Browsing by Author "Ortiz, R."

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    ART-RISK 3.0 a fuzzy-based platform that combine GIS and expert assessments for conservation strategies in cultural heritage
    (2022) Moreno, M.; Ortiz, R.; Cagigas-Muniz, D.; Becerra, J.; Martin, J. M.; Prieto, A. J.; Garrido-Vizuete, M. A.; Macias-Bernal, J. M.; Chavez, M. J.; Ortiz, P.
    Heritage preservation poses numerous difficulties, especially in emergency situations or during budget cuts. In these contexts, having tools that facilitate efficient and rapid management of hazards-vulnerabilities is a priority for the preventive conservation and triage of cultural assets.
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    Blood biochemical indicators in young and adult Cebus apella of both sexes
    (BLACKWELL PUBLISHING, 2008) Nunez, H.; Araya, M.; Cisternas, F.; Arredondo, M.; Mendez, M.; Pizarro, F.; Ortiz, A.; Ortiz, R.; Olivares, M.
    Background A frequent drawback in physiology of non-human primates is that normal values for a variety of indicators (haematological, biochemical and others) are scant.
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    USE OF THE ORAC-PYROGALLOL RED/ORAC-FLUORESCEIN RATIO TO ASSESS THE QUALITY OF ANTIOXIDANTS IN CHILEAN WINES
    (SOC CHILENA QUIMICA, 2011) Lopez Alarcon, C.; Ortiz, R.; Benavides, J.; Mura, E.; Lissi, E.
    We have recently proposed that ORAC (Oxygen Radical Absorbance Capacity) methods employing fluorescein (ORAC-FL) and pyrogallol red (ORAC-PGR) as target molecules could be considered as complementary indexes. In particular, the ratio ORAC-PGR/ORAC-FL would reflect the average quality of the antioxidants present in a particular sample. In the present work, we evaluated the antioxidant capacity and the total phenol content of twelve Chilean wines (red, rose, and white) employing ORAC and Folin-Ciocalteau methods, respectively. Red wines showed higher Folin and ORAC values than rose and white wines. However, the ORAC-PGR/ORAC-FL ratio of all tested wines was close to 0.5. The results show that it is important to consider both, the phenol content of the sample (measured by ORAC-FL or Folin indexes) and their average reactivity (measured by the ORAC-PGR/ORAC-FL ratio). Both factors are considered relevant in the evaluation of the antioxidant capacity of wines.