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Prototype Instruments for Laboratory and On-line Measurement of Lipoxygenase Activity

  • Autores: J.R. Powers, J.I. Reyes De Corcuera, R.P. Cavalieri
  • Localización: Food science and technology international = Ciencia y tecnología de alimentos internacional, ISSN-e 1532-1738, ISSN 1082-0132, Vol. 9, Nº 1, 2003, págs. 5-9
  • Idioma: inglés
  • Títulos paralelos:
    • Instrumentos prototipo para la medición de laboratorio y en línea de la actividad de lipoxigenasa
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  • Resumen
    • A laboratory bench-top and a continuous prototype for measurement of lipoxygenase activity was developed. Lipoxygenase activity determination was based on the measurement of the rate of oxygen consumption by the enzyme using a polarographic sensor for the bench-top prototype and fibre optic sensors for the continuous prototype. The bench-top and the continuous sensors were compared against the standard spectrophotometric method. The range of LOX activity according to the spectrophotometric assay was from O to 0.163 ymol/Ls. Accuracy and precision were 0.009 and 0.005 ymol/L s respectively for the bench top prototype and 0.007 and 0.006 ymol/L s for the on-line prototype. Correlation coefficients (R2) were 0.99 for both prototypes with respect to the spectrophotometric method. (A)


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