The following points highlight the top six methods used for obtaining pure culture of microorganisms. The methods are: 1. Streak Plate Method 2. Pour Plate Method 3. Spread Plate Method 4. Serial Dilution Method 5. Single Cell Isolation Methods 6. Enrichment Culture Method. 1. Streak Plate Method: This method is used most commonly to isolate pure cultures of bacteria. A [...]
A pure culture of an organism is a valuable asset and it deserves to be preserved for future. Normally, the cultures which are of daily use are grown in agar slants and kept in the refrigerator. When required, a loopful of growth is transferred to fresh agar or broth and the organisms are allowed to grow in an incubator. For [...]
The below mentioned article provides notes on hydrocarbon metabolism in organisms. Hydrocarbons are organic compounds containing carbon and hydrogen. The simplest hydrocarbon is methane (CH4). A host of bacteria can also use other hydrocarbons like alkanes, alkenes, cyclic and aromatic compounds. Alkanes are linear saturated hydrocarbons having the general formula CH3-(CH2)n-CH3, while alkenes are unsaturated linear molecules. Some examples of [...]