Abstract
A simple method for microdetermination of muramic acid is elaborated. The method is based on the degradation of muramic acid to lactic acid, followed by degradation of the latter to acetaldehyde which can be determined colorimetrically with p-hydroxydiphenyl (PHD). A linear relationship exists between the concentration of muramic acid (up to 20 μg), and absorbance at 560 nm. Substances usually present in the hydrolysates of bacterial cell wall peptidoglycan do not interfere in the determination.
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