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Bioactive Low Molecular Weight Compounds in Two Traditional Spanish Products

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Author(s): María Luisa Timón | Emilio José Galea | Ana Isabel Andrés | María Jesús Petrón

Journal: Food and Nutrition Sciences
ISSN 2157-944X

Volume: 04;
Issue: 09;
Start page: 14;
Date: 2013;
Original page

Keywords: Bioactive Compound | Proteolysis | Traditional Food | Antioxidant Activity | Antihypertensive Activity

ABSTRACT
The aim of this work focuses on the study of low molecular weight (LMW) compounds with antioxidant and antihy-pertensive effect in Iberian ham and La Serena cheese, two traditional products in Spain, in comparison to cured ham and matured Ewe’s milk cheese. Proteolysis parameters were studied, LMW compounds were isolated and their antioxidant and antihypertensive activity was analyzed. Results showed that a more intense proteolysis, expressed as peptidic nitrogen (PN), in Iberian ham (p < 0.001), can cause higher antioxidant activity in this product for both DPPH radical scavenging (p < 0.001) and metal chelating effect (p < 0.001). However, a more intense proteolysis in La Serena cheese, expressed as non protein nitrogen (NPN) (p < 0.001) and PN (p < 0.001), did not promote higher antioxidant activity in this cheese. On the other hand, no differences were found for antihypertensive activity, expressed as angiotensin I-converting enzyme (ACE) inhibitory activity, in both type of hams or cheese.
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