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chlorophyll
chlorophyll
The Oxford Pocket Dictionary of Current English
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2009
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© The Oxford Pocket Dictionary of Current English 2009, originally published by Oxford University Press 2009. (Hide copyright information)
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chlo·ro·phyll
/ ˈklôrəˌfil/
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n.
a green pigment, present in all green plants and in cyanobacteria, responsible for the absorption of light to provide energy for photosynthesis. Its molecule contains a magnesium atom held in a porphyrin ring.
DERIVATIVES:
chlo·ro·phyl·lous
/ ˌklôrəˈfiləs/ adj.
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Natural Chlorophyll but Not Chlorophyllin Prevents Heme-Induced Cytotoxic and Hyperproliferative Effects in Rat Colon1,2
Magazine article from: The Journal of Nutrition; 8/1/2005; ; 700+ words
; ...the colonocytes, whereas addition of chlorophyll from green vegetables inhibits these...water-soluble hydrolysis product of chlorophyll that inhibits the toxicity of many planar...colonic hyperproliferation as natural chlorophyll does. Rats were fed a purified control...
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Photoinduced electron transfer between chlorophylls (al b) and fullerenes (C60/C70) studied by laser flash photolysis
Magazine article from: Photochemistry and Photobiology; 7/1/2001; ; 700+ words
; ...systems of chlorophylls (Chi) (chlorophyll-a [Chi...1992) Chlorophyll triplets and...pairs. In Chlorophylls (Edited by...Bommer (1992) Chlorophyll related pigments...medicine. In Chlorophylls (Edited by...
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Development of a Method for Chlorophyll Removal from Canola Oil Using Mineral Acids
Magazine article from: JAOCS, Journal of the American Oil Chemists' Society; 9/1/2005; ; 700+ words
; ...ABSTRACT: Because of the high level of chlorophyll-type compounds found in canola oil...study, a new method for reducing the chlorophyll-type impurities prior to the bleaching...method is based on precipitating the chlorophyll compounds with mineral acids. Concentrations...
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Chlorophyll a Fluorescence: A Signature of Photosynthesis
Magazine article from: Journal of the Torrey Botanical Society; 10/1/2005; ; 700+ words
; Chlorophyll a Fluorescence: A Signature of Photosynthesis...measurable fraction of the light absorbed by chlorophyll is re-emitted as lower-energy photons...light. The yield of fluorescence from chlorophyll associated with photosynthetic membranes...
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Chlorophyllase Is a Rate-Limiting Enzyme in Chlorophyll Catabolism and Is Posttranslationally Regulated
Magazine article from: Plant Cell; 3/1/2007; ; 700+ words
; Chlorophyll is a central player in harvesting light...photosynthesis, yet the rate-limiting steps of chlorophyll catabolism and the regulation of the...Chlase), the first enzyme of the chlorophyll catabolic pathway, we expressed precursor...
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In Vivo Participation of Red Chlorophyll Catabolite Reductase in Chlorophyll Breakdown(W)
Magazine article from: Plant Cell; 1/1/2007; ; 700+ words
; A central reaction of chlorophyll breakdown, porphyrin ring opening...pheophorbide a to the primary fluorescent chlorophyll catabolite (pFCC), requires pheophorbide a oxygenase (PAO) and red chlorophyll catabolite reductase (RCCR), with...
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Identification of a Vinyl Reductase Gene for Chlorophyll Synthesis in Arabidopsis thaliana and Implications for the Evolution of Prochlorococcus Species
Magazine article from: Plant Cell; 1/1/2005; ; 700+ words
; ...and 3-vinyl chlorophyll (monovinyl chlorophyll). Almost all...contain monovinyl chlorophylls, regardless of...accumulate divinyl chlorophylls. Therefore, it...the divergence of chlorophyll types should be...
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Application of molecular orbital calculations to interpret the chlorophyll spectral forms in pea photosystem II
Magazine article from: Photochemistry and Photobiology; 3/1/2001; ; 700+ words
; ...1991) The chlorophyll-protein complexes...of algae. In Chlorophylls (Edited by...1977) Antenna chlorophyll in photosynthetic...determinants for chlorophyll in vivo. Proc...properties of chlorophylls in vivo. Theoretical...
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Energy transfer among CP29 chlorophylls: Calculated Forster rates and experimental transient absorption at room temperature
Magazine article from: Biophysical Journal; 10/1/2000; ; 700+ words
; ...orientation of CP29 chlorophylls was determined...transition energy and chlorophyll a/b affinity...of individual chlorophyll a and b ligands...redistribution among CP29 chlorophylls on solving numerically...energy donors for chlorophylls a, whereas site...composed of a chlorophyll a ...
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Canada's 1999 canola crop suffering from high chlorophyll content.
News Wire article from: Resource News International; 2/24/2000; 700+ words
; ...February 23, 2000 (RESNEWS) - High chlorophyll content in Canada's 1999 canola crop...the 1999 Canadian canola crop's chlorophyll content is higher than least year. The mean chlorophyll content for No.1 Canada canola was...
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Chlorophyll
Book article from: Plant Sciences
...green light by chlorophyll causes plants...accompanying graph). Chlorophylls are cyclic tetrapyrroles...is similar to chlorophyll b but with the...evolutionary ancestors of chlorophylls, occur in photosynthetic...Unlike other chlorophylls, bacteriochlorophylls...Enzymes of ...
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chlorophyll
Book article from: The Columbia Encyclopedia, Sixth Edition
chlorophyll , green pigment that gives...photosynthesis . Chemically, chlorophyll has several similar forms...molecular structure of the chlorophylls is similar to that of...photosynthetic cells of plants the chlorophyll is in the chloroplasts...
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chlorophyll method
Book article from: A Dictionary of Plant Sciences
chlorophyll method A method that is used for estimating the primary productivity...Experimental evidence shows that, with appropriate calibration, the chlorophyll content of the community occupying a given area can form an index of...
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Algae
Book article from: Plant Sciences
...General Morphology Glaucophyta Chlorophyll a Freshwater Unicellular flagellates Phycocyanin Rhodophyta Red algae Chlorophyll a Mostly marine Unicells, filaments...Phycocyanin Cryptophyta Cryptomonads Chlorophyll a Marine and freshwater Mostly...
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Photosynthesis
Book article from: World of Microbiology and Immunology
...complements of additional chlorophylls. Chlorophyta and Euglenophyta have chlorophyll-a and chlorophyll-b...chlorophyll-c. Rhodophyta have chlorophyll-a and chlorophyll-d. The different chlorophylls and other photosynthetic...
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