Carotenoids: Physical, Chemical, and Biological Functions by John T. Landrum

By John T. Landrum

Carotenoids are of serious curiosity because of their crucial organic capabilities in either vegetation and animals. even though, the homes and services of carotenoids in average platforms are strangely complicated. With an emphasis at the chemical features of those compounds, Carotenoids: actual, Chemical, and organic features and homes offers a wide assessment and up to date advancements with admire to realizing carotenoid constitution, digital and photochemical homes, and using novel analytical equipment within the detection and characterization of carotenoids and their activities. The textual content additionally explores LC/MS and LC/MS/MS innovations in addition to new purposes of PCR and molecular biology methodologies.

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H. Yan, K. Wang, T. Kuang, J. Zhang, L. Gui, X. An, and W. Chang. 2004. 72 A resolution. Nature 428:287–292. , J. F. F. P. Mason. 2007. Differential effects of carotenoids on lipid peroxidation due to membrane interactions: X-ray diffraction analysis. Biochim. Biophys. Acta 1768:167–174. Mendelsohn, R. W. Van Holten. 1979. Zeaxanthin ([3R,3′R]-beta, beta-carotene-3′-diol) as a resonance Raman and visible absorption probe of membrane structure. Biophys. J. 27:221–235. , A. Polit, Z. I. Gruszecki.

A. Sujak, K. Strzalka, A. H. Schmid. 1999. Organisation of xanthophyll-lipid membranes studied by means of specific pigment antisera, spectrophotometry and monomolecular layer technique lutein versus zeaxanthin. Z. Naturforsch. C 54:517–525. , H. Yuan, Q. Yang, T. Hoshino, A. Yokoyama, and J. Miyake. 1999. Stabilization of liposomal membranes by thermozeaxanthins: Carotenoid-glucoside esters. Biochim. Biophys. Acta 1461:147–154. Havaux, M. I. Gruszecki. 1993. Heat- and light-induced chlorophyll a fluorescence changes in potato leaves containing high or low levels of the carotenoid zeaxanthin: Indications of a regulatory effect of zeaxanthin on thylakoid membrane fluidity.

8 nm for DMPC, and ca. 0 nm in the case of DGDG) the lower the orientation angle. Such a correlation can be interpreted as a demonstration of the general rule that the orientation of polar carotenoids is determined by a matching of the distance between the opposite polar groups of the pigment and the thickness of the hydrophobic core of the membrane. , 2003). A similar orientation of zeaxanthin molecules having cis configurations can be expected in lipid bilayer systems. Interestingly, recent EPR experiments also led to the conclusion that zeaxanthin in a cis configuration is able to span the lipid bilayer, providing that the thickness of the hydrophobic core of the membrane does not exceed the distance between the polar groups of the pigment (Widomska and Subczynski, 2008).

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