Título:	Physicochemical composition, minerals, and pesticide residues in organic grape juices.
Autor:	MIELE, A. RIZZON, L. A. QUEIROZ, S. C. do N. de GIANELLO, C.
Afiliación:	ALBERTO MIELE, CNPUV; SONIA CLAUDIA DO N DE QUEIROZ, CNPMA.
Año:	2015
Referencia:	Food Science and Technology, Campinas, v. 35, n. 1, p. 120-126,jan/mar. 2015.
Descripción:	Demand for organic products is intensified in many countries each year. Following this trend, Brazil produces increasing volumes of organic grape juice. In this way, a survey of organic grape juices made from grapes produced according to this system was carried out where physicochemical composition, minerals, trace elements, and pesticide residues were determined. Variables related to grape juice composition were performed by physicochemical procedures; minerals and trace elements, by inductively plasma optical emission spectrometry; pesticide residues, by liquid chromatography-mass spectrometry. Main results show that the physicochemical composition of organic grape juices was in general in accordance to the Brazilian legislation. The mean concentrations of trace elements were very low, varying from 0.002 (Cd) to 0.970 (Ba) mg L?1. Pesticide residues were not detected in any sample analyzed (MRL= 10 μg L?1). These results show that the Serra Gaúcha viticultural region present conditions to produce organic grape juices, despite the adverse climate factors that occurs in some years. Nevertheless, these products should be made with grape varieties, such as the labrusca ones, less susceptibles to the main grapevine pathogens.
Thesagro:	Viticultura
NAL Thesaurus:	Minerals Heavy metals
Palabras clave:	Metais pesados Viticultura Orgânica Agrobiologia Minerais Agrobiology Organic viticulture
ISSN:	0101-2061
DOI:	http://dx.doi.org/10.1590/1678-457X.6540
Tipo de Material:	Artigo de periódico
Acceso:	openAccess
Aparece en las colecciones:	Artigo em periódico indexado (CNPUV)