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

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

• Hoá học
• Ceratonia siliqua L
• Carob pods
• Carob seeds
• FTIR spectroscopy
• The classification of carobs origin
• Cytotoxic activity
• Antimicrobial activity
• Shrimp lethality bioassay
• Pseudomonas aeroginosa
• Carbon mineralization
• Microbial activity
• Humidity conditions
• Field capacity
• Mineralization of carob
• Turkish Journal of Agriculture and Forestry
• Tạp chí Nông Lâm nghiệp
• Amplified fragment length polymorphism
• Bayesian cluster analysis
• Principal component analysis
• Croatian carob tree