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F. Boucher, M. van der Rest and G. Gingras, “Structure and Function of Carotenoids in the Photoreaction Center from Rhodospirillum Rubrum,” Biochimica et Biophysica Acta (BBA)—Bioenergetics, Vol. 461, No. 3, 1977, pp. 339-357.

has been cited by the following article:

• TITLE: Effect of Aging in the Structure of Silica Xerogels with Incorporation of Extract’s Leaves

  AUTHORS: José R. Martínez, Erika Espericueta, Gerardo Ortega-Zarzosa

  KEYWORDS: Fluorescence Spectra; Sol-Gel; Chlorophyll; Extract Leaves; Photosystem II

  JOURNAL NAME: New Journal of Glass and Ceramics, Vol.1 No.1, March 28, 2011

  ABSTRACT: The spectral fluorescence characteristics of extracts leaves embedded in silica xerogel matrix promoted by aged time was studied. We obtain a higher PSII stability for extract of leaves embedded in xerogel matrix, with concentration of 8 g / 20 ml and water to TEOS molar ratio of 11, which remain bioactive over a very long period of time, whereas for a water to TEOS molar ratio of 5 a blue-shift fluorescence is observed indicating the PSII denaturizing and formation of fluorescing aggregates associated with the activation of carotenoids radicals.