Method for detecting acrylonitrile transfer volume in edible plastic product containing free fat on surface
A technology of acrylonitrile and migration, which is applied in the direction of measuring devices, material separation, and analysis of materials, etc. It can solve problems such as short use time, low use temperature, product function discount, etc., and reduce the loss of enterprises. The method is simple and easy, Wide range of effects
Inactive Publication Date: 2015-01-28
TAIZHOU ENTRY EXIT INSPECTION & QUARANTINE BUREAU PEOPLES REPUBLIC OF CHINA
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Problems solved by technology
However, while these various plastic products bring convenience to our lives, they also bring corresponding safety problems: toxic and harmful substances will migrate to food and affect human health, such as bisphenol A, plasticizers, etc.
Unless the scope of application is greatly limited, such as the storage of various types of food is limited to only dry items, or a very low use temperature and a short use time are specified, which greatly reduces the function of the product and is also Will greatly affect sales prospects
Method used
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Embodiment 1
[0024] Choose olive oil as the food simulant, put the food simulant into the acrylonitrile container products that have passed the uniformity test before soaking, the soaking temperature is from room temperature 20°C, 40°C-100°C, of which 40°C-100°C is 5 ℃, select the soaking time from 1-24h, every 1h, take 5g of soaked simulant, put it in a 20mL headspace glass bottle, add 40uL of propylene carbonate solution, cover and seal it, put it on the instrument Shake in a constant temperature bath at 70°C±1°C for 2 hours to make it reach a gas-liquid equilibrium state, then use a sampling needle to extract 1mL of gas, inject it into the instrument for analysis, use a nitrogen and phosphorus detector to collect signals, and calculate the sample by comparison The migration of acrylonitrile in the simulant, after many tests, based on the obtained data of soaking temperature, soaking time and corresponding migration of acrylonitrile, a three-dimensional migration model was established t...
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The invention provides a method for detecting an acrylonitrile transfer volume in an edible plastic product containing free fat on surface. The method comprises the following steps of: finding soaking temperature and soaking time related transfer laws of the acrylonitrile transfer volume under the simulant through a series of transfer experiments with olive oil as a food simulant, establishing a transfer fitting equation, and calculating the most appropriate soaking temperature and soaking time corresponding to the acrylonitrile transfer volumes of other products conforming to the requirements of EU (European Union) laws according to the equation. According to unqualified detection results, the service conditions under qualified detection results can be conveniently and rapidly derived and then the loss of enterprises can be decreased as far as possible in the shortest time; and by labeling appropriate limit identifiers, the product is not only capable of satisfying the requirements of the laws, but also capable of keeping the functions to the greatest extent, so that the application of the product is not influenced. The method provided by the invention is simple and easy and has strong operability and wide application range.
Description
technical field [0001] The invention belongs to the field of detection of harmful substances in food-contact materials and articles, and in particular relates to a method for detecting migration of acrylonitrile in food-use plastics containing free fat on the surface. Background technique [0002] In the modern food production and distribution system, food contact materials play an extremely important role. They can be called the "coat" of food and are closely related to our daily life. Especially plastic products of food contact materials are loved by consumers because of their light weight, beautiful appearance, low cost, insulation, drop resistance, and corrosion resistance. But while these various plastic products bring convenience to our life, they also bring corresponding safety problems: toxic and harmful substances will migrate to food and affect human health, such as bisphenol A, plasticizers and so on. [0003] Acrylonitrile copolymer plastic products are very com...
Claims
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IPC IPC(8): G01N30/02
Inventor 陈彤刘艇飞王建玲孙春燕何军肖晓峰
Owner TAIZHOU ENTRY EXIT INSPECTION & QUARANTINE BUREAU PEOPLES REPUBLIC OF CHINA