Agares y pruebas Bioquimicas en Alimentos

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Flashcards on Agares y pruebas Bioquimicas en Alimentos , created by Antonio Pirateque on 02/09/2014.
Antonio Pirateque
Flashcards by Antonio Pirateque, updated more than 1 year ago
Antonio Pirateque
Created by Antonio Pirateque about 10 years ago
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Question Answer
Agar EMB * Selectivo Bacilos G (-) * Favorece desarrollo F/lia enterobacteriaceae * Indicadores e inhibidores -Eosina y Azul de metileno E. coli - Cinetrobacter ==> Brillo metálico Lactosa positivo ==> centro obscuro y perisferia azulada o rosa
Agar VRBA Medio selectivo y Rto en alimentos * Inhibe biota G(+) ==> Sales biliares y Cristal violeta *Indicador pH ==> Rojo neutro - pH ↑: Amarillo - pH ↓: Rojo Hidrato fermentable ==> Lactosa (color rojo purpura con precipitado de bilis rojiza)
Chromocult Coliform Agar * Salmón GAL ==> B-D galactosidasa (color rojo; CT) * X- Glucorónido ==> B-D Glucoronidasa (Color azul; CF) Se debe confirmar presencia de E. coli en EMB tanto a 37 como a 45 °C
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