Structural characterization by Nuclear Magnetic Resonance of ozonized triolein
| Autor: | Maritza F. Díaz, José A. Gavín, Jailson B. de Andrade |
|---|---|
| Jazyk: | English<br />Spanish; Castilian |
| Rok vydání: | 2008 |
| Předmět: | |
| Zdroj: | Grasas y Aceites, Vol 59, Iss 3, Pp 274-281 (2008) |
| Druh dokumentu: | article |
| ISSN: | 0017-3495 1988-4214 |
| DOI: | 10.3989/gya.2008.v59.i3.519 |
| Popis: | In the present study ozonized triolein with 739 mmolequiv/ kg peroxide index is characterized by NMR.The triolein and ozonized triolein show very similar 1H NMR spectra except for the resonances at δ 9.74 ppm, which correspond to aldehydic protons and δ 5.14 ppm (ozonides methylic protons). Other new signal assignments are based on the connectivities provided by the proton scalar coupling constants δ 2.41 ppm (methylenic group allylic to aldehydic protons and ozonides methynic protons) and δ 1.67 ppm (methylenic protons in position with respect to ozonides methylic protons). From the 13C and 1H-13C spectrum of the ozonized triolein, the presence of ozonides was confirmed by the signals δ 104.2 and 104.3 ppm, respectively. Other new signals in δ 43.9 ppm confirm the presence of methylenic carbon ozonides. From the structural elucidation of ozonated triglycerides, relevant chemical information about ozonated vegetable oil can be found . |
| Databáze: | Directory of Open Access Journals |
| Externí odkaz: |
|