answersLogoWhite

0


Best Answer

It is important to remember that fermentation can occur with or without the presence of oxygen, and during prolonged incubation periods, many bacteria will begin growing oxidatively on the peptone after exhausting the supplied carbohydrate. This results in neutralization of the indicator, turning it black to red due to the alkaline conditions created by ammonia production. Consequently, fermentation tubes should not be incubated over 48 hours after inoculation for this reason.

User Avatar

Chad Rath

Lvl 10
2y ago
This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: Why are fermentation tubes evaluated at 24 and 48 hours?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Related questions

How long is glucose fermentation differential test incubation temperature and time?

Glucose fermentation differential test is typically incubated at 35-37°C for 18-24 hours. This temperature and time frame allow for the optimal growth and metabolism of bacteria to observe fermentation of glucose.


Why is that the fermentation readings with TSIA and KIA must take place within 18 to 24 hours after incubation from?

Fermentation readings with TSIA and KIA tests must take place within 18 to 24 hours because this is when the results are most accurate. After this time frame, there may be overgrowth of certain bacteria or alterations in the pH of the media that can affect the interpretation of results. Reading the tests within this window ensures reliable and consistent identification of the fermentation patterns of the bacteria being tested.


How long does an egg move through the oviduct?

IT can take 1/2 hour while other sperms can take days..


How many hours is 8am to 8am?

It is 24 hours.8am to 8pm = 12 hours.8pm to 8am = 12 hours.2 x 12 = 24.


Is 28 hours more than 3 days?

1 day = 24 hours 3 days = 24 hours x 3 = 24 hours + 24 hours + 24 hours = 72 hours 28 hours - 72 hours = 24 hours is less than by 44 hours


A store bought 6 boxes of toothpaste for 64.74 Each box contains 24 individual tubes of toothpaste About how much do 10 tubes of toothpaste cost?

If a store bought 6 boxes of toothpaste for 64.74 and there were 24 tubes in each box, the total cost for 10 tubes would be $26.98.


How many hours is there in a day?

Its 24 hours


When would 24 hours be up?

In 24 hours!


What is 52 percent of 24 hours?

52% of 24 hours= 52% * 24= 0.52 * 24= 12.48 hours OR 12 hours 28 minutes 48 seconds


104 hours days hours?

24 + 24 + 24 + 24 = 96 104 - 96 = 8 Answer: 4 days 8 hours


How many hours are there in a weekend?

It's 48 Hours because: There 24 Hours in a day so i did 2x24 or 24+24 =48 hours


How many hours does it take to make 50000 shoes in 2.3 days?

Presumably 2.3*24 hours = 55.2 hours.Presumably 2.3*24 hours = 55.2 hours.Presumably 2.3*24 hours = 55.2 hours.Presumably 2.3*24 hours = 55.2 hours.