How can we observe Lactobacilli in buttermilk? – InterviewSolution

1.	How can we observe Lactobacilli in buttermilk?
Answer» Smear a drop of fresh buttermilk on a glass slide. Stain it with methylene blue and put a coverslip over it. Observe the smear under the 10X objective of a compound microscope and then with the more powerful 60X objective. The blue rod-shaped organisms moving about are Lactobacilli.

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