Mergenthaler E, Scherz H
Z Lebensm Unters Forsch. 1976;162(2):159-62. doi: 10.1007/BF01274258.
Alduronic acids can be found among the monomeric units of polysaccharides, which are used as stabilisators in the food industry. Gaschromatographically they cannot be separated directly by the way of their aldonitrilacetates but it is possible by the procedure described. The 1-0-methylalduronic-acidmethylesters, obtained by the methanolysis of the polysaccharides, are reduced with boronhydrid to the corresponding methyl glycosides; there are split with acid to the aldoses, which are converted in pyridine with hydroxylamine to the aldoximes and than with acetic anhydride to the aldonitrilacetates, which can be separated by gaschromatography without difficulty.
醛糖醛酸可在多糖的单体单元中找到，多糖在食品工业中用作稳定剂。通过气相色谱法，它们不能通过其醛糖腈乙酸酯直接分离，但按照所述方法是可行的。多糖经甲醇解得到的1-O-甲基醛糖醛酸甲酯用硼氢化物还原为相应的甲基糖苷；用酸裂解为醛糖，醛糖在吡啶中与羟胺反应生成醛肟，然后与乙酸酐反应生成醛糖腈乙酸酯，醛糖腈乙酸酯可通过气相色谱法轻松分离。
