chlorophyll

(redirected from Chlorophylls)
Also found in: Dictionary, Thesaurus, Encyclopedia.

chlorophyll

 [klor´o-fil]
any of a group of green pigments, containing a magnesium-porphyrin complex, that are involved in oxygen-producing photosynthesis. Preparations of water-soluble chlorophyll derivatives are sometimes applied topically for deodorization purposes. They may also be administered orally to deodorize ulcerative lesions as well as urine and feces in colostomy, ileostomy, or incontinence.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

chlor·o·phyll

(klōr'ō-fil),
The magnesium complex of the phorbin derivative found in photosynthetic organisms; light-absorbing green plant pigments that, in living plants, convert light energy into oxidizing and reducing power, thus fixing CO2 and evolving O2; the naturally occurring forms are chlorophyll a, b, c, and d.
See also: phorbin.
Farlex Partner Medical Dictionary © Farlex 2012

chlorophyll

(klôr′ə-fĭl)
n.
Any of a group of green pigments that capture light energy used as the energy source in photosynthesis and that are found in the chloroplasts of plants and other photosynthetic organisms such as cyanobacteria, especially:
a. A waxy blue-black microcrystalline green-plant pigment, C55H72MgN4O5, with a characteristic blue-green alcohol solution. Also called chlorophyll a.
b. A similar green-plant pigment, C55H70MgN4O6, having a brilliant green alcohol solution. Also called chlorophyll b.

chlo′ro·phyl′lous adj.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

chlorophyll

Biology
The green plant pigment pivotal in photosynthesis, the manufacture of carbohydrates from CO2 and H2O.

Fringe nutrition
While chlorophyll resembles haemoglobin chemically, it has no role in human metabolism; there is, therefore, no basis for using chlorophyll to treat allergies, anaemia, arthritis, colitis, coughs, hypertension, infections, ulcers, and many other conditions, as has been recommended by some alternative medical practitioners.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.

chlor·o·phyll

(klōr'ō-fil)
A complex of light-absorbing green pigments that, in living plants, convert light energy into oxidizing and reducing power, thus fixing CO2 and evolving O2; the naturally occurring forms are chlorophyll a, b, c, and d.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

chlorophyll

a group of pigments giving a green coloration to most plants, which is found in any part of the plant that is exposed to sunlight. The pigments are usually contained in cell organelles called CHLOROPLASTS. Chlorophyll is a PORPHYRIN containing magnesium and exists in several forms which have different side chains. Typically, chlorophylls a (blue-green) and b (yellow-green) are found in higher plants; chlorophylls c and d are found in algae. Chlorophyll has the vital function of absorbing light energy for PHOTOSYNTHESIS. see ACTION SPECTRUM. A related pigment, BACTERIOCHLOROPHYLL, containing manganese instead of magnesium, is found in photosynthetic bacteria.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005

chlor·o·phyll

(klōr'ō-fil)
Light-absorbing green plant pigments that, in living plants, convert light energy into oxidizing and reducing power, thus fixing CO2 and evolving O2.
Medical Dictionary for the Dental Professions © Farlex 2012
References in periodicals archive ?
The objective of this paper is to study the variability of responses to low temperatures and to analyze the relationship with the morphological characteristics (growth) and physiological (chlorophyll levels) of this material for this parameter for possible use in the renovation of grasslands.
Regression at P [less than or equal to] 0.05 analysis was used to estimate the rate of chlorophyll degradation during post production shelf life.
The aim of this study was to physiologically characterize the bromeliads Nidularium campo-alegrense Leme and Aechmea ornata Baker, as for the quantification of starch, carbohydrates, carotenoids and chlorophyll content, and density of trichomes and stomata; important physiological parameters in the analysis of plant metabolism.
Chlorophyll a serves a dual role in oxygenic photosynthesis: in light harvesting as well as in converting energy of absorbed photons to chemical energy [3].
Among the latest techniques to evaluate the plants' nutritional status in real time is the highlighting of the leaves' green color intensity analysis, since there is a significant correlation between the intensity of the green color and chlorophyll contents with N concentration in the leaf (GIL et al., 2002).
The axial attachment of chlorophylls to amine ligants is well established, although most studies do not use chlorophyll a and b, mainly because of their labile character [19].
At present, hyperspectral remote sensing has made progress in monitoring vegetation pigment contents, and some hyperspectral chlorophyll indices have been proposed by maximizing the reflection information of vegetation and minimizing the influence of external factors (e.g., aerosol, soil background, and nonphotosynthetic materials) [12-20].
This research also aimed to study the physiology of rain tree by determining the chlorophyll content from leaves by ages.
Key words: Canola, Brassica napus, drought, growth stages, chlorophyll, proline.
The researchers still have to determine how the light antennae of modified Spirulina chlorophylls work in practice.