Fried foods or fried snacks are so tasty. But if you eat them too much, you may feel itchy a bit at your throat and sometimes cough occur. Itchy throat is actually caused by acrolein, a compound formed by the heating temperature exceeds the point of cooking oil fumes.
Good cooking oil has a high smoke point. The higher the smoke point is, the better the quality of cooking oil will be. However, when cooking oil is used repeatedly, the acrolein is formed. Frying temperature generally has a smoke point of 177-121 degrees Celsius. A good cooking oil’ smoke points should have no less than 215 degrees Celsius. If you fry the food and its temperatures above the smoke point then there will change a change in the oil of the unsaturated fatty acids to saturated fatty acids which will increase cholesterol in the blood.
The smoke that comes out of used cooking oil when you are frying is a sign of the smoke point is exceeded. Smoke point at which oil has been used for frying will decrease due to hydrolysis of the oil molecules. That’s why used cooking oil should not be used repeatedly. A maximum of three times used the same cooking oil when frying and after that you had better discarded the cooking oil.
