Food preservation entails protecting against the growth of bacteria, fungi (such as yeasts), or other micro-organisms (although some techniques function by introducing benign germs or fungi to the food), as well as reducing the oxidation of fats that create rancidity. Food preservation could additionally include procedures that prevent visual degeneration, such as the chemical browning reaction in apples after they are reduced during food preparation.
Many processes created to preserve food will certainly include a number of food preservation approaches. Maintaining fruit by transforming it right into jam, as an example, involves steaming , sugaring and also sealing within a closed container . Some traditional methods of maintaining food have been shown to have a reduced energy input and carbon footprint, when as compared to contemporary approaches.
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