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GB 1903.79-2025National food safety standard - Food nutrition fortifier - L-Lysine-L-aspartate (English PDF)

食品安全国家标准食品营养强化剂 L-赖氨酸 L-天（门）冬氨酸盐

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Issued by

SAMR; SAC

Level / Type

National · Mandatory

Issue date

September 2, 2025

Implementation date

March 2, 2026

Scope

GB 1903.79-2025 is the English-translated version of 食品安全国家标准食品营养强化剂 L-赖氨酸 L-天（门）冬氨酸盐.

GB 1903.79-2025 is a mandatory national food safety standard for L-lysine L-aspartate as a nutritional fortifier. Lysine is an essential amino acid and the one most often limiting in cereal-based diets, which is why it is added to foods in populations that depend heavily on wheat, rice or maize.

Free lysine, however, is hygroscopic and reactive: it takes part readily in the Maillard reaction, so it browns the product, develops off-flavours and, worse, destroys itself during processing and storage, meaning the label figure and the delivered amount diverge.

Pairing it as a salt with aspartic acid - itself an amino acid - gives a stable crystalline material that survives processing and contributes a second amino acid rather than a counter-ion of no nutritional value.

This standard applies to L-lysine L-aspartate as a food nutrition fortifier, produced by fermentation from starch or sugars, or by chemical synthesis from L-lysine or a lysine salt and L-aspartic acid.

As a GB, compliance is compulsory. It is the reference for amino acid producers, for the food and supplement manufacturers using it, and for the food safety authorities.

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Document preview — GB 1903.79-2025

National Standard of the People's Republic of China

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

1 Scope3
2 Chemical name, molecular formula, structural formula, and relative molecular mass3
3 Technical requirements3
Appendix A Test methods5
Appendix B Reference infrared spectrogram of L-Lysine-L-aspartate standards11

Foreword

National food safety standard - Food nutrition fortifier L-Lysine-L-aspartate

National food safety standard - Food nutrition fortifier L-Lysine-L-aspartate 1 Scope

This standard applies to L-Lysine-L-aspartate, a food nutrition fortifier, which is produced by fermentation using starch or sugars as raw materials, or by chemical synthesis using L-lysine (or L-lysine salt) and L-aspartic acid as raw materials.

2 Chemical name, molecular formula, structural formula, and relative molecular mass 2.1 Chemical name

L-2,6-Diaminohexanoic acid L-2-aminosuccinate

1 Scope

This standard applies to L-Lysine-L-aspartate, a food nutrition fortifier, which is

produced by fermentation using starch or sugars as raw materials, or by chemical

synthesis using L-lysine (or L-lysine salt) and L-aspartic acid as raw materials.

2 Chemical name, molecular formula, structural formula, and

relative molecular mass

2.1 Chemical name

L-2,6-Diaminohexanoic acid L-2-aminosuccinate

2.2 Molecular formula

2.3 Structural formula

2.4 Relative molecular mass

279.29 (based on the international relative atomic mass in 2022).

Remaining clauses in the full document

3 Technical requirements
3.1 Sensory requirements

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

Similar standards

GB 38031-2025|GB/T 601|GB/T 602|GB/T 603|GB/T 6682.|GB/T 32199|GB/T 6040.|GB 1903.77

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