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Method for detecting restricted substances in food contact material

A technology for food contact materials and food simulants, which is applied in the field of food analysis, can solve problems such as unfavorable food contact material safety supervision, no detection method is proposed, and achieve good economic and social benefits, high accuracy, and simple pretreatment effects.

Active Publication Date: 2012-07-25
GUANGZHOU QUALITY SUPERVISION & TESTING INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These technical documents present starting materials and additives (2,6-dimethylphenol, diethylene glycol butyl ether, 4-isopropylphenol, 4-tert-butylphenol, 2, 6-di-tert-butyl-4-methylphenol, dimethyl isophthalate, diallyl phthalate, trimethylolpropane-trimethacrylate, 4,4-dichlorodiphenyl Sulfone, 2,2'-methylene-bis-(4-methyl-6-tert-butyl-phenol), 2,2'-methylene-bis-(4-ethyl-6-tert-butyl -phenol)), and stipulate its specific migration limit value (SML or SML(T) of each compound is (mg / l): 0.05, 0.75, 0.05, 0.05, 3.0, 0.05, 0.01, 0.05, 0.05, 1.5, 1.5), but they did not propose relevant detection methods, which is not conducive to the safety supervision of food contact materials

Method used

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  • Method for detecting restricted substances in food contact material
  • Method for detecting restricted substances in food contact material
  • Method for detecting restricted substances in food contact material

Examples

Experimental program
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Effect test

Embodiment 1

[0024] The present invention will be described in detail below in conjunction with specific embodiments. Determination of 11 kinds of restricted substances in 4 kinds of food simulants obtained in embodiment 1 tinplate three-piece can

[0025] Include the following steps:

[0026] (1) Preparation of standard solution

[0027] Weigh 2,6-di-tert-butyl-4-methylphenol, 2,2'-methylene-bis-(4-methyl-6-tert-butyl-phenol), 2,2'-methylene Each 500mg of methyl-bis-(4-ethyl-6-tert-butyl-phenol) was placed in a 25ml volumetric flask, and the volume was adjusted to the mark with methanol, and the concentration of the three compounds was prepared as a single-label reserve of 20mg / ml respectively. liquid.

[0028] Weigh 50 mg of the remaining eight compounds into 25 ml volumetric flasks, adjust the volume to the mark with methanol, and prepare single-label stock solutions with concentrations of each compound of 2 mg / ml.

[0029] Pipette a certain volume of single-standard stock solution ...

Embodiment 2

[0046] Embodiment 2 has added the determination of the food simulants of 11 kinds of restricted substance standard solutions

[0047] Include the following steps:

[0048] (1) Preparation of standard solution

[0049] With embodiment 1.

[0050] (2) Preparation of the test solution

[0051] Pipette 50 μl of the standard solution into 16 10ml colorimetric tubes, and use the four food simulants obtained in Example 1 to make up to the mark, and each food simulant to make up to 4 colorimetric tubes. Food simulants added with restricted substances were obtained, and the number of parallel samples was 4. Cover. Put the tinplate three-piece can in a constant temperature box, keep the temperature at 40°C for 240 hours, take out the tinplate three-piece can, pour the food simulant in it into a clean glass reagent bottle, and store the reagent bottle at 4°C.

[0052] Each food simulant is prepared into a test solution, and the preparation method is the same as in Example 1.

[005...

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PUM

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Abstract

The invention discloses a method for detecting restricted substances in a food contact material, comprising the following steps of: preparing a sample solution and carrying out gas chromatography / mass spectrometry on the sample solution. The method adopts a conventional chromatographic analyzer of the gas chromatography / mass spectrometry to detect the contents of 11 restricted substances in the food contact material, the pre-treatment is simple, the detection limit is low and the accuracy is high, so that the method is very suitable for detecting a plurality of the restricted substances in the food contact material in batches; the detection method disclosed by the invention fills up the blank of the existing method for detecting the contents of a plurality of the restricted substances in the food contact material, so as to provide an important technology support for controlling the food quality and safely monitoring foods; and the method has good economic and social benefits.

Description

technical field [0001] The invention relates to the field of food analysis, in particular to a method for detecting restricted substances in food contact materials. Background technique [0002] The quality and safety of food packaging is one of the important factors affecting food safety, and it is also a key technical requirement for international trade in the food packaging industry. Metal cans covered with inner coating are widely used in the packaging of various beverages and cans because of their lightness, low price, good sealing performance and high mechanical strength. my country currently consumes more than 50 billion metal cans for packaging food and beverages annually, and has become a major producer and consumer of metal cans for food packaging. [0003] my country's safety and health standards for food contact coatings include "GB 9686-88 Hygienic Standards for Polyamide Epoxy Coatings on the Inner Wall of Food Containers", "GB 9685-2008 Hygienic Standards for...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/02
Inventor 罗海英侯向昶陈立伟冼燕萍吴玉銮何国山陈意光王斌
Owner GUANGZHOU QUALITY SUPERVISION & TESTING INST
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