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One is microbes. The use of waste newspapers and newspapers to package food can detect more than 100,000 bacteria per gram of paper, and some contain a variety of germs, viruses and parasite eggs.
The second is heavy metals and pesticides. Paperboard made of waste paper is used as food boxes, and most of them can detect heavy metals such as lead and arsenic, benzene, and organic phosphorus.
The third is fluorescent. Fluorescent whitening agents and yellow waxes for industrial use have greatly increased the residues of harmful substances such as polycyclic aromatic hydrocarbons in food packaging paper.
Fourth, sulfides. The use of non-desulphurized white cellophane packaging candy, can contain a strong nerve poison in the candy - carbon disulfide.
In order to prevent the contamination of foodstuffs by packaging paper (boxes), the following points should be followed:
First, do not use recycled old newspapers and book-packaged foods, and do not use paperboards made of waste paper as raw materials, and do not use foods that are packaged directly at the entrance.
Second, care wax packaging paper should use food grade paraffin, can not use industrial grade paraffin to replace.
Third, printing color graphics on food packaging paper, to control the chemical composition of ink, as far as possible to achieve low toxicity or non-toxic; packaging foods should be printed with color graphics on the one side facing outward.
To ensure that paper packaging does not cause food contamination, it is not only a problem that packaging paper products manufacturers should pay attention to, but also a problem that food production companies need to strictly check.
Packaging and Food
Food packaging paper (box) is in direct contact with food. If it is not clean or contains harmful substances, it will cause food contamination and directly affect people's health. In general, there are currently four major types of contamination of foods in packaging paper (boxes):