Results 221 to 230 of about 136,864 (264)
Some of the next articles are maybe not open access.
Current Opinion in Plant Biology, 2006
Since the 1970s, researchers have proposed several regulatory pathways governing chlorophyll metabolism, but only recently have the underlying molecular mechanisms been elucidated. The recent data indicate that such regulatory systems are more complex than originally anticipated.
Ayumi, Tanaka, Ryouichi, Tanaka
openaire +2 more sources
Since the 1970s, researchers have proposed several regulatory pathways governing chlorophyll metabolism, but only recently have the underlying molecular mechanisms been elucidated. The recent data indicate that such regulatory systems are more complex than originally anticipated.
Ayumi, Tanaka, Ryouichi, Tanaka
openaire +2 more sources
Biosynthesis of chlorophyll b and the chlorophyll cycle
Photosynthesis Research, 2002Recent progress in the knowledge of chlorophyll b biosynthesis from chlorophyllide a and reduction of chlorophyll b to chlorophyll a is described. The minireview includes a description of the enzymes involved in these reactions and, where appropriate, of the genes encoding these enzymes.
openaire +2 more sources
Critical Reviews in Food Science and Nutrition, 1990
Revue bibliographique sur les techniques d'extraction, les proprietes spectroscopiques et l'analyse chromatographique des chlorophylles des fruits et legumes et sur leur alteration au cours de la senescence et des processus de transformation ou de ...
S J, Schwartz, T V, Lorenzo
openaire +2 more sources
Revue bibliographique sur les techniques d'extraction, les proprietes spectroscopiques et l'analyse chromatographique des chlorophylles des fruits et legumes et sur leur alteration au cours de la senescence et des processus de transformation ou de ...
S J, Schwartz, T V, Lorenzo
openaire +2 more sources
AJN, American Journal of Nursing, 1955
keeps things outdoors a beautiful green, is one of the most unravelled mysteries of the organic world. We are just scratching the surface of a partial understanding of its properties and the values it may hold when it is used properly. Chlorophyll is the catalyst that converts moisture, carbon dioxide, and the sun's energy-by some means-into the ...
openaire +2 more sources
keeps things outdoors a beautiful green, is one of the most unravelled mysteries of the organic world. We are just scratching the surface of a partial understanding of its properties and the values it may hold when it is used properly. Chlorophyll is the catalyst that converts moisture, carbon dioxide, and the sun's energy-by some means-into the ...
openaire +2 more sources
Chlorophylls and chlorophyll derivatives
1996Chlorophyll derivatives form a significant and growing element in the range of natural pigments used as food colorants. An account is provided of the methods of production and of the products formed under industrial conditions. Consideration is given to the formation of chlorophyll under biological conditions, together with a comprehensive summary of ...
openaire +1 more source
Chemical Physics Letters, 1974
Abstract A molecular orbital calculation, using the “free-electron-network” method, is reported for the absorption spectrum of chlorophyll a and the complexes chlorophyll/ p -dioxane and chlorophyll/ p -benzoquinone. For chlorophyll a , our results are in good agreement with experiment and are substantially the same as those obtained by Weiss ...
Joseph Le Brech +2 more
openaire +1 more source
Abstract A molecular orbital calculation, using the “free-electron-network” method, is reported for the absorption spectrum of chlorophyll a and the complexes chlorophyll/ p -dioxane and chlorophyll/ p -benzoquinone. For chlorophyll a , our results are in good agreement with experiment and are substantially the same as those obtained by Weiss ...
Joseph Le Brech +2 more
openaire +1 more source
Chlorophyll synthetase cannot synthesize chlorophyll a′
European Journal of Biochemistry, 1994Chlorophyll synthetase catalyzes the last step of chlorophyll biosynthesis, namely prenylation (esterification) of chlorophyllide with phytyl diphosphate or geranylgeranyl diphosphate. During investigation of various chlorophyllide derivatives as potential substrates we observed lower esterification with increasing percentages of chlorophyllide a′ in ...
M, Helfrich +4 more
openaire +2 more sources
Energy transfer between Chlorophyll C and Chlorophyll A
Biophysical Chemistry, 1973Abstract Spectral properties of solutions containing mixtures of chlorophyll a and chlorophyll c are investigated. The yield of excitation energy migration from chlorophyll c to chlorophyll a is obtained ranging from 23 to 48% dependent on the used dye concentrations. The back transfer from chlorophyll a to chlorophyll c is negligible.
D, Frackowiak, D, Wróbel
openaire +2 more sources
Dipole Strengths in the Chlorophylls¶†
Photochemistry and Photobiology, 2003Measurements of dipole strengths of chlorophylls in solution are reviewed and correlated. The refractive index dependence is found to be expressible in a simple empirical fashion that does not rely on the concept of vacuum dipole strength. The index dependence in some respects contradicts the dependence expected on the basis of effective field theories.
Robert S, Knox, Bryan Q, Spring
openaire +2 more sources
Photosynthesis Research, 1986
Recent advances in the studies on chlorophyll-protein complexes of higher plants are summarized in this article. Special emphasis is laid on the isolation, pigment composition and the absorption and fluorescence properties of the complexes.
openaire +2 more sources
Recent advances in the studies on chlorophyll-protein complexes of higher plants are summarized in this article. Special emphasis is laid on the isolation, pigment composition and the absorption and fluorescence properties of the complexes.
openaire +2 more sources