Use of FTIR spectroscopy and chemometrics for the classification of carobs origin

摘要: Carob samples from seven different Mediterranean countries (Cyprus, Greece, Italy, Spain, Turkey, Jordan and Palestine) were analyzed using Fourier Transform Infrared (FTIR) spectroscopy. Seed flesh of indigenous foreign cultivars, both authentic commercial, examined. The spectra recorded in transmittance mode KBr pellets. data compressed further processed statistically multivariate chemometric techniques, including Principal Component Analysis (PCA), Cluster (CA), Partial Least Squares (PLS) Orthogonal Square-Discriminant (OPLS-DA). Specifically, unsupervised PCA framed the importance variety carobs, while supervised analysis highlighted contribution geographical origin. Best classification models achieved with PLS regression on first derivative spectra, giving an overall correct classification. Thus, applied methodology enabled differentiation carobs seed per their Our results appear to suggest that this method is a rapid powerful tool for successful discrimination origin type.