Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.18/2728
Título: Development of an orange juice in-house reference material and its application to guarantee the quality of vitamin C determination in fruits, juices and fruit pulps
Autor: Valente, A.
Sanches-Silva, A.
Albuquerque, T.G.
Costa, H.S.
Palavras-chave: Composição dos Alimentos
Nutrição Aplicada
Ascorbic Acid
Vitamin C
Reference Material
Quality Control
Validation
Data: 1-Jul-2014
Editora: Elsevier
Citação: Food Chem. 2014 Jul 1;154:71-7. doi: 10.1016/j.foodchem.2013.12.053
Resumo: Reference materials are useful for the quality control of analytical procedures and to evaluate the performance of laboratories. There are few and expensive certified reference materials commercially available for vitamin C or ascorbic acid analysis in food matrices. In this study, the preparation and the suitability assessment of an orange juice in-house reference material (RM) for vitamin C analysis in fruits, juices and in fruit pulps is described. This RM was used for the development and full validation of an HPLC method. The results showed excellent linearity (r2 = 0.9995), good accuracy (96.6–97.3%) and precision, as relative standard deviation, ranged from 0.70% to 3.67%. The in-house RM was homogenous and stable at storage conditions (−80 °C) during 12 months. According to our results, this in-house RM is an excellent tool to use in quality control and method verification purposes for vitamin C analysis of fruits, juices and fruit pulps matrices. Furthermore, a stabilization solution with perchloric and metaphosphoric acids was developed which prevents degradation of ascorbic acid for a period of 12 months at −80 °C.
Peer review: yes
URI: http://hdl.handle.net/10400.18/2728
DOI: 10.1016/j.foodchem.2013.12.053
ISSN: 0308-8146
Versão do Editor: hhttp://www.sciencedirect.com/science/article/pii/S0308814613019195
Aparece nas colecções:DAN - Artigos em revistas internacionais

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