why is ground beef a better bacterial growth medium than a s

why is ground beef a better bacterial growth medium than a steak or a roast? EMB agar plates are used in both water and food testing procedures. Explain why this particular medium is used?

Solution

Grinding exposes is going to make bacteria t be grounded up throughout the meat result in higher exposure of interior meat components (proteins, fats etc) to bacteria that could be on the metal surface or in the air. Sometimes the equipment & unhygienic procedures of processing may lead to \"medium\" with higher bacterial growth in ground beef. In case, of roast or steak, the interior meat is sterile & it will get more bacterial exposure until it exposed to outside through cutting or dissecting

Ques-2: EMB agar plates are used in both water and food testing procedures. Explain why this particular medium is used?

Answer: The main purpose of using eosin-methylene blue (EMB) agar medium is in water & food testing procedures because it has specific toxic nature to Gram positive and useful to detect coliform Gram- negative bacteria therefore it is selective and differential medium for the identification of Gram- negative bacteria.For example, prokaryotes such as Escherichia coli often form black to metallic green colonies on EMB (eosin-methylene blue agar medium). These eosin & methylene blue are going to be useful mainly for isolation, differentiation of coliforms in water & food and fecal coliforms in water & food samples