Trace elements and sodium in grape juice: nutritional and toxicological aspects

Química Nova

Universidade Federal Fluminense, Niterói, Brasil¹  Miekeley, Norbert¹  Universidade Católica do Rio de Janeiro, Rio de Janeiro, Brasil¹  Küchler, Ivo Lewin¹  Silveira, Carmem Lúcia Porto da¹  Assis, Roberta Amorim de¹ 

关键词: arsenic;    sodium;    grape juice.;   

DOI  :  10.1590/S0100-40422008000800006

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

Eight trace elements were determined in 20 Brazilian brands of grape juice, distributed over the country. Highest measured concentrations (As: 0.016; Cd: 0.010; Cr: 0.060; Cu: 1.28; Ni: 0.032; Pb: 0.016; Sb: 0.0040 and Zn: 1.44 mg L-1) comply with Brazilian maximal tolerance levels for inorganic contaminants (As: 0.5; Cd: 0.5; Cr: 0.1; Cu: 30; Ni: 3; Pb: 0.4; Sb: 1 and Zn: 25 mg L-1). Determination of arsenic species has shown inorganic As(V) as predominant in most samples. Sodium concentrations, nowadays a major public health concern, were also measured, showing an average of 149 mg L-1. Analytical results for this element were much higher than label concentrations, showing the need for better quality control.

【 授权许可】

Unknown