The spectroscopic examination of pomegranate‐seed oil

Abstract

A detailed quantitative study of the ultra‐violet and the infra‐red spectra of pomegranate‐seed oil has been made. The ultra‐violet data confirm the presence of a conjugated triene system for which the infra‐red measurements suggest a cis‐cis‐trans‐orientation as the most likely configuration.

Application of infrared spectrophotometry to fatty acid derivatives

“…Punieic acid is a cis, trans-isomer of alphaand beta-eleostearic acids, not identical with either. We have already seen that Ahlers et al (7) later showed it to have a cis, cis, trans-configuration. The cis, trans-configurations of alphaand beta-eleostearie acids were investigated independently by Bickford, DuP%, Mack, and O'Connor (20).…”

“…They reported absorptivities of these 10 compounds at 10.36 microns in CS2 solution. Ahlers and MeTaggart (7) describe an interesting application of infrared spectra. Using the rules developed for the position of the trans bond when conjugated with either cis or trans bonds, they showed that punicic acid in pomegranate seed oil is cis-cis, trans without even isolating the acid from the oil.…”