How to determine bacterial contamination in cultured cells-Frequently asked questions-He Yuan Li Ji

How to determine bacterial contamination in cultured cells

Pubtime：2024-08-02

View volume：110

After overnight cultivation of cells contaminated with bacteria, the culture medium will significantly turn yellow, and bacterial sediment can be seen with the naked eye in the culture bottle. Shaking the culture medium will cause turbidity, and under a microscope, cells can be observed with fine sand covering the entire bottom of the culture bottle. The distinction between cell debris and contamination can be determined by overnight cultivation. The main components that do not become cloudy overnight are cell debris and metabolites, while those that become significantly yellow and cloudy overnight can be identified as contamination. Bacterial contamination of cells usually erupts to a visible state within 1-2 days, and bacterial contamination generally does not cross contaminate. Timely disposal of contaminated cells is sufficient.

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