Screening analysis of unknown seed oils

Abstract

In the present paper, modern tools for the screening analysis of unknown seed oils have been reviewed. The known plant fatty acid structures have been divided into three groups (usual, unusual nonoxygenated, unusual oxygenated fatty acids) and examples for each class are presented. Moreover, the importance of chemotaxonomy for the screening analysis of some lipid components is discussed. The main part of the work is focussed on various aspects of preliminary seed oil analyses for the detection of unusual fatty acids and lipid classes and the analysis of fatty acid derivatives by gas chromatography and gas chromatography/mass spectrometry. Furthermore, some useful methods to obtain rapid information on the configuration of double bonds are cited. The paper concludes with a scheme for the detection of unusual fatty acids and lipid classes in seed oils.

Identification of Cyclopropyl Fatty Acids in Walnut (Juglans Regia L.) Oil

“…Typical members incorporating these structure types are palmitic, stearic, palmitoleic, oleic, linoleic, and linolenic acid. Although they are best known as components of seed oils, CPFA do occur in vegetative plant parts [6][7][8][9][10] . CPFA have been the subject of many investigations due to their carcinogenic 11,12 , cocarcinogenic [13][14][15] and other biological, medical and mitogenic eff ects on animals [16][17][18] .…”

The influence of plant protection by effective microorganisms on the content of bioactive phytochemicals in apples

“…This solution was used for HPLC analysis of lipid classes. The purity of eluted fractions was confirmed by TLC (silica gel TLC 60 F254, 0.25 mm; Merck) using a hexane/diethyl ether/acetic acid (80:20:2, v/v/v) as a mobile phase …”

Chemical transformations of renewable lubricant feedstocks

“…Nature offers an abundance of unusual FAs in plant oils with various functionalities in the FA chain, like acetylenic, allenic, conjugated, epoxide, keto, hydroxy, furanoid, fl uoro, cyclopropene and cyclopentenyl FAs [334]. Other unusual FAs are short-and long-chain length triglycerides.…”