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- Title
Analysis of total and dialyzable copper levels in duplicate meals by ETAAS: daily intake.
- Authors
Carlos Velasco-Reynold; Miguel Navarro-Alarcon; Herminia López-Ga de la Serrana; Vidal Perez-Valero; María Lopez-Martinez
- Abstract
Abstract The determination of total and dialyzable copper levels of 108 hospital meals by the duplicate diet sampling method was performed. The analysis of Cu levels was done by an electro thermal atomic absorption spectrometry (ETAAS) method developed. The criteria for the validation of the method [sample recoveries, repeatability, limit of detection, sensibility and analyses of the standard reference materials (BCR CRM 063R and CRM 185R)] demonstrated its reliability and accuracy. The total Cu supply by meals is directly and significantly (P P P P = 0.001). The mean Cu daily dietary intake (DDI) found was 941.5 μg/day. The method of duplicate diet sampling and analysis of Cu facilitates the most accurate and reliable results and considers the influence of technological and cooking processes. The Cu DDIs reported indicate that probably no problems in relation to Cu nutrition could be observed in usual consumers of these meals (users and staff of the hospital).
- Subjects
COPPER; ABSORPTION; PHYSICAL &; theoretical chemistry; CHEMISTRY
- Publication
European Food Research & Technology, 2008, Vol 227, Issue 2, p367
- ISSN
1438-2377
- Publication type
Article
- DOI
10.1007/s00217-007-0730-9