Using spectrophotometry and spectral mapping technique for the study of the production of manganese-dependent and manganese-independent peroxidases by Pleurotus ostreatus

Helena Morais, Cristina Ramos, Esther Forgács, Tibor Cserháti, José Oliviera

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

The activity of manganese-dependent and manganese-independent peroxidases produced by Pleurotus ostreatus in culture media composed of agro-residues was measured by visible spectrophotometry. The overall enzyme activity and its selectivity were separated by using spectral mapping technique followed by nonlinear mapping. The relationships between the parameters of enzyme production and the composition of culture media and fermentation time was assessed by stepwise regression analysis. Calculations proved that the addition of extract of straw to the culture media significantly decreased the overall production of both enzymes, whereas the selectivity of enzyme production was influenced by amount of potato extract and the concentration of total sugar in the culture media. Enzyme activity depended quadratically on the fermentation time.

Original languageEnglish
Pages (from-to)99-109
Number of pages11
JournalJournal of biochemical and biophysical methods
Volume50
Issue number2-3
DOIs
Publication statusPublished - Jan 4 2002

Keywords

  • Nonlinear mapping
  • Pleurotus ostreatus
  • Spectral mapping

ASJC Scopus subject areas

  • Biophysics
  • Biochemistry

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