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What selective growth media is best suited for isolation of coliform bacteria?
MacConkey agar is commonly used for isolation of coliform bacteria as it selectively allows for the growth of Gram-negative bacteria, including coliforms, while inhibiting the growth of Gram-positive bacteria. Additionally, Eosin Methylene Blue (EMB) agar can also be used for the isolation of coliform bacteria as it helps differentiate between lactose-fermenting and non-lactose fermenting Gram-negative bacteria.
How many teaspoons is 7 g agar agar powder?
Approximately 2 teaspoons of agar agar powder is equivalent to 7 grams.
From which organism agar agar is extracted?
Agar agar is extracted from red algae, specifically from the cell walls of species such as Gelidium, Gracilaria, and Pterocladia.
Is there a microorganism that degrades Agar agar?
Yes, some marine bacteria and fungi have been identified to possess the capability to degrade agar agar. These microorganisms secrete enzymes such as agarases that breakdown agar into simpler sugars, which they can then use as a source of energy.
Which group of algae produce agar agar?
Agar comes from Red Algae (primarily the Gracilaria genus).It mainly is produed from the red algae Gracilaria lichenoides.This algae is harvested along the western coast of the United States and in parts of Asia. To extract the agar the Algae is boiled, cooled, purified and then dried. The agar is then make into blocks, flakes, or granules.("Agar agar" is usually abbreviated as "agar".)
