Food additive - Sodium glutamate detection

The full names of these two latest standards for sodium glutamate are GB 1886.306-2020 "National Food Safety Standard for Food Additives - Sodium Glutamate" and GB 7300.1001-2020 "Feed Additives - Part 10: Flavoring and Inducing Substances - Sodium Glutamate". GB represents a national mandatory standard. Of course, sodium glutamate itself also has a national recommended standard GB/T 8967-2007 "Sodium Glutamate (Monosodium Glutamate)". So, when testing for sodium glutamate, it is important to choose the right standard, otherwise it may go completely different and the test report obtained may not be necessary

We found in a horizontal comparison of the provisions for glutamate detection items in GB 1886.306-2020 and GB 7300.1001-2020. The physical and chemical indicator testing items specified in the two standards are basically the same. However, as a food additive, GB 1886.306-2020 includes an additional iron content testing item with a requirement of iron content ≤ 5mg/kg. Other similar testing items and requirements are as follows:

1. The requirement for glutamic acid content testing is ≥ 99%

2. The requirement for transmittance detection is 98%

3. The pH value detection requirement should be between 6.7 and 7.5

4. The specific rotation detection requirement should be between+24.9-+25.3 ㎡ kg-1

5. The requirement for chloride content detection is ≤ 0.1%

6. Drying reduction detection requirement ≤ 0.5%

7. The requirement for sulfate content detection is ≤ 0.05%

8. The lead content detection requirement is ≤ 1.0mg/kg

9. Arsenic content detection requirement ≤ 2.0mg/kg

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