Distribution of N-Acetylneuraminic Acid and Sialylglycan in Eggs in Silky Fowl
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Authors
Koketsu, M.
Sakuragawa, E.
Linhardt, Robert J.
Ishihara, H.
Issue Date
2003-03-01
Type
Article
Language
ENG
Keywords
Biology , Chemistry and chemical biology , Chemical and biological engineering , Biomedical engineering
Alternative Title
Abstract
The distribution of sialic acid in the eggs of original Silky fowl was investigated. The sialic acid contents of the yolk, albumen and the chalaza of a single egg were 205·2, 11·96 and 0·83 mg, respectively. 2. The sialic acid content of the yolk of Silky eggs was 11·5-fold higher than that of a conventional domestic fowl yolk. 3. Sialic acid isolated from Silky yolk was entirely N-acetylneuraminic acid (NeuAc). No N-glycolylneuraminic acid or O-acetyl containing sialic acid was observed. 4. The structure of the major sialylglycan in Silky egg yolk was determined to be a disialyl-biantennary chain in which the NeuAc residues were α2-6 linked to glucose. No α2-3 linkage was observed. 5. Thus, the Silky fowl's egg provides an excellent source of NeuAc and sialylglycan.
Description
British Journal of Poultry Science, 44, 145-148
Note : if this item contains full text it may be a preprint, author manuscript, or a Gold OA copy that permits redistribution with a license such as CC BY. The final version is available through the publisher’s platform.
Note : if this item contains full text it may be a preprint, author manuscript, or a Gold OA copy that permits redistribution with a license such as CC BY. The final version is available through the publisher’s platform.
Full Citation
Distribution of N-Acetylneuraminic Acid and Sialylglycan in Eggs in Silky Fowl, M. Koketsu, E. Sakuragawa, R. J. Linhardt, H. Ishihara, British Journal of Poultry Science, 44, 145-148, 2003.
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PubMed ID
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ISSN
71668