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There are numerous methods of food preservation, mainly depending on the purpose. Traditional food preservation techniques include curing, drying, refrigeration, freezing, smoking, pickling, canning, bottling and jellying. Industrial techniques include pasteurization, vacuum packing, Irradiation, Artificial food preservatives and bio-preservation.
The 2 methods of food preservation is refrigeration and canning
Smoking, salting, canning/bottling, drying, freezing, pickling
Food preservation involves preventing bacteria growth using methods that include freezing. Canning, pickling, dry salting, fermenting, and drying are other methods of preservation used for food items.
by packed in air tight container. away from light. fiushed in nitrogen gas &packed them in container
Some methods of food preservation are acidic, like pickling foods and chemicals like benzoic acid are used to keep food fresh.
Methods of preserving food include smoking and drying. Canning is another common method of food preservation. Pickling is one of the oldest forms of food preservation.
For detailed instructions on canning and pickling and recipes refer to the National Center for Home Food Preservation (NCHFP) website, it is an excellent source for current research-based recommendations for most methods of home food preservation.
Some modern methods for food preservation include refrigeration, freezing, canning, vacuum packaging, irradiation, and high-pressure processing. These methods help extend the shelf life of food products by slowing down microbial growth, enzyme activity, and oxidation.
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The USDA no longer approves of the use or alum of picking lime in the preparation of pickles. Refer to the National Center for Home Food Preservation (NCHFP) website, it is an excellent source for current research-based recommendations for most methods of home food preservation and includes many tested recipes.