Partial Characterization of Soluble Peroxidase in Pericarp of Litchi Fruit
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This work was supported by a grant from the Ministry of Technology and Science (2001BA501A09).

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    Abstract:

    Soluble peroxidase in pericarp of litchi (Litchi chinensis sonn. Cv. Heiye) fruit was extracted by phosphate buffer and purified by ammonium sulfate precipitation, ion exchange chromatography using DEAE Sephadex A-50 column, and gel filtration using Sephadex G-100 column. The specific activity of the purified enzyme increased 65.70 fold over the crude extract with 45.66% recovery. The effects of pH and temperature on activity of peroxidase(POD) were assayed. The Km for H2O2 and 4-methylcatechol were determined by Lineweaver-Burk plots. Several compounds including phonelic compounds were used as the substrates of the enzyme for specificity study. The effects of various inhibitors on this peroxidsae were also assayed.

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GONG Qin-Qin, TIAN Shi-Ping. Partial Characterization of Soluble Peroxidase in Pericarp of Litchi Fruit[J]. Progress in Biochemistry and Biophysics,2002,29(6):891-896

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  • Received:June 04,2002
  • Revised:August 01,2002
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