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High concentrations of salts and sugars creates a hypertonic environment which draws water out of the microbial cell. This loss of water inhibits cell function and causes the cell to die. The lack of water also prevents microbes from growing, which is why food is preserved.
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What are the conditons of hypotonic?
"Hypotonic" means having a lower osmotic pressure than some reference material. This word is probably most often used in medicine, where the reference osmotic pressure is that of healthy blood.
Is salt often used as a preservative in convenience foods?
In my opinion, salt is one of the LEAST frightening things used to preserve convenience foods. In my experience, salt is used more for taste these days and chemical means are used to preserve.
This mineral is used to add flavor to foods to preserve foods in the production of medicine and in sewage treatment.?
Salt
What is the function of salt?
Salt is sometimes used as a health aid, such as in treatment of dysautonomia. Sodium is one of the primary electrolytes in the body and is indispensable for life because it is important for:- regulation of blood pressure, pH, blood volume, osmotic pressure- transmission of nervous impulse- correct neuron function- it is a preservative for many foods- improve the taste of foods
How did freezing foods begin?
Ice and snow were used to preserve food when they were available
What is crystalloid osmotic pressure?
Colloids: is a term used to collectively refer to the large molecular weight (nominally MW > 30,000) particles present in a solution. In normal plasma, the plasma proteins are the major colloids present. As the colloids are solutes they contribute to the total osmotic pressure of the solution. This component due to the colloids is typically quite a small percent of the total osmotic pressure. It is referred to as COLLOID OSMOTIC PRESSURE (or sometimes as the ONCOTIC PRESSURE).
What is synthetic antioxidant?
It is a fake antioxidant used to preserve fats and oils in packaged foods.
Which type of foods are preserved by sodium benzoate?
It is usually used to preserve meat products such as ham.
What is the definition of equaltonic?
The word equaltonic can be used interchangeably with isotonic. The definition is a solution having the same osmotic pressure as another solution.
Why is saline used in serial dilution?
Because the osmotic pressure of "plain" water can be too much for bacteria, causing them to pop, and throw off your colony counts during your serial dilutions. A buffered saline solution keeps the bacteria at their usual osmotic pressure. Typical saline is 0.85%.
Why is saline used in bacterial serial dilution?
Because the osmotic pressure of "plain" water can be too much for bacteria, causing them to pop, and throw off your colony counts during your serial dilutions. A buffered saline solution keeps the bacteria at their usual osmotic pressure. Typical saline is 0.85%.
Is there more pressure used in Osmosis or reverse Osmosis?
Water or liquid move naturally from lower concentration to higher concentration. The drive force is called osmotic pressure. No additional pressure need to drive osmosis process. Reverse osmosis, is apply pressure to fight against osmotic pressure. It do need additional pressure to reverse the osmosis process. It is comparing a zero additional pressure with any positive additional pressure thus of cause reverse osmosis require more pressure.
