What's the difference between phylloxanthin and xanthophyll?

Phylloxanthin


Definition:

  • (n.) A yellow coloring matter extracted from chlorophyll.

Example Sentences:

Xanthophyll


Definition:

  • (n.) A yellow coloring matter found in yellow autumn leaves, and also produced artificially from chlorophyll; -- formerly called also phylloxanthin.

Example Sentences:

  • (1) In general, polymeric C18 columns allow for the detection of cis carotenes, while monomeric C18 columns provide for some separation of certain xanthophylls.
  • (2) The characterization of two novel triterpenoid xanthophylls occurring in Streptococcus faecium UNH 564P is described.
  • (3) The relationship between dietary levels of xanthophyll, the degree of pigmentation in the hen, and egg production rate was studied in commercial broiler breeders (Anak 2000).
  • (4) The influences of fundus pigments like oxihemoglobin, melanin, xanthophyll and rhodopsin as well as the intensity and the exponent of the scattered light are optimized.
  • (5) Most reports have focused on the hydrocarbon carotenoids (lycopene, alpha-carotene, and beta-carotene) with fewer dealing with the more polar xanthophyll pigments.
  • (6) Theoretically, 577 nm seems to be a particularly useful wavelength for the treatment of a wide variety of retinal lesions because it is not absorbed in xanthophyll and penetrates opacities of the optic media better than argon blue green.
  • (7) The generalization that yellow flowers contained large amounts of xanthophylls and only traces of carotenes, whereas deep-orange flowers seemed to be characterized by the presence of large amounts of one carotene, was not always the correct one.
  • (8) In theory, the longer wavelength of the solid-state laser offers the advantages of less scattering in ocular media, higher absorption by oxyhemoglobin, and less absorption by macular xanthophyll than the 514-nm wavelength of the regular green argon laser.
  • (9) In chick plasma studies, it was observed that endogenious xanthophylls participated in the antioxidant defenses against the attack of aqueous peroxyl radical.
  • (10) It was also observed that rather small concentrations of added xanthophylls (molar fraction up to 3%) increase the pigmented bilayer thickness by a value of about 2 A as compared with that of the pure DMPC bilayer.
  • (11) The studies involving uninoculated birds with reciprocal chagnes between high and low xanthophyll diets indicated that plasma carotenoids are a more rapid and sensitive means of measuring changes in pigmentation levels than are visual skin scores carotenoid levels from the skin.
  • (12) Therefore, the AB96 gene product contains binding sites for chlorophylls a and b and xanthophylls, all of which are necessary for optimal reconstitution in vitro.
  • (13) A number of xanthophylls were included in this study; it would appear that an epoxide group rather than carbonyl or hydroxyl substituents increase the reactivity of the carotenoid with respect to O2(1 delta g).
  • (14) Using Raman spectroscopy, we demonstrate that low levels of beta-carotene, lycopene, and xanthophyll give rise to resonance enhanced bands in blood plasma.
  • (15) Conversely, a marked increase in the xanthophyll : Cr2O3 ratio was observed in the cecal contents of chicks inoculated with E. tenella compared with uninuoculated controls or those inoculated with E. acervulina.
  • (16) The bright yellows, oranges, and reds are due mostly to xanthophylls; keto and hydroxy carotenes.
  • (17) For both the monohydroxy-xanthophylls, alpha-cryptoxanthin and beta-cryptoxanthin, and the dihydroxy-xanthophylls, lutein and zeaxanthin, the beta, beta structural isomer (beta-cryptoxanthin or zeaxanthin) is less abundant than the beta, epsilon isomer in plasma than in the diet.
  • (18) Dark and photooxidative degradation of the cells is accompanied with an increase in the level of epiphase xanthophylls (particularly, ketoxanthophylls) and a decrease in the level of carotenes and glycoside xanthophylls, whereas the total content of carotenoids decreases.
  • (19) In result of the analyses the presence of the following carotenoids has been established: beta-zeacarotene, canthaxanthin, cryptoxanthin, alpha-cryptoxanthin, isocryptoxanthin, lutein, lutein-5,6-epoxide, zeaxanthin, isozeaxanthin, tunaxanthin, flavoxanthin, astaxanthin ester, 4-hydroxy-alpha-carotene, 4-keto-alpha-carotene and unknown xanthophylls.
  • (20) The findings also support the view that the xanthophylls lutein and zeaxanthin are formed from the corresponding carotenes and are especially important in the development of a normal chloroplast structure.

Words possibly related to "phylloxanthin"

Words possibly related to "xanthophyll"