salt is dash type of preservative
Answers
Answer:
Explanation:
Salt has been used as a preservative for ages, and works to preserve food in two ways: Salt dries food. Salt draws water out of food and dehydrates it. All living things require water and cannot grow in the absence of it, including the bacteria which can cause food poisoning.
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Answer:
Table salt or sodium chloride is a common preservative because it is non-toxic, inexpensive, and tastes good. However, other types of salt also work to preserve food, including other chlorides, nitrates, and phosphates. Another common preservative that works by affecting osmotic pressure is sugar.
Explanation:
Salt draws water out of cells via the process of osmosis. Essentially, water moves across a cell membrane to try to equalize the salinity or concentration of salt on both sides of the membrane. If you add enough salt, too much water will be removed from a cell for it to stay alive or reproduce.
A high concentration of salt kills organisms that decay food and cause disease. A concentration of 20% salt will kill bacteria. Lower concentrations inhibit microbial growth until you get down to the salinity of the cells, which may have the opposite and undesirable effect of providing ideal growing conditions.
Salt and Fermentation
Some products are preserved using fermentation. Salt may be used to regulate and aid this process. Here, salt dehydrates the growing medium and acts to maintain fluids in the yeast or mold growing environment. Uniodized salt, free from anti-caking agents, is used for this type of preservation.
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