International Research Journals

International Research Journal of Plant Science

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Kiran Mangaonkar

Department of Chemistry, G. N. Khalsa College, Matunga, Mumbai, 400019, India


  • Research Article   
    Spectrophotometric analysis of enzymatic profile of Carica papaya pectinesterase
    Author(s): Sneha Pednekar* and Kiran Mangaonkar

    Pectinesterase (PE) activity can be determined by several methods. Some determine the changes in the substrate (titration of the carboxyl groups, recording pH changes, colour change of pH indicator, gelation & viscosity and manometric assay), others measure the methanol liberated (colour reactions & titrations, gas chromatography and use of radioisotopes). Previous kinetics studies on the PE from Carica papaya have mostly used the titration method described. However, the present research attempts to assess the enzyme properties of papaya PE using a spectrophotometric method. PE isolated from papaya was investigated to determine its optimum pH and temperature. Optimum pH and temperature were estimated to be 7.4 and 75?C, respectively. Kinetic parameters of the enzyme (Km and Vmax values) were evaluated by both titrimetric and spectrophotometric methods. The Km value of 3.06 mg/.. View More»
    DOI: http:/

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