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Oxygen scavengers or oxygen absorbers are added to enclosed packaging to help remove or decrease the level of oxygen in the package. They are used to help maintain product safety and extend shelf life. [1] There are many types of oxygen absorbers available to cover a wide array of applications. [2] [3]
Oxygen scavengers may also be used to reduce browning due to lipid oxidation by halting the auto-oxidative chemical process. Besides, MAP changes the gaseous atmosphere by incorporating different compositions of gases. The modification process generally lowers the amount of oxygen (O 2) in the headspace of the package.
Oxygen scavengers or oxygen absorbers help remove oxygen from a closed package. Oxygen causes acceleration of product degradation and oxidation of e.g. vitamins and fats by stimulating microbial activity. [7] As a result, poor taste, bad odor, discoloration and nutrient degradation may be the consequences.
The intent of vacuum packing is usually to remove oxygen from the container to extend the shelf life of foods and, with flexible package forms, to reduce the volume of the contents and package. [ 2 ] Vacuum packing reduces atmospheric oxygen, limiting the growth of aerobic bacteria or fungi , and preventing the evaporation of volatile components.
Specialized packaging is needed to regain and even extend that shelf life. Packaging includes tray, [4] absorbent pad (meat diaper), specialty plastic films, [5] etc. Oxygen scavengers and modified atmosphere packaging are used to keep the products visually appealing and consumer safe. [6] [7]
Modified atmosphere/modified humidity (MA/MH) packaging is a technology used to preserve the quality of fresh produce so that it can be sold to markets far away from where it is grown, extend the marketing period, and to help suppliers reduce food waste within the cold chain. Commercial examples of MA/MH include sea freight of Galia and ...
A hermetic seal is any type of sealing that makes a given object airtight (preventing the passage of air, oxygen, or other gases). The term originally applied to airtight glass containers but, as technology advanced, it applied to a larger category of materials, including metals, rubber, and plastics. Hermetic seals are essential to the correct ...
A packaging gas is used to pack sensitive materials such as food into a modified atmosphere environment. The gas used is usually inert , or of a nature that protects the integrity of the packaged goods, inhibiting unwanted chemical reactions such as food spoilage or oxidation .
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