Effect Of Titanium On The Activity Of Lipoxygenase

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Lipoxygenase was extracted from untreated tomato fruits and those treated with titanium ascorbate (TITAVIT) at the last stage, of ripening. It was found that titanium (Ti) had a activating effect on lipoxygenase so that the development of red pigments was inhibited to some extent. The addition of Titavit to the reaction mixture resulted in a lag period of about 1 minute to 1ipoxygenase-catalyzed linoleic acid oxidation, whereas, incubation of this complex with enzyme extract for 10 minutes significantly increased enzyme activity. Activation of lipoxygenase by Ti was confirmed when addition of titanium chloride also increased the enzyme activity. Titanium also increased the stability of lipoxy-genase preparations when kept under refrigeration.

Original languageEnglish
Pages (from-to)505-516
Number of pages12
JournalJournal of Plant Nutrition
Issue number5
Publication statusPublished - May 1 1988


  • enzyme activity
  • titanium
  • tomato

ASJC Scopus subject areas

  • Physiology
  • Agronomy and Crop Science

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