02126naa a2200361 a 450000100080000000500110000800800410001902400560006010000190011624501310013526000090026652010270027565000190130265000110132165000140133265000080134665300230135465300200137765300350139765300240143265300310145665300380148765300370152565300100156265300210157265300160159370000240160970000190163370000200165270000250167270000230169777300440172021268702020-11-26       2020    bl uuuu     u00u1 u    #d7 ahttps://doi.org/10.1016/j.foodchem.2019.1260602DOI1 aLIMA, C. M. de  aDigital image-based tracing of geographic origin, winemaker, and grape type forred wine authentication.h[electronic resource]  c2020  aThis work proposes the development of a simple, fast, and inexpensive methodology based on color histograms (obtained from digital images), and supervised pattern recognition techniques to classify redwines produced in the São Francisco Valley (SFV) region to trace geographic origin, winemaker, and grape variety. PCA-LDA coupled with HSI histograms correctly differentiated all of the SFV samples from the other geographic regions in the testset; SPA-LDA selecting just 10 variables in the Gray scale+HSI histogram achieved 100% accuracy in the test set when classifying three different SFV winemakers. Regarding the three grape varieties, SPA-LDA selected 15 variables in the RGB histogram to obtain the best result, misclassifying only 2 samples in the tests et. Pairwise grape variety classification was also performed with only 1 misclassification. Besides following the principles of Green Chemistry, the proposed methodology is a suitable analytical tool; for tracing origins, grapetype, and even (SFV) winemakers  aDigital images  aGrapes  aRed wines  aUva  aCabernet Sauvignon  aColor histogram  aGeographical origin indication  aHistograma de cores  aImagens digitais Algoritmo  aIndicação de origem geográfica  aSuccessive projections algorithm  aSyrah  aTouriga Nacional  aVinho tinto1 aFERNANDES, D. D. S.1 aPEREIRA, G. E.1 aGOMES, A. de A.1 aARAÚJO, M. C. U. de1 aDINIZ, P. H. G. D.  tFood Chemistrygv. 312, p. 12606, 2020.