| 摘要 |
The invention consists of a dehydrated culture medium for detection of Streptococcus agalactiae based on pigment detection which requires merely the addition of water and then shaking to make it ready for use. The culture medium when rehydrated turns into a semisolid gel that allows the growth of S.agalactiae inside the medium as orange or red colonies allowing its easy detection. The new instant medium comprises a dehydrated culture medium plus a getting agent e.g. Sephadex 200. When the user adds water a room temperature and shake a gel is form immediately and the medium is ready to use. Streptococcus agalactiae grows in this medium as pigmented colonies allowing for easy detection. The rehydrated medium is thick enough to allow the bacteria not to sediment and the gelling process is quick enough to trap air bubbles during the shaking. These trapped air bubbles remain inside the medium during the incubation time creating interfacial environments where S.agalactiae grows as strongly pigmented colonies. |
