The occurrence of enantiomeric and meso-astaxanthin in aquatic animals.

Matsuno, Takao; Maoka, Takashi; Katsuyama, Masaaki; Ookubo, Masahiro; Katagiri, Kiyoshi; Jimura, Hajime

doi:10.2331/suisan.50.1589

Cited by 40 publications

(9 citation statements)

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“…Adonixanthin and pectenolone were present in both free and esterified forms. As in other crustaceans 7,10) , astaxanthin in both free and esterified forms was consisted of 3R, 3'R, meso, and 3S, 3'S optical isomers at an approximate ratio of 2:2:6. Furthermore, adonirubin consisted of 3R and 3S optical isomers at an approximate ratio of 3:7. b-Carotene ( ), zeaxanthin ( ), alloxanthin ( ), and diatoxanthin ( ) were also identified.…”

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confidence: 99%

Carotenoids and Their Fatty Acid Esters of Spiny Lobster Panulirus japonicus

Maoka

Akimoto

2008

J. Oleo Sci.

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confidence: 99%

Carotenoids and Their Fatty Acid Esters of Spiny Lobster Panulirus japonicus

Maoka

Akimoto

2008

J. Oleo Sci.

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“…The predominant carotenoid pigment in the crustacean exoskeleton is astaxanthin (Goodwin and Srisukh, 1949;GoodWin, 1954;Matsuno et al, 1984;Zagalsky et al, 1990). When bound to specific proteins, thus forming astaxanthin-protein complexes, the absorbance spectra of the resulting carotenoproteins might be greatly shifted away from that of free astaxanthin (Zagalsky et al, 1990).…”

Section: Discussionmentioning

confidence: 99%

A novel function for a carotenoid: astaxanthin used as a polarizer for visual signalling in a mantis shrimp

Chiou

Place

Caldwell

et al. 2012

Journal of Experimental Biology

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SUMMARYBiological signals based on color patterns are well known, but some animals communicate by producing patterns of polarized light. Known biological polarizers are all based on physical interactions with light such as birefringence, differential reflection or scattering. We describe a novel biological polarizer in a marine crustacean based on linear dichroism of a carotenoid molecule. The red-colored, dichroic ketocarotenoid pigment astaxanthin is deposited in the antennal scale of a stomatopod crustacean, Odontodactylus scyllarus. Positive correlation between partial polarization and the presence of astaxanthin indicates that the antennal scale polarizes light with astaxanthin. Both the optical properties and the fine structure of the polarizationally active cuticle suggest that the dipole axes of the astaxanthin molecules are oriented nearly normal to the surface of the antennal scale. While dichroic retinoids are used as visual pigment chromophores to absorb and detect polarized light, this is the first demonstration of the use of a carotenoid to produce a polarizing signal. By using the intrinsic dichroism of the carotenoid molecule and orienting the molecule in tissue, nature has engineered a previously undescribed form of biological polarizer.

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“…Astaxanthin is a carotenoid in red pigment in nature and contained in salmon, shrimp, crab, krill, Phaffia yeast, and Haematococcus algae [62,63]. It is a powerful antioxidant and has various actions such as anti-inflammation [64], anti-hypertension [65], anti-diabetic nephropathy [66], anti-muscle damage [67], and anti-cancer [68].…”

Section: Astaxanthinmentioning

confidence: 99%

Diet and metabolic syndrome

Akagiri

Naito²,

Yoshikawa³

2008

PsycEXTRA Dataset

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Recent change in lifestyle, including physical inactivity and unhealthy diets, are likely to have played an important role in global epidemic of obesity, type2 diabetes mellitus (T2DM), and the metabolic syndrome (MetS). Implementation of a healthy lifestyle, with an increase in physical activity and reduction of body weight, based on the regulation of calories and fat intake, are the basis for the prevention and treatment of lifestyle related disease. This review highlights some recent advances in the understanding of metabolic and molecular mechanisms concerning the effect of diet and focuses on the prevention and/or improvement of dyslipidemia, insulin resistance, impaired glucose homeostasis, obesity, T2DM and MetS in experimental rodent models, with some extension to humans.

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The occurrence of enantiomeric and meso-astaxanthin in aquatic animals.

Cited by 40 publications

References 0 publications

Carotenoids and Their Fatty Acid Esters of Spiny Lobster Panulirus japonicus

Carotenoids and Their Fatty Acid Esters of Spiny Lobster Panulirus japonicus

A novel function for a carotenoid: astaxanthin used as a polarizer for visual signalling in a mantis shrimp

Diet and metabolic syndrome

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