Some Types Of Food Preservation

Food preservation starts the minute meat is carved off slaughtered animals, fish is caught or vegetables/fruits dug or picked. Ways of preserving food depend on the origin of the food in particular. That means, whether they are of plant or animal origin. Postharvest handling of food from plant origin must consider the following: humidity, gas composition as well as temperature. The packing, storage and transport system must be given careful thought. After all, if the transport system results in damage to food while on transit or if there are leaks in the containers, food will likely be spoiled and worthless.There are a number of physical treatments that have proven popular in preserving raw food. These include curing, precooling, temperature treatments along with cleaning and waxing. Chemical treatments, on the other hand, are usually disinfection, fumigation and yes, dipping.For meat, postharvest quality is dependent on slaughter conditions. The quality of the food is certain to be affected if the animal in question was already dying or dead before it was slaughtered.Preservation methods vary for fish. These include chilling followed by electrical stimulation. Hot water rising which could be done with or without chlorination or with phosphate, hydrogen peroxide and chlorine dioxide falls under the many ways of decontamination for fish meat. Ozone, done with surface treatment by organic acids, is among the most well-known practices in preservation.There are pretreatments. A number of these processes include blanching, sulfating along with other physical and chemical pretreatments before major preservation methods are used. All these are done in an aim to allow food to maintain freshness, texture and taste for longer periods of time. Improving shelf life is also another goal.Cleaning, along with sanitization, is recognized as a very important step in preserving food. Microorganisms are killed through the use of many chemical disinfectants, though results vary depending on the brand or type used. Some disinfectants prove very effective when used in direct-contact washes while there are others that must only be used in processing water along with processing equipment or containers.On the use of fumigants for food preservation, while these are not really preservatives, their usage allows for greater control over damage caused by insects. One of the most well known types of fumigants commonly used by food preservationists is methyl bromide. However, this fumigant has the potential to bring harm to the ozone layer, which is why most preservationists are appealing to companies and manufacturers to phase it out.
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