REFERENCES
- Assad , E. D. , E. E. Sano , S. A. R. Cunha , T. B. S. Correa , and H. R. Rodrigues . 2002 . Identificação de impurezas e misturas em pó de café por meio de comportamento espectral e análise de imagens digitais . Pesquisa Agropecuária Brasileira. 37 : 211 – 216 .
- Bylejo , M. , M. Rantalainen , O. CloarecJ , K. Nicholson , E. Holmes , and J. Trygg . 2006 . O PLS discriminant analysis: combining the strengths of PLS-DA and SIMCA classification . J. Chemom. 20 : 341 – 351 .
- Chevallier , S. , D. Bertrand , A. Kohler , and P. Courcoux . 2006 . Application of PLS-DA in multivariate image analysis . J. Chemom. 20 : 221 – 229 .
- De Maria , C. A. B. , L. C. Trugo , R. F. A. Moreira , and C. C. Werneck . 1994 . Composition of green coffee fraction and their contribution to the volatile profile formed during roasting . Food Chem. 50 : 141 – 145 .
- Díez , I. E. , J. M. G. Saiz , and C. Pizarro . 2004 . Prediction of roasting colour and other quality parameters of roasted coffee samples by near infrared spectroscopy. A feasibility study . J. Near Infrared Spectrosc. 12 : 287 – 297 .
- Farah , A. , M. C. Monteiro , V. Calado , A. S. Franca , and L. C Trugo . 2006 . Correlation between cup quality and chemical attributes of Brazilian coffee . Food Chem. 98 : 373 – 380 .
- Flaten , G. R. , B. Grung , and O. M. Kvalheim . 2004 . A method for validation of reference sets in SIMCA modeling . Chemom. Intell. Lab. Systems. 72 : 55 – 66 .
- Franca , A. S. , J. C. F. Mendonca , and S. D. Oliveira . 2005. Composition of green and roasted coffees of different cup qualities. LWT–Food Sci. Technol. 38: 709–715.
- Morgano , M. A. , C. G. de Faria , M. F. Ferrao , and M. M. C. Ferreira . 2007 . Determination of total sugar in raw coffee using near infrared spectroscopy and PLS regression . Quim. Nova. 30 : 346 – 350 .
- Naes , T. , T. Isaksson , T. Fearn , and T. Davies . 2002 . A User-Friendly Guide to Multivariate Calibration and Classification . Chichester , UK : J. Wiley and Sons .
- Pizarro , C. , I. Esteban-Díez , and J. M. González-Sáiz . 2007 . Mixture resolution according to the percentage of robusta variety in order to detect adulteration in roasted coffee by near infrared spectroscopy . Anal. Chim. Acta. 585 : 266 – 276 .
- Wang , J. J. , F. Wang , and L. Ma . 2006 . The quality assessment of cigarette paper by SIMCA and PLS combined with near infrared spectrum . Spectrosc. Spect. Anal. 26 : 1858 – 1862 .