Evaluation of the potential of FTIR and chemometrics for separation between defective and non-defective coffees

► FTIR potential for discrimination of defective and non-defective coffees is shown. ► Defective beans consisted of: black, light sour, dark sour and immature. ► Separation of non-defective coffees based on transmission spectra derivatives. ► Separation of non-defective coffees based on reflectance spectra (DRIFTS). ► Two groups separated by ATR: non-defective/light sour and black/immature/dark sour.