| 摘要 |
<p>The invention relates to the field of microbiology, more particularly to a nutritional mixture and to a method for early identification and count of gram-negative microorganisms. Five different colors, three-colored fluorescent emissions, three-colored halos and opaque precipitation zones around the colonies appear in the culture medium depending on the microorganism in question. This makes it possible to establish differentiation with a high degree of sensitivity and specificity. The mixture comprises specific ratios of protein fractions that are rich in free or combined tryptophan, organic and/or inorganic salts, substances that provide color or fluorescence, growth inhibitors of gram-positive organisms, in addition to cellulose and hemicellulose and other components which provide the solid structure of the culture medium.</p> |
