1H NMR adulteration study of hempseed oil with full chemometric approach on large variable data (CROSBI ID 258490)
Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Jović, Ozren ; Pičuljan, Katarina ; Hrenar, Tomica ; Smolić, Tomislav ; Primožič, Ines
engleski
1H NMR adulteration study of hempseed oil with full chemometric approach on large variable data
Adulteration of hempseed (H) oil, a well known health beneficial nutrient, is studied in this work by means of 1H NMR spectroscopy. H oil samples were mixed with cheap and widely used oils such as rapeseed (R) oil and sezame (Se) and sunflower (Su) oil. Many samples of different geographic origins were taken into account. Binary mixture sets of hempseed oil with these three oils (HR, HSe and HSu) were considered. 1H NMR spectra of pure oils and their mixtures were recorded and quantitative analyses were performed using Partial Least Squares Regression (PLS), First-Break Forward Interval PLS methods (FB-FiPLS) and Interval Ridge Regression (iRR). The obtained results show that each particular oil can be very successfully quantified (RMSEP 1.4-3.0%), and that NMR coupled with iRR has a great potential in studying signals of low intensity belonging to oil microconstituents. This means that 1H NMR spectroscopy coupled with multivariate methods can rapidly and effectively determine both the fatty acid profile and the level of adulteration in the adulterated hempseed oil for these studied and frequently used adulterant oils.
1H NMR ; Regression ; Hempseed oil ; Adulteration
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Podaci o izdanju
185
2019.
41-46
objavljeno
0169-7439
1873-3239
10.1016/j.chemolab.2018.12.012