Source:http://linkedlifedata.com/resource/pubmed/id/16742455
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| Predicate | Object |
|---|---|
| rdf:type | |
| lifeskim:mentions | |
| pubmed:issue |
3
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| pubmed:dateCreated |
2010-6-25
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| pubmed:abstractText |
1. Examination of two zooplankton species predominating in fish ponds, Daphnia magna and Chironomus larvae, revealed the presence of alpha- and beta-carotene, echinenone, canthaxanthin and 3-hydroxy-4-oxo-beta-carotene in Daphnia, and beta-carotene and cryptoxanthin ester in Chironomus. No specific provitamins A(2) (containing a 3,4-dehydro-beta-ionone ring) were detected. 2. Guppies (Lebistes reticulatus) and platies (Xiphophorus variatus) were found to form vitamin A from beta-carotene and from its oxygen-containing derivatives isozeaxanthin, canthaxanthin and astaxanthin. Slight conversion into vitamin A(2) seemed to occur simultaneously. 3,4-Dehydro-3'-hydroxy-beta-carotene formed little vitamin A, and the latter was mainly of the A(2) type. Lutein was devoid of provitamin A properties. 3. In addition to vitamin A, beta-carotene was detected in fish receiving the 4-oxo- and 4-hydroxy-carotenoids. A reaction scheme for the conversion of carotenoids into retinal and and 3,4-dehydroretinal is presented. 4. It is concluded that natural 4-oxo derivatives of beta-carotene may play a significant role as vitamin A precursors for fish.
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| pubmed:commentsCorrections |
http://linkedlifedata.com/resource/pubmed/commentcorrection/16742455-13489430,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16742455-13754347,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16742455-13937290,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16742455-13981133,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16742455-14069229,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16742455-14806391,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16742455-15392848,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16742455-15392849,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16742455-16746914,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16742455-5866161,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16742455-5879787
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| pubmed:language |
eng
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| pubmed:journal | |
| pubmed:status |
PubMed-not-MEDLINE
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| pubmed:month |
Dec
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| pubmed:issn |
0264-6021
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| pubmed:author | |
| pubmed:issnType |
Print
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| pubmed:volume |
101
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| pubmed:owner |
NLM
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| pubmed:authorsComplete |
Y
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| pubmed:pagination |
747-54
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| pubmed:dateRevised |
2010-9-14
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| pubmed:year |
1966
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| pubmed:articleTitle |
Conversion of carotenoids into vitamins A(1) and A(2) in two species of freshwater fish.
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| pubmed:affiliation |
Faculty of Agriculture, Hebrew University of Jerusalem, Rehovot, Israel.
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| pubmed:publicationType |
Journal Article
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