Food preservation is a science, and the technological content of cling film is gradually increasing. At present, German researchers are developing plastic wraps that are not only capable of antifouling but also anti-irradiation and anti-oxidation functions. In the future, this cling film is expected to signal if it is damaged or the storage environment is too hot.
According to reports, experts at the Fraunhofer Processing Technology and Packaging Research Institute in Freising, Germany, recently designed a new type of cling film. This cling film contains a "scavenger-indicator system" that not only captures oxygen that is detrimental to food preservation, but also signals "high oxygen content in the package" through discoloration. When the temperature of the storage environment rises, the signal substances in the cling film are activated, and the excellent spots are revealed to let people know that the food has experienced an excessive temperature during transportation.
Another advantage of this cling film is that the use of food additives such as antioxidants can be reduced. Thomas Wanna, the director of the research project, said that the plastic wrap that is currently under development has been able to prevent the oxidation of orange juice in glass or plastic containers. The researchers hope that this new result will be used for the preservation of more kinds of food in the future.
LANXESS, of Leverkusen, Germany, has also developed a cling film that prevents food oxidation. This is a polyamide film that incorporates a silicate layer that is only 1 nanometer thick during production. The silicate layer that it contains can greatly extend the process of oxygen molecules through the cling film. When the air humidity reaches about 50%, the thickness of the cling film will automatically increase to twice the original thickness. In addition, in order to withstand light irradiation, this can also be achieved by dyeing new cling film.
According to reports, experts at the Fraunhofer Processing Technology and Packaging Research Institute in Freising, Germany, recently designed a new type of cling film. This cling film contains a "scavenger-indicator system" that not only captures oxygen that is detrimental to food preservation, but also signals "high oxygen content in the package" through discoloration. When the temperature of the storage environment rises, the signal substances in the cling film are activated, and the excellent spots are revealed to let people know that the food has experienced an excessive temperature during transportation.
Another advantage of this cling film is that the use of food additives such as antioxidants can be reduced. Thomas Wanna, the director of the research project, said that the plastic wrap that is currently under development has been able to prevent the oxidation of orange juice in glass or plastic containers. The researchers hope that this new result will be used for the preservation of more kinds of food in the future.
LANXESS, of Leverkusen, Germany, has also developed a cling film that prevents food oxidation. This is a polyamide film that incorporates a silicate layer that is only 1 nanometer thick during production. The silicate layer that it contains can greatly extend the process of oxygen molecules through the cling film. When the air humidity reaches about 50%, the thickness of the cling film will automatically increase to twice the original thickness. In addition, in order to withstand light irradiation, this can also be achieved by dyeing new cling film.
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