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首页> 外文期刊>Journal of Agricultural and Food Chemistry >Carotenoids in three species of Corbicula Clams, Corbicula japonica, Corbicula sandai, and Corbicula sp. (Chinese Freshwater Corbicula Clam).
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Carotenoids in three species of Corbicula Clams, Corbicula japonica, Corbicula sandai, and Corbicula sp. (Chinese Freshwater Corbicula Clam).

机译：三个类的Corbicula蛤，类Corbicula japonica，Corbicula sandai和Corbicula sp中的类胡萝卜素。 （中国淡水蛤bic）。

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摘要

Carotenoids were investigated in three species of corbicula clams, Corbicula japonica, Corbicula sandai, and Corbicula sp. (Chinese freshwater corbicula clam). Forty-three carotenoids were isolated. Among them, 7,8-didehydro-beta-cryptoxanthin (12), peridininol 5,8-furanoxide (38), pyrrhoxanthin 5,8-furanoxide (40), and pyrrhoxanthinol 5,8-furanoxide (43) are newly reported as naturally occurring carotenoids. Their structures were characterized on the basis of UV-vis, FAB-MS including MS/MS experiments, and 1H NMR spectroscopic data. The total carotenoid contents in C. japonica, C. sandai, and Chinese freshwater corbicula clam were found to be 5.3, 2.6, and 0.3 mg/100 g in the edible part (wet weight), respectively. Peridinin (34) and its derivatives were found to be major carotenoids in C. japonica, which inhabits brackish water. On the other hand, lutein (13) was found to be the major carotenoid in C. sandai and Chinese corbicula clams, which inhabit freshwater. These patterns well reflected the carotenoids in their dietary algae. 7',8'-Didehydrodeepoxyneoxanthin (19), corbiculaxanthin (21), corbiculaxanthin 3'-acetate (22), and 6-epiheteroxanthin (24) were found in all three species of corbicula clams and have not previously been found in other shellfishes. They were assumed to be peculiar carotenoids in corbicula clams.
机译：研究了三种类of，日本species，日本大sand和日本sand的类胡萝卜素。 （中国淡水cor）。分离出四十三种类胡萝卜素。其中，新近报道了7,8-二氢-β-隐黄质（12），peridininol 5,8-呋喃氧化物（38），pyrrhoxanthin 5,8-呋喃氧化物（40）和pyrrhoxanthinol 5,8-呋喃氧化物（43）。自然存在的类胡萝卜素。根据紫外可见光谱，FAB-MS（包括MS / MS实验）和1H NMR光谱数据对它们的结构进行了表征。在可食用部分（湿重）中，粳稻，散打稻和中国淡水cor的总类胡萝卜素含量分别为5.3、2.6和0.3 mg / 100 g。芹菜素（34）及其衍生物被发现是生活在微咸水中的C. japonica中的主要类胡萝卜素。另一方面，叶黄素（13）被发现是居住在淡水中的桑达梭菌和中国cor的主要类胡萝卜素。这些模式很好地反映了饮食藻类中的类胡萝卜素。在所有三种蛤科蛤中都发现了7'，8'-二氢深氧新黄嘌呤（19），角鲨黄素（21），角鲨黄素3'-乙酸盐（22）和6-表杂黄嘌呤（24），以前没有在其他贝类中发现过。假定它们是小bic中特有的类胡萝卜素。

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