NUTRITIONAL MIXTURE AND METHOD FOR EARLY IDENTIFICATION AND COUNT OF GRAM-NEGATIVE ORGANISMS
申请人:Centro Nacional de Biopreparados
公开号:EP1300471A1
公开(公告)日:2003-04-09
The present invention is related with Microbiology and particularly with a nutrient mixture and a procedure for the identification and the early count of Gram-negative organisms. This mixture allows the development of five different colony colors in the organisms to be detected, and the appearance of three colored fluorescent emissions, the appearance of three different colors halos and zones with opaque precipitates surrounding such colonies. Those factors, together with the color changes in the medium, allow a differentiation with a high sensibility and specificity level.
The mixture include specific relations of the mixtures of tryptophan rich protein fractions, free tryptophan, organic or inorganic salts, color or fluorescence providing substances, cellulose and hemi cellulose and other components which provide from 1 to 2 layers in the composition.
本发明与微生物学有关,特别是与一种营养混合物和一种用于鉴定和早期计数革兰氏阴性生物的程序有关。这种混合物可以使要检测的生物体呈现出五种不同的菌落颜色,出现三种不同颜色的荧光发射,出现三种不同颜色的光晕和菌落周围有不透明沉淀物的区域。这些因素加上培养基中的颜色变化,可以实现高灵敏度和高特异性的区分。
混合物包括富含色氨酸的蛋白质组分、游离色氨酸、有机或无机盐、提供颜色或荧光的物质、纤维素和半纤维素及其他成分的混合物的特定关系,在组成中提供 1 至 2 层。