Food packaging, the simpler the better

A bottle of mineral water in the car within just two days became a "jug bottle." In the hot summer months, not only the food itself is preserved, but also various kinds of packaging, such as bags and bottles for storing food, are also very “sensitive” to temperature. The “Weekly Quality Lecture Hall” co-sponsored by the Yangzi Evening News and the Jiangsu Provincial Bureau of Quality Supervision, invited the engineer of the National Food Packaging Product Testing Center Xiang Bin to invite us to talk about our knowledge about food packaging. . Yangzi Evening News reporter Xue Ling sparked into a bottle of mineral water bottle

In the hot summer months, many owners are accustomed to buying whole boxes of mineral water in the trunk for timely drinking. However, the recent personal encounter with a car owner in Fujian made many people realize that this seemingly usual habit may have hidden risks. Not long ago, the owner of the vehicle in Fujian issued a Weibo report saying that he had put a bottle of mineral water in his car. After two days of high-temperature exposure, not only did the mineral water be as hot as boiling water, but even the bottle was transformed into a “gourd.” This "microblogging with pictures and truths" has immediately attracted the attention and forwarding of many netizens. Netizens are even more concerned with: Can such mineral water still drink?

Drink bottles should not be used repeatedly. “Whether it is mineral water bottles or other beverage bottles, PET is generally used as the material.” When accepting an interview with the Yangzi Evening News, Xiang Bin said that mineral water bottles and beverage bottles made of PET are not high-temperature resistant. Generally, when the temperature reaches 70°C, it will be deformed, and it will be in a high temperature state for a long time. Some of the processing aids will overflow. The extent to which these substances will affect health will be affected. Although there is no professional research data yet, Still need to remind the owner of the friend, in the hot summer is best not to mineral water, drinks, etc. for a long time in the car.

In addition, consumers need to be reminded that some consumers tend to use beverage bottles as temporary cups for convenience. To Bin, they say that any product has its own method of use. For design purposes, beverage bottles are disposable products. Consumers should not use it repeatedly.

The normal use of plastic packaging is very safe. No matter if it is a plastic bottle or a variety of plastic bags, in fact, many people have been unsure about plastic food packaging. Some people even think that plastic is "toxic." According to an interview with the Yangzi Evening News reporter, the concern for plastic food packaging may come from PVC. Due to the volatile plasticizer, soft PVC film has been eliminated and no longer used in food packaging.

Xiang Bin said that currently common food packaging materials, including polyethylene (PE), polypropylene (PP), polyester (PET or PETP), etc., such as household plastic wrap film materials are generally used PE, PP with high transparency PET, which is often used for making plastic boxes, has good transparency and high surface gloss is the most suitable plastic bottle instead of glass bottles. Plastic bottles and plastic bags made from these raw materials are being used in the packaging of various foods in our lives. It is safe for consumers as long as they are properly used according to the correct methods.

The “fancy” packaging is not a good reminder that although the raw materials used to make food packaging are safe, it does not mean that all food packaging is qualified. From the point of view of previous sampling inspections, unqualified food packaging will involve some safety indicators in addition to its own quality issues. Many food packaging bags are printed with colorful exquisite designs. The more exquisite, the more ink they use and the more benzene they contain. If the benzene residue exceeds the standard, it will have an impact on human health. Suggest to consumers that when shopping for food, don't forget to look at the packaging, the simpler the packaging, the better. Identifying the plastic packaging of food can also "see the nose smell", in addition to see if the packaging and color is normal, you can also smell whether there is odor, if any, it is best not to buy foods using such packaging.

Vacuum packaged inflatable packaging Seeing object vacuum packaging is not unfamiliar to consumers, but the Yangzi Evening News reporter found in the interview that some foods now use inflatable packaging that is in contrast to vacuum packaging. These two packaging methods are superior What? Xiang Bin said that the principle of vacuum packaging is to exclude oxygen, reduce or avoid fat oxidation, and inhibit the proliferation of mold and other aerobic microorganisms; and the method used for inflatable packaging is to use a vacuum pump to extract the air in the container, and then import the inert The gas is immediately sealed and the food filled with inert gas can properly prevent oxidation of the oil.

In Xiang Bin’s view, although vacuum packaging and inflated packaging look diametrically opposite, the goal is the same: to extend the shelf life of foods. From this point of view, there is no difference between the two packaging methods. This kind of packaging method mainly depends on the product itself. For example, in order to prevent cracking, the pastry cannot be vacuum-packed, and the vacuum packaging of meat products is still preferred.