Elementos-traço e sódio em suco de uva: aspectos nutricionais e toxicológicos

Assis, Roberta Amorim de; Küchler, Ivo L.; Miekeley, Norbert; Silveira, Carmem Lúcia P. da

doi:10.1590/s0100-40422008000800006

Cited by 9 publications

(5 citation statements)

References 5 publications

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“…Considering the variables evaluated, PC1 discriminated − values within parentheses represent the correlation coefficients r between the variables and the principal components -pH (-0.994), Rb (-0.988), total polyphenols (-0.986), P (-0.974), titratable acidity (-0.957), ashes (-0.954), color intensity (-0.933), density (-0.932), total sugars (-0.932), tartaric acid (-0.930), OD at 620 nm (-0.926 Whole and sweetened juices were analytically similar because in general they were characterized by higher (PEREIRA et al, 2008); j) the characterization of 20 grape juices according to their mineral and heavy metal contents (ASSIS et al, 2008); and k) characterization of grape juices made in two Brazilian viticultural regions (SANTANA et al, 2008).…”

Section: Resultsmentioning

confidence: 99%

“…Samples of this juice showed high contents of Li and Na and low hue. These minerals might be incorporated to the reprocessed juice during dilution with water and addition of sugar and additives occasionally used (FERREIRA et al, 2002;FERRARI;SOARES, 2003;ASSIS et al, 2008). Indeed, the presence of high Na content is an indicative of the use 132.5 ± 62.6 45.7 ± 11.1 13.2 ± 6.9 5.2 ± 2.7 6.9 ± 3.8°B rix/Titratable acidity 20.8 ± 2.4 21.7 ± 3.7 24.2 ± 0.4 29.7 ± 5.8…”

Section: Methodsmentioning

confidence: 99%

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Analytical characteristics and discrimination of Brazilian commercial grape juice, nectar, and beverage

Rizzon

Miele

2012

Food Sci. Technol

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The production and commercialization of Brazilian grape juice is increasing annually, mainly due to its typicality, quality, and nutritional value. The present research was carried out in view of the great significance of Brazilian grape juice for the grape and wine industry. The purpose of this study, therefore, was to assess its composition as well as the discrimination between grape juice and other beverages. Twenty four samples of whole, sweetened, and reprocessed grape juices, grape nectar, and grape beverage were evaluated. Classical variables were analyzed by means of physicochemical methods; tartaric and malic acids, by HPLC; methanol, by gas chromatography; minerals, by atomic absorption spectrophotometry. These products were discriminated by the Principal Component Analysis (PCA). Results show that whole and sweetened grape juices were discriminated from other grape products because they featured higher values of total soluble solids, tartaric and malic acids, most minerals, phenolic compounds, and K/Na ratio, whereas grape nectar and grape beverage presented higher values of ºBrix/titratable acidity ratio. Reprocessed juice was discriminated due to its higher concentrations of Li and Na and lower hue.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Analytical characteristics and discrimination of Brazilian commercial grape juice, nectar, and beverage

Rizzon

Miele

2012

Food Sci. Technol

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“…Dne of them evaluated Cd, Cr, Ni, and Pb in four grape juices from the State of Rio Grande do Sul (Mirlean et al, 2005) and another one, 20 Brazilian grape juices which analyzed nine trace elements, i.e., As, Cd, Cr, Cu, Na, Ni, Pb, Sb, Zn (Assis et al, 2008).…”

Section: Trace Elementsmentioning

confidence: 99%

Physicochemical composition, minerals, and pesticide residues in organic grape juices

Miele¹,

Rizzon²,

Queiroz³

et al. 2015

Food Sci. Technol (Campinas)

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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.Keywords: organic viticulture; agrobiology; minerals; heavy metals. Practical Application:This survey allows knowing the presence of heavy metals and pesticides in organic grape juice.

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“…As, Cd, Cr, Cu, Ni, Pb, Sb, and Zn, complied with maximum tolerable levels according to the Brazilian legislation. 61 Copper was also determined in tropical juices using two different strategies in atomic absorption spectrometry. 62,63 The first one was based on fast sequential flame atomic absorption spectrometry (FS-FAAS) and the accuracy was improved using indium as internal standard.…”

Section: Foodsmentioning

confidence: 99%

Analytical chemistry in Brazil: healthy and growing

Rocha

Pereira-Filho²,

Nóbrega³

2009

J. Braz. Chem. Soc.

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A química brasileira está crescendo rapidamente, sendo um dos principais alicerces para o contínuo desenvolvimento do país. Inspirados no 15º Encontro Nacional de Química Analítica, ENQA, com um número recorde de participantes e comunicações, decidiu-se revisar os recentes desenvolvimentos em química analítica no Brasil. Foram escolhidas as mesmas áreas de aplicação adotadas para a organização temática do ENQA e selecionados artigos publicados por autores brasileiros em 7 periódicos de ampla penetração na área. Os dois periódicos científicos editados pela Sociedade Brasileira de Química também foram pesquisados. Esta revisão não é exaustiva, porém os trabalhos selecionados após 2008 mostram uma significativa visão geral da área. Pode-se concluir que a química analítica brasileira está saudável, em crescimento e certamente atenderá as demandas do país como uma potência emergida.Chemical sciences in Brazil are growing fast and being one of the main supports for the continuous development of the country. Inspired on the 15 th Brazilian Meeting on Analytical Chemistry, ENQA, with a record number of participants and communications, we have decided to review recent developments in analytical chemistry in Brazil. We have chosen the same application areas used for the thematic organization of the ENQA and have searched papers published by Brazilian authors in 7 major and general journals in analytical chemistry. The two scientific journals published by the Brazilian Chemical Society were also searched. This review is not comprehensive, but the selected papers published after 2008 shown an impressive overview of the area. We may conclude that analytical chemistry is healthy and growing in Brazilian scenario and certainly will attend the demands of Brazil as an emerged power.

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Elementos-traço e sódio em suco de uva: aspectos nutricionais e toxicológicos

Cited by 9 publications

References 5 publications

Analytical characteristics and discrimination of Brazilian commercial grape juice, nectar, and beverage

Analytical characteristics and discrimination of Brazilian commercial grape juice, nectar, and beverage

Physicochemical composition, minerals, and pesticide residues in organic grape juices

Analytical chemistry in Brazil: healthy and growing

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