Fucoxanthin


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fucoxanthin

[¦fyü·kō¦zan·thən]
(biochemistry)
C40H60O6 A carotenoid pigment; a partial xanthophyll ester found in diatoms and brown algae.

Fucoxanthin

 

C40H56O6, a yellow carotenoid pigment found in diatoms and in brown and golden algae; a xanthophyll. Fucoxanthin occurs in algae together with chlorophyll, the basic photosynthetic pigment. The absorption spectrum of fucoxanthin in the visible region has three maxima—at 424–436, 448–460, and 471—492 nanometers. No flourescence has been detected. Fucoxanthin takes part in photosynthesis by ensuring the transfer of absorbed luminous energy to chlorophyll. The high efficiency of the energy transfer indicates that fucoxanthin is located in close proximity to chlorophyll.

References in periodicals archive ?
Pigment Abbreviation Occurrence Zeaxanthin ZEA Cvanobacteria Divinyl Chlorophyll a DIVa Prochlorophytes Fucoxanthin FUC Diatoms Peridinin PER Dinoflagellates 19'-Butanoyloxyfucoxan- BUT Chrysophytes 19'-Hexanoyloxyfucoxan- HEX Prymnesio- Chlorophyll b CHLb Chlorophytes Pigment Major groups Zeaxanthin Divinyl Chlorophyll a Prokaryotic picoplankton Fucoxanthin Large cukaryotes Peridinin 19'-Butanoyloxyfucoxan- 19'-Hexanoyloxyfucoxan- Eukaryotic nanoflagellates Chlorophyll b Table 2.
Fucoxanthin induces GADD45A expression and G1 arrest with SAPK/JNK activation in LNCap human prostate cancer cells.
A change in these pigment compositions could directly affect the wavelength bands used as the optimal NDI in our study as the most abundant diatom photosynthetic carotenoid, fucoxanthin, has a broad absorption peak from 490 to 515 nm, whereas the important photoprotective carotenoid, diadinoxanthin, has a sharp peak centered at ~490 nm (Bricaud et al.
The products are mainly made in Southern Ireland and bottled in England, although the fucoxanthin supplement is made in the US and packaged in the UK under Healtharena's Advanced Nutrition brand.
BROWN seaweed, used to flavour Asian soups and salads, contains a fat-burning compound called fucoxanthin that helps weight loss.
Specifically, animal tests showed that a pigment in the seaweed called fucoxanthin promotes weight loss.
Photopigment markers include chlorophyll b and lutein (chlorophytes), zeaxanthin, myxoxanthophyll, and echinenone (cyanobacteria), fucoxanthin (diatoms), peridinin (dinoflagellates), and alloxanthin (cryptomonads).
In general these organisms have yellowish chromatophores (chlorophyll a and c and fucoxanthin are the basic pigments) that never accumulate starch as a reserve, with differentiated flagella (when present), clear plasma, and a cell covering of small scales rich in structural detail, some of them mineralized, that may extend to varying degrees over the flagella.
These pigments include compounds that allow discrimination of cryptophytes (alloxanthin), diatoms (diatoxanthin), dinoflagellates (peridinin), cyanobacteria (zeaxanthin), filamentous cyanobacteria (myxoxanthophyll, oscillaxanthin), chlorophytes (lutein, Chl b, and derivatives), as well as chromophytes (chrysophytes, diatoms, some dinoflagellates; fucoxanthin, Chl c).
Several characteristics in Andersen's ultrastructure data set including the girdle lamella, fucoxanthin, and carotenoids appear to be randomized in the rRNA trees.
Higher concentrations of the diatom pigment marker, fucoxanthin, were found in the high Callianassa densities, indicating higher standing stocks of diatoms.
Fucoxanthin (CAS 3351-86-8) Market Research Report 2012 presents comprehensive data on fucoxanthin markets globally and regionally (Europe, Asia, North America etc.