

GB/T 603 chemical reagent test method

GB/T 6435 Determination of moisture in feed

GB/T 6438 Determination of crude ash in feed

GB/T 6682 Analytical laboratory water specifications and test methods

GB/T 8170 Numerical rounding rules and expression and judgment of limit values GB 10648 feed label

GB/T 13079 Determination of total arsenic in feed

GB/T 14699.1 Feed sampling Pharmacopoeia of the People's Republic of China (2015 edition four)

3 Chemical name, molecular formula, relative molecular mass and structural formula Chemical name. L-2-amino-3-hydroxybutyric acid Molecular formula. C4H9NO

3 Relative molecular mass. 119.12 (according to.2016 international relative atomic mass) Structural formula.

4 Technical requirements

4.1 Appearance and properties White to light brown crystal or crystalline powder; odorless; soluble in water, almost insoluble in ethanol.