Question

consider an acid clot. it can appear as pink or white with a pink band at the top. ​

Answer 1

Answer:

Litmus milk is an undefined medium consisting of skim milk and the pH indicator azolitmin.

Azolitmin is purple between pH of 4.6 and 8.2. It turns pink when pH reaches 4.5 and blue at a pH of 8.3.

Lactose ferminatation turns the litmus pink due to acidity. If litmus is reduced during lactose fermentation it will turn the medium white. Acid may cause an acid clot this is due to the casein precipitating. Heavy gas production can cause stormy fermentation, this is due to the breaking up of the clot.

Explanation:

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Answer 2

When an acid clot appears as pink with a pink band at the top it means the lactose is fermented and acidic while the appearance of a white clot with a pink band at the top means that the litmus was reduced and became clear.

The use of litmus milk as a test indicator

The litmus milk test is an indicator test that is used to differentiate between species of bacteria. It determines those organisms that has the ability to metabolize litmus milk.

Fermentation of lactose is demonstrated when the litmus turns pink as a result of acid production.

Therefore, when an acid clot appears as pink with a pink band at the top it means the lactose is fermented and acidic.

But a negative result can occur with the appearance of a white clot and a pink band at the top. This means that the litmus was reduced and became clear.

Learn more about litmus here:

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