Photoinhibition and chlorophyll photobleaching in immobilized thylakoid membranes

Robert Carpentier, Roger M. Leblanc, Murielle Mimeault

Research output: Contribution to journalArticlepeer-review

22 Scopus citations


Thylakoid membranes can be immobilized to enhance their stability in photoelectrochemical cells exposed to strong continuous illumination. This paper studies the effect of such immobilization in a glutaraldehyde-albumin crosslinked matrix on the rates of photoinhibition of electron transfer and chlorophyll photobleaching. The immobilization matrix constituted an efficient oxygen diffusion barrier that prevents chlorophyll photobleaching to a great extent. The photoprotection was less efficient against photoinhibition as seen by monitoring oxygen evolution after given periods of preillumination in the cell of a photoacoustic spectrophotometer. The results also indicated that light dispersion by the immobilization matrix was not a critical factor for photoprotection.

Original languageEnglish (US)
Pages (from-to)489-493
Number of pages5
JournalEnzyme and Microbial Technology
Issue number8
StatePublished - Aug 1987
Externally publishedYes


  • Immobilization
  • chloroplast membranes
  • electron transfer
  • photoacoustic spectroscopy
  • photobleaching
  • photoinhibition

ASJC Scopus subject areas

  • Biotechnology
  • Bioengineering
  • Biochemistry
  • Applied Microbiology and Biotechnology


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