New version of the standard released! Determination of Total Migration (GB 31604.8-2021) Standard

Recently, the China Food Safety Standards and Monitoring and Evaluation Department issued Announcement No. 8 of 2021, approving the release of 17 national food safety standards and 1 Announcement of Amendment Order.

GB 31604.8-2021 "National Food Safety Standard   Determination of Total Migration of Food Contact Materials and Products" will be officially implemented from March 7, 2022, all replacing GB 31604.8-2016.

The GB 31604.8-2021 standard is suitable for the determination of the total migration of food contact materials and products in water-based food simulants, chemical substitute solvents, and olive oil, and can meet the testing requirements of the total migration index in the GB 4806 series of product standards. Next, Xiaobei will take you to interpret the specific information.

1. Determination of total migration in water-based food simulants and chemical alternative solvents

Hotspot: Changes compared with GB 31604.8-2016

Scope of application:

It is clearly applicable to various water-based food simulants and chemical substitute solvents specified in GB 31604.1-2015, so that the standard users can accurately understand the scope of application of the standard.

Reagents and Materials

1. The requirements of the evaporating dish expand the range of materials and specifications, and improve the operability of the standard.

2. The wiping paper clearly uses dust-free wiping paper to prevent the residual paper fibers during wiping from affecting the test results

G analysis steps

1. The framework is adjusted, the relevant requirements of the migration test are merged, and the blank test is independent into a clause to ensure the coordination with other GB 31604 series standards.

2. When weighing the evaporating dish, the requirement of constant weight is added to ensure the stability and repeatability of the test results.

3. Refine the temperature requirements of the water bath to ensure the accuracy of the test results.

4. For the test of chloroform extract, the applicable sample types are specified by the relevant product standards to ensure the compatibility with the product standards. The specific operation method of repeated extraction is clarified, and the standard operability is improved.

Presentation of analysis results

1. The frame adjustment, the calculation of the total migration amount, is based on the unit of the detection result, which is convenient to use.

2. In the calculation of the total migration amount, the expression of the results in mg/piece applicable to seals has been added to improve the compatibility with the GB 5009.156-2016 standard; the correction of the results applicable to the substitution test has been added to improve the compatibility with the GB 5009.156-2016 standard. 31604.1-2015 Standard Unification.

Precision

The precision requirements are divided into two sections according to the size of the test results to set different requirements to improve the rationality of the standard.

Hotspot When the method standard is used, BCTC friendly reminder

1. The migration test temperature and time for the total migration in the substitution test are determined by GB 31604.1, and cannot be carried out in full accordance with the migration test conditions of vegetable oil. Please continue to pay attention to the revision of relevant standards.

2. 95% (volume fraction) ethanol solution can be used as a water-based food simulant or as a chemical substitute solvent. The preparation method of this solution is not listed in 3.2 Reagent preparation of this standard, because the preparation method of this solution is not listed in the GB 5009.156-2016 standard, and 95% ethanol on the market can be directly purchased and used. Regardless of its identity, the method of Part I is applicable to the determination of total migration in this solution

2. Determination of total migration in olive oil

Hotspot Standard main content

Scope of application

This standard applies to the determination of the total migration of food contact materials and products in olive oil, and applies to all total migration test temperatures specified in Table 6 of GB 31604.1-2015. The material of food contact materials is suitable for plastics, coatings, paper products, composite materials materials, etc.

Detection principle

Determination of the total migration amount of food contact materials and products in olive oil, take the sample as the test object, and determine the total amount of non-volatile substances in the mass lost before and after the migration test. The moisture content of the sample and the content of volatile substances have an impact on the test results. Therefore, the determination of the total migration should strictly follow the test process.

Hotspot When the method standard is used, BCTC friendly reminder

1. This standard has special provisions on the migration test conditions of reusable products. Special attention should be paid before testing, and it is necessary to confirm whether the sample is a reusable product.

2. For samples with a large amount of olive oil adsorption, ether can be used for multiple extractions until the olive oil is completely extracted, or the adsorbed olive oil can be extracted by the dissolution/precipitation method.

3. Due to the limitations of detection technology, the method is not suitable for the following samples:

*When determining suitability, the amount of substances that interfere with the accurate quantification of olive oil exceeds 2 mg/dm2

*Unable to obtain accurate mass moisture sensitive samples

*Sample with selective adsorption of olive oil components

Contents of this announcement:

GB 29921-2021 National Food Safety Standard Limited Pathogens in Prepackaged Food

GB 31607-2021 National Food Safety Standard Limited Pathogens in Bulk Ready-to-eat Food

GB 19295-2021 National Food Safety Standard Frozen Noodles and Prepared Foods

GB 1886.349-2021 National Food Safety Standard Food Additives Five-carbon diacetal (also known as glutaraldehyde)

GB 1886.350-2021 National Food Safety Standard Food Additives Nitrogen Oxide

GB 1886.351-2021 National Food Safety Standard Food Additives α-cyclodextrin

GB 1886.352-2021 National Food Safety Standard Food Additives β-cyclodextrin

GB 1886.353-2021 National Food Safety Standard Food Additives γ-cyclodextrin

GB 1886.354-2021 National Food Safety Standard Food Additives 3-[(4-Amino-2,2-dioxo-1H-2,1,3-benzothiadiazin-5-yl)oxy]-2,2- Dimethyl-N-propylpropionamide

GB 1903.52-2021 National Food Safety Standard Food Nutrition Enhancer Heme Chloride

GB 1903.53-2021 National Food Safety Standard Food Nutrition Enhancer D-Calcium Pantothenate

GB 1903.54-2021 National Food Safety Standard Food Nutrition Enhancer choline bitartrate

GB 5009.17-2021 National Food Safety Standard Determination of Total Mercury and Organic Mercury in Food

GB 5009.265-2021 National Food Safety Standard Determination of Polycyclic Aromatic Hydrocarbons in Food

GB 5009.283-2021 National Food Safety Standard Determination of Azocarboxamide in Food

GB 5009.284-2021 National Food Safety Standard Determination of vanillin, methyl vanillin, ethyl vanillin and coumarin in food

GB 31604.8-2021 National Food Safety Standard Determination of Total Migration of Food Contact Materials and Products

      GB 24154-2015  "National Food Safety Standard - General Principles of Sports Nutrition Food" No. 1 Amendment Sheet
(The above standard text can be found on the National Food Safety Standard Data Retrieval Platform (https://sppt.cfsa .net.cn:8086/db) Check and download.)

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