Tropical wines are a new concept of vitiviniculture that is being developped principally in Brazil

GOMES NETO, H.

GUERRA, C. C.

HALLWASS, F.

PEREIRA, G. E.

SILVA, J. B. P. da

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MetaboHê profiles of Brazilian tropical wines determined by 'nNMRspectroscopy and chemometricsHumberto Gomes Neto"; João Bosco Paraíso da Silva'; Femando Hallwass ': Giuliano EliasPereira'; Celito Crivellaro Guerra2'Departamento de Química Fundamental, Centro de Ciências Exatas e da Natureza, Universidade Federalde Pernambuco, Av. Luiz Freire s/n, CEP 50. 750-540, Recife-Pii, Brazil. Esmail: hallwass@u(pe.brlBrazilian Agriculture Research Corporation - Embrapa Grape & Wine/Tropical Semi-Arid, BR 428, km152, CP 23, CEP 56.302-970, Petrolina-PE, Brazil. E-maU: gpereira@cpatsa.embrapa.br.Tropical wines are a new concept of vitiviniculture that is being developped principally in Brazil.This new Brazilian frontier is located at Northeast region in Pemambuco State, closed to theEquator line (between 8-9° latitude of the south hemisphere). Comparing these conditions withother Brazilian and worldwide vineyards, grapes present different characteristics, producing typicalwines called "wines of sun", presenting differences between them according to the month ofproduction. In this region it is possible to harvest grapes all months in the year, and one vineproduces two-three harest by year, depending of the cycle of each cultivar, and grapevines areirrigated by drip. This characteristic is due to the singularity of the hot climate and soils of thisregion, being the second great producer region of fine wines of Brazil, after Rio Grande do Sul(South of Brazil). The region presents a climate with intra-annual variability, an annual averagetemperature of 26.4°C (21.0°C for minimum and 31.7°C for maximum temperatures), and it islocated at 350 m above of sea level, in a tlat landscape, with 500 mm of normal rainfall. The aim ofthis work is a preliminary study of Northeast Brazilian experimental wines, determining theirschemical compounds and then metabolic profiles by IH' NMR spectroscopy, associated tochemometric methods, to discriminate wine samples. IH NMR spectroscopy allows one to quantify,in a single analysis, the major sugars, organic and amino acids, alcohols and phenolic compounds ofgrapes and wines, allowing to obtain metabolic profiles in a complex mixrure. Wine differenceswere found according to cultivars and vintages, and groups of samples were created, due todifferent chemical compositions.- 92 -

Metabolic profiles of Brazilian tropical wines determined by H NMR spectroscopy and chemometrics.

http://www.alice.cnptia.embrapa.br/bitstream/doc/544076/1/114942009P.92.pdf

Metabolic profiles of Brazilian tropical wines determined by H NMR spectroscopy and chemometrics.

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