examples. (h) What is lodine Number? Distinguish Essential oils from Fatty or Vegetable oils with examples.
Answers
Answer:
The iodine value is a measure of the relative degree of unsaturation in oil components, as determined by the uptake of halogen. Because the melting point and oxidative stability are related to the degree of unsaturation, IV provides an estimation of these quality factors. The greater the iodine value, the more unsaturation and the higher the susceptibility to oxidation. Peanut oil (IV 82–107) is more saturated than corn (IV 103–128), cottonseed (IV 99–113), or linseed (IV 155–205) oils; however, it is considerably less saturated than coconut (IV 7.7–10.5), palm (IV 44–54) or butter (IV 25–42) oils.
Fumiyoshi Ishii, Tomoko Nii, in Colloid and Interface Science in Pharmaceutical Research and Development, 2014
22.2.1.1 Materials
PEL (iodine value, IV = 75), hydrogenated PEL with two different iodine values (i.e., R-20 [IV = 20], and R-5 [IV = 2]) were kindly provided by Asahi Chemical Industries Co., Ltd. (Tokyo, Japan). The compositions of acyl hydrocarbon chains for these lecithins are shown in Table 22.1 [13]. Dichloromethane, chloroform, and benzene used for the lipid solvents, as well as methanol and ethanol were all of the highest grade. Calcein as an entrapment marker was purchased from Wako Pure Chemical Industries (Osaka, Japan) and was purified according to the method of Iritani et al. [14].