Food material can be preserved at

Answer: dSolution: Food presservation and spoilage of food involve the factors that control the growth of micrpprganisms. These methods of preservation are used today.
1. Osmotic pressure - the addition of salts of a solution resulting in increase of osomtic pressure and can be used to preserve food. the high salt or sugar concentration draw water of any microbial cell out thus prevent their growth.
2. Low-temperature- Pathogenic bacteria with a few exception will not grow at low temperature (near about $0^{\circ }C$).
3. Pasteurization - It is heating of food at high temperature i.e., the microorganisms eliminated from the food.