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Mix Culture Streak Plate Kitchen Lab Microbiology Essay

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Introduction-

The purpose of this experiment is to obtain isolation of individual species of particles from the mixed culture. This is completed through the isolation technique of streak plate. The objective of this experiment is to replicate the technique of streak plate but on a much larger scale. Because it is on a larger scale the particles are able to be visually observed as they are isolated using the streaking technique as the experiment is conducted. The benefits of the streaking technique is when a cultures has multiple species they are able to be more easily identified once they have been isolated. This experiment is much like the experiments completed on an agar plate but on one a much larger scale and where techniques …show more content…

The particles were even more narrowed down in this final streak allowing for further separation of each individual particle. The streaking utensil was cleaned using the particle remover and returned to the utensil storage area. And the other items collected for this lab were cleaned and returned to their storage areas.

Results-

The particles that were collected for the lab were very concentrated prior to being mixed into the medium. Once the particles where mixed into the medium they was a decreased in their concentration as the medium allowed for separation by filling the spaces between them. Once the first streak was made it was slightly less concentrated and this allowed for the particles to be spread out over the surface. The concentration of particles that were spread with each streak continued to decrease. In the final streak, as seen in picture 7, the particles were separated almost to the point of being able to individually identify each color of particle. Much as the same results that you might see with a mixed culture that was completed in a lab and final results reviewed under a microscope.

Discussion-

The conclusion that was made from this experiment was that as the streaking is completed the consistency as well as the concentration degrees allowing for a more accurate identification of the individual particles. The results lead me to this conclusion because as the streaks were completed the

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