Evaluation of Phytosterols in Milk and Yogurts Used as Functional Foods in Portu

• Author(s): Saraiva, David ; Castilho, M. Conceição ; Martins, M. Rosário ; Noronha da Silveira, M. Irene ; Ramos, Fernando
• Date: 2011
• Persistent ID: http://hdl.handle.net/10174/3845
• Origin: Repositório Científico da Universidade de Évora
• Subject(s): Plant Sterols; Plant Stanols; Cholesterol; Milk; Yogurt; GC-MS
• Document Type: Article
• Language: Portuguese
• Editor(s): Rodríguez-Lázaro, David

Description

The early development of cardiovascular diseases, one of the major death causes in Europe, is clearly associated with high plasmatic cholesterol levels. However, it is demonstrated that the ingestion of phytosterols enriched milk and yogurts could reduce cholesterolemia. The purpose of the present work was to assess the commercially available phytosterols-enriched milk and yogurts. As such, the available three milk and seven yogurt presentations in Portuguese market were collected during 2008 and analyzed through gas chromatography coupled with mass detection. All the analyzed milk samples were in agreement with the proportion established by the European Commission, with β-sitosterol as the more abundant phytosterol. However, and contrarily to milk, the different yogurt manufacturers had different options in the phytosterols added to the dairy foods commercialized.