Study of jojoba oil aging by FTIR.
As the jojoba oil was used in cosmetic, pharmaceutical, dietetic food, animal feeding, lubrication, polishing and bio-diesel fields, it was important to study its aging at high temperature by oxidative process. In this work a FT-MIR methodology was developed for monitoring accelerate oxidative degradation of jojoba oils. Principal component analysis (PCA) was used to differentiate various samples according to their origin and obtaining process, and to differentiate oxidative conditions applied on oils. Two spectroscopic indices were calculated to report simply the oxidation phenomenon. Results were confirmed and deepened by multivariate curve resolution-alternative least square method (MCR-ALS). It allowed identifying chemical species produced or degraded during the thermal treatment according to a SIMPLISMA pretreatment.
Le Dréau
Y
Y
CNRS UMR6263, ISM(2), équipe AD(2)EM, groupe Systèmes Chimiques Complexes, Case 451, Université Paul Cézanne, Avenue Escadrille Normandie Niemen, 13397 Marseille Cedex 20, France.
Dupuy
N
N
Gaydou
V
V
Joachim
J
J
Kister
J
J
D006358:Hot Temperature; D016018:Least-Squares Analysis; D015999:Multivariate Analysis; D010084:Oxidation-Reduction; D025341:Principal Component Analysis; D012984:Software; D017550:Spectroscopy, Fourier Transform Infrared / Q000379:methods*; D013997:Time Factors; D014885:Waxes / Q000737:chemistry*
D014885:Waxes; C034743:jojoba wax