Degree of Unsaturation :
The degree of unsaturation formula takes the number of carbon atoms (C), number of nitrogen atoms (N), number of halogen atoms
(X), and the number of hydrogen atoms (H) as input values. These values can be easily obtained from the molecular formula of the compound. For how to calculate the degree of unsaturation, the formula is given as:
Du = (2c +2+N -x -H )/2
2. Susceptibility to oxidative rancidity :
The availability or presence of oxygen, increased temperatures, the impact of light and the presence of pro-oxidants speed up autoxidation (oxidative rancidity) over a period of time.
3. Status of oxidative rancidity
One common method is the peroxide value test, which measures the amount of peroxides (indicators of rancidity) in the product. Another method is the p-anisidine test, which measures the level of aldehydes (another indicator of rancidity) in the product.
4.Average molecular weight
Osmometry is applied to determine number average of molecular weight (Mn).
5. Status regarding hydrolytic rancidity
Peroxide Value (PV)
p-Anisidine (p-AV)
TBA Rancidity (TBAR)
Free Fatty Acids (FFA)
Oxidative Stability Index (OSI)