title: Influence of type of distillation apparatus on chemical profiles of brazilian cachaças.
abstract: Brazilian cachaças (115 samples; 73 samples derived from distillation in copper pot stills, 42 samples derived from distillation in stainless steel columns), collected directly at the producers, were analyzed for the contents of 34 constituents by chromatography, inductively coupled plasma optical emission spectrometry, and atomic absorption spectrometry. The analytical data were subjected to principal component analysis (PCA) and linear discriminant analysis (LDA). The PCA treatment led to discrimination of the two groups of cachaças, explaining 65.0% of the database variance. Using LDA and ethanal, ethyl carbamate, dimethyl sulfide, isobutyl alcohol, n-propanal, copper, ethyl acetate, and phenylmethanal as chemical descriptors, a model was developed that presented 95.1% accuracy in predicting the type of distillation apparatus.
authors.affiliation: Departamento de Química e Física Molecular, Instituto de Química de São Carlos, Universidade de São Paulo (USP), Avenida Trabalhador São-carlense 400, CP 780, CEP 13560-970 São Carlos, SP, Brazil.
authors.forename: Roni Vicente
authors.initials: RV
authors.lastname: Reche
authors.forename: Alexandre Ferreira Leite
authors.initials: AF
authors.lastname: Neto
authors.forename: Alexandre Ataide Da
authors.initials: AA
authors.lastname: Silva
authors.forename: Carlos Alexandre
authors.initials: CA
authors.lastname: Galinaro
authors.forename: Renata Zachi De
authors.initials: RZ
authors.lastname: Osti
authors.forename: Douglas Wagner
authors.initials: DW
authors.lastname: Franco
mesh_terms: D000434:Alcoholic Beverages / Q000032:analysis*; D001938:Brazil; D003300:Copper; D005511:Food Handling / Q000295:instrumentation* / Q000379:methods; D031786:Saccharum / Q000737:chemistry; D012680:Sensitivity and Specificity; D013193:Stainless Steel
chemical_list: D013193:Stainless Steel; D003300:Copper