Sansa-ard, CAryusuk,KLilitchan, SSupathra LilitchanKrisnangkura, Kสุภัทรา ลิลิตชาญ2011-02-102011-08-262017-06-272011-02-102011-08-262017-06-272011-02-102011Chromatography Research International. 2011, ID 252543https://repository.li.mahidol.ac.th/handle/123456789/2317The ease of separation by gas chromatography between petroselinic and oleic acids depends on the alcoholmoieties of their esters. The esters of higher molecular weight alcohols tend to be better separated on a 90%-biscyanopropyl-10%-cyanopropylphenyl polysiloxane capillary column (30m? 0.25mmi.d.). By analysis of free energies contribution fromdifferent parts of themolecules, it is tentatively concluded that the interaction between the double bond and the column stationary phase is interfered by the bulky alkyl group, and it is the major driving force for the separation of the two fatty acids.729845 bytesapplication/pdfengMahidol UniversityPetroselinateOleate EstersOpen Access articleArticle