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| Product Name: |
Quality Control of Culture Media for Food Microbiology
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| Related proudcts |
sterile ziplock bags, what is sterile dilu, |
| Specifications |
500000 |
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First, quality control of culture media for food microbiology in preparation:
(1) Container: the flask, plate, test tube and other equipment for preparing and repacking the culture medium shall be neutral, free of acid and alkali inhibitor residues, and the bottom of the plate shall be flat, so as to avoid the different thickness of agar and affect the drug sensitivity test results.
(2) Ingredient source: all kinds of ingredients are reliable and do not contain substances that inhibit the growth of the target bacteria. Special requirements of the culture media for food microbiology, such as glucose oxidation fermentation test (O / F test), in addition to adding glucose, can not contain other sugars, and indicators can not use alcohol solution to avoid false-positive in the O / F test. The water for medium preparation shall be distilled water.
(3) PH value adjustment: adjust the pH value according to different requirements of the medium, and control it within ¡À 0.2 of the required range. It should be noted that the pH value of the medium decreased by 0.1-0.2 after autoclaving, so the pH value should be 0.1-0.2 higher than the actual need.
(4) Sterilization: different sterilization methods shall be selected according to the different components and preparation quantity of the culture medium, so as to achieve the sterilization effect without damaging the components of the culture medium. In general, the stable medium can be sterilized under high pressure, i.e. 121 ℃ for 15 minutes, while the medium containing sugar should be sterilized at 108 ℃ to prevent the destruction of sugar. Materials that are not resistant to high heat, such as serum and milk, can be sterilized by interval sterilization.
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| Company: |
Elex Biological Products (Shanghai) Co., Ltd.
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| Contact: |
elex bio |
| Address: |
Room E121, No. 2800, Wanyuan Road, Minhang District, Shanghai City, P.R. China |
| Postcode: |
201100 |
| Tel: |
021-59868187 |
| Fax: |
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| E-mail: |
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