Catalytic oxidation of concentrated orange oil phase by synthetic metallic complexes biomimetic to MMO enzyme
| Autor: | Marcos L. Corazza, Débora de Oliveira, Ilizandra Aparecida Fernandes, Helen Treichel, Caren D. Frizzo, J. Vladimir Oliveira, Elton Franceschi, Maria Carolina Esmelindro |
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| Rok vydání: | 2010 |
| Předmět: |
Hot Temperature
Methane monooxygenase Orange oil Inorganic chemistry Catalysis Gas Chromatography-Mass Spectrometry Chemical kinetics chemistry.chemical_compound Biomimetic Materials Coordination Complexes Valencene Metalloproteins Nootkatone Plant Oils Hydrogen peroxide Polycyclic Sesquiterpenes Nutrition and Dietetics biology Osmolar Concentration Hydrogen Peroxide Oxidants Kinetics chemistry Catalytic oxidation Oxygenases biology.protein Oxidation-Reduction Sesquiterpenes Agronomy and Crop Science Food Science Biotechnology |
| Zdroj: | Journal of the Science of Food and Agriculture. 90:1460-1466 |
| ISSN: | 1097-0010 0022-5142 |
| DOI: | 10.1002/jsfa.3964 |
| Popis: | BACKGROUND: This paper reports the catalytic oxidation of the concentrated orange oil phase using the complexes [FeIII(BMPP)Cl(µ-O)FeIIICl3], [CuII(BTMEA)2Cl]Cl and [CoII(BMPP)]Cl2 biomimetic to methane monooxygenase enzyme as catalysts and hydrogen peroxide as oxidant. RESULTS: The reaction products of oil oxidation, mainly nootkatone, were identified by gas chromatography/mass spectrometry. A screening of catalysts was performed through a full 23 experimental design, varying the temperature from 30 to 70 °C, the catalyst concentration from 7.0 × 10−4 to 1.5 × 10−3 mol L−1 and the oxidant/substrate molar ratio from 1:1 to 3:1. The results of reaction kinetics employing the most promising catalysts showed that conversions to nootkatone of up to 8% were achieved after 16 h at 70 °C. CONCLUSION: The results obtained in this study in terms of nootkatone production should be considered encouraging, since a real, industrially collected, raw material, instead of pure valencene, was employed in the reaction experiments, with a final content about ten times that present in the original concentrated oil. Copyright © 2010 Society of Chemical Industry |
| Databáze: | OpenAIRE |
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