Journal of Lipid Research, Vol 24, 1368-1375, Copyright © 1983 by Lipid Research, Inc.

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Determination of peracetylated sulfoglycolipids using the azure A method

K Tadano-Aritomi and I Ishizuka

Several sulfoglycolipids, including sulfogalactosylceramide, sulfolactosylceramide, monosulfogangliotriaosylceramide, monosulfogangliotetraosylceramide, bis-sulfogangliotriaosylceramide, bis-sulfogangliotetraosylceramide, seminolipid, and lysoseminolipid, were assayed by the azure A procedure (Kean, E.L. 1968. J. Lipid Res. 9: 319-327). The color yields were different significantly among each sulfoglycolipid. The accurate determination of monosulfoglycolipids having longer carbohydrate chains than sulfolactosylceramide as well as bis-sulfoglycolipids could not be achieved because of the low color yields, turbidity, and/or formation of an additional chromogen. However, the quantitative determination of these complex sulfoglycolipids could be achieved using the azure A procedure when these compounds were assayed after peracetylation. Using the modified Kean procedure, the behavior of these sulfoglycolipids in the chloroform-methanol-water partition system was compared.
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