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Articles by Gaspar Ros
Total Records ( 2 ) for Gaspar Ros
  Nabila Berrighi , Louiza Belkacemi , Kaddour Bouderoua , Marina Santaella , Gaspar Ros and Gema Nieto
  Background and Objective: Interest in meat fatty acid composition stems mainly from the need to find ways to produce healthier meat, with a higher ratio of polyunsaturated to saturated fatty acids and a more favorable balance between n-6 and n-3. The purpose through this study is to assess the effect of diet on fatty acids and colour characteristics of lamb meat. Materials and Methods: In this study two separate groups of Rembi breed was used either reared in a highland area and feeding on pasture supplemented with hay or reared in a steppe area and feeding on pasture supplemented with concentrate. The study was carried out from March to June, 2015. After slaughter, samples of the Biceps femoris were removed from each carcass and placed in ice in isothermal boxes to be transported to the laboratory. The dissected muscles were trimmed, minced in a meat grinder and stored at -20°C for further analysis. Results: The results showed more fat in the meat from the steppe group lambs than the highland one (3.80 vs 1.94%, respectively, p<0.05). The polyunsaturated fatty acid (PUFA) levels were higher in meat issued from lambs reared in the steppe than those from the highland region. The n-3 polyunsaturated fatty acid and C18:3 n-3 levels were significantly higher in the tissue from the highland group, but there was no significant difference between the highland and the steppe lamb meat with regards to C18:2 n-6 levels. The C18:2 n-6/C18:3 n-3 and n-6/n-3 ratios could be considered ideal for human health in both groups: 6.55 and 8.04% for highland animals, respectively (p<0.001) and 10.50 and 12.68% for the steppe-bred animals (p<0.001), respectively. Overall, the feeding system played an important role in the colour of the resulting meat and the results point to significant differences in the amounts of colour parameters i.e., redness, luminosity and yellowness. Conclusion: Lamb meat produced on Algerian steppe and highland areas seems to have better sensoriel and nutritional quality, especially in term of fatty acids quality, which linked to the graze diversity and quality present in these lands. Based on these results and from a fattening perspective, grazing is declared to be an economically sustainable husbandry system.
  Tamer M. El-Messery , Marwa M. El-Said , Heba H. Salama , Dina Mostafa Mohammed and Gaspar Ros
  Background and Objective: Mango peel is an excellent source of bioactive compounds especially Phenolic Compounds (PC). Due to the difficulty of adding the mango peel to food products as a solution we evaluated the feasibility of encapsulating a phenolic-rich extract from mango peel (MPPE) then added to milk beverage and the therapeutic effectiveness in protecting against oxidative stress was investigated. Materials and Methods: The characterization of MPPE microcapsules has been conducted by Scanning Electron Microscopy (SEM) and Encapsulation Efficiency (EE). The MPPE microcapsules were added in different proportions to the milk (1, 2 and 3%), physicochemical properties and the viscosity were evaluated during 14 days of cold storage. In vitro simulation digestion process (oral, gastric and intestinal phase) was evaluated for the total phenolic and flavonoid content (TPC and TFC) and antioxidant activity for both Mango Peel Phenolic Extract (MPPE) microcapsules and milk beverage supplemented with MPPE microcapsules. The milk beverage supplemented with microcapsules was investigated against oxidative stress using CCl4 injected rats. Results: The physicochemical properties of the milk beverage supplemented with microcapsule were not significantly affected compared to the control sample. Furthermore, TPC, TFC and antioxidant activity values were increased significantly (2-3 times) at the end of the simulation digestive process for both MPPE microcapsules and milk beverage supplemented with MPPE microcapsules each individually. In vivo experiment, the total antioxidant and catalase levels were increased and the lipid peroxide, Alanine Transaminase (ALT), Aspartate Transaminase (AST) and Alkaline Phosphatase (ALP) activities were decreased when used milk beverage supplemented with MPPE microcapsules. Conclusion: These results demonstrated that MPPE microcapsules rich in bioactive components can be used as a chemo-preventive agent against oxidative stress disorders in experimental rats.
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