Packaging materials or plasticizers contain food instant noodles bear the brunt of

Recently, an associate professor of South China Agricultural University published a paper saying that due to the dissolution of plasticizers in packaging, instant noodles and instant rice flour have different degrees of plasticizer contamination. The "First Financial Daily" learned that, in addition to the above two products, including the packaging of meat, rice and other products, it may also dissolve plasticizers under specific conditions, affecting the quality of food.

"Plasticizer", also known as "plasticizer", can increase the plasticity and flexibility of the product. It is the largest auxiliary agent for production and consumption. Demand for plasticizers in China is mainly concentrated in Jiangsu, Zhejiang, Fujian, and Guangdong. Common plasticizers include di(2-ethylhexyl) phthalate (DEHP) and dibutyl phthalate (DBP). ), butyl benzyl phthalate (BBP), di-n-octyl phthalate (DNOP), and the like.

In October last year, Liu Chunhong, an associate professor at South China Agricultural University, and his colleagues randomly sample instant noodles and rice noodles with different brands and tastes from large supermarkets in Guangzhou. Laboratory test results showed that the detection rates of DBP and DEHP were more than half.

An expert from the Shanghai Food Research Institute told the reporter that if plasticizers are used as instant noodles packaging materials, due to the special properties of plasticizers, it is indeed easy to attract grease products such as noodles, and some plasticizers will Migration occurred and entered the food.

The staff of the Guangzhou Quality Supervision, Inspection and Research Institute have written that the plasticizer DEHP is also widely used in polyvinyl chloride (hereinafter referred to as “PVC”) products. The above-mentioned researchers pointed out in the article that DEHP is an internal environment interfering substance and affects the normal function of the secretory system. If it accumulates to a certain extent, DEHP will induce cancer. Experiments have found that PVC gaskets should avoid contact with fatty foods, and thinner PVC gaskets have a higher dissolution rate.

China's relevant food standards clearly stipulate that PVC cap gaskets are not accessible to oils and fats, but can be used for soft drinks, beer, rice wine, and distilled spirits. However, there are still a large number of manufacturers with oils and fats on the market that are using PVC cap gaskets in violation.

A futures practitioner with considerable research in the chemical industry pointed out that there is no need for manufacturers to add DEHP to foods because there is no benefit to them after they are added. DEHP can be detected in foods, which is related to the interior of some food and beverage caps (to prevent leakage of beverages). This cushion, some manufacturers use the form of PVC + plasticizer, which causes the plasticizer to penetrate into the beverage, causing excessive standards, this phenomenon is common in the industry.

Another expert study found that if long-term use of cling film storage rice, plastic film migration may also occur within the plastic wrap. In addition, if the food-grade PVC film wrapped in pork is exposed to high temperatures of 90 degrees Celsius and the package time is too long, the plasticizer in the PVC will penetrate into the pork.

The content of plasticizers (phthalate ester compounds) in food plastic packaging materials in China is also clearly defined: the detection limit of each phthalate ester compound is 0.05 mg/kg.

A chemical analyst who declined to be named pointed out that although there are many studies in China related to the migration of plasticizers to foods, the determination of plasticizers in food packaging, etc., but for plasticizers and other chemicals The study on the migration of products in real foods is still not enough.