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Laboratory diagnosismicrobiology

Sugar Media - Composition and Uses - Important Culture Media

Sugar Media:

1. Nutrient broth
2. Peptone water
3. Bromocresol purple (indicator)
4. Sugar (eg. glucose, sucrose, lactose, maltose xylose, mannitol, for which fermentation is to be determined)

Test tube.

1. Purple befor reaction
2. Yellow after reaction

Liquid medium

To determine which sugar is utilized by bacteria. Type of sugar contained in test tube is known by the color of cotton plug of test tube, which are.
1. glucose - green
2. sucrose- white
3. Lactose- red
4. Maltose- Blank
5. Xylose- Blue
6. Mannitol- Violet.

Important Culture Media:

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