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alcoholic fermentation and lactic acid fermentation
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Why do some lactose fermenters produce gas bubbles whereas others do not?
Gas bubbles are produced by lactose fermenters as a byproduct of fermentation. Some lactose fermenters may produce more gas due to differences in the types and abundance of gas-producing enzymes they possess, while others may not produce as much gas due to variations in their metabolic pathways or the presence of alternative pathways that do not result in gas production. Additionally, environmental factors such as pH, temperature, and the presence of other nutrients can also influence the amount of gas produced during lactose fermentation.
What is the Purpose of neutral red in maccconkey agar?
Neutral red serves as a pH indicator in MacConkey agar, which is a selective and differential culture medium for gram-negative bacteria. It helps to distinguish lactose-fermenting bacteria, such as Escherichia coli, from non-lactose fermenters. When lactose is fermented, acidic byproducts lower the pH, causing the neutral red to turn pink, indicating the presence of lactose fermenters. In contrast, non-lactose fermenters remain colorless or take on the color of the medium.
Is salmonella and shigella agar selective or differential?
Salmonella and Shigella agar (SS agar) is both selective and differential. It is selective because it inhibits the growth of most gram-positive bacteria and non-enteric gram-negative bacteria, allowing for the isolation of Salmonella and Shigella species. Additionally, it is differential as it contains indicators that differentiate between lactose fermenters and non-fermenters, with lactose fermenters producing pink colonies and Salmonella and Shigella typically forming colorless colonies.
Is MacConkey agar a chemically defined orn complex nedia and why?
MacConkey agar is classified as a complex medium because it contains a variety of ingredients, including peptones, bile salts, and crystal violet, which provide nutrients and inhibit the growth of Gram-positive bacteria. It is not chemically defined since the exact composition of the peptones is unknown and can vary. The primary purpose of MacConkey agar is to differentiate lactose fermenters from non-fermenters, with lactose fermenters producing acid that changes the color of the medium.
What are the types of enzymes likely to be used in washing powders?
The protease enzyme is used in some washing powders. The protease enzyme usually comes from bacteria like Bacillus licheniformis or Bacillus subtilis and can be produced in fermenters which hold many litres of culture medium and bacteria.
What are main types of fermenters?
Aerobic fermentation and anaerobic fermentation are two main types.
Types of fermenters and their use in large scale production of microbial products?
batch fermentors and continouse fermentors
What are fermenters for?
fermenters are used to make alcohol and other things like this
What are fermenters used for?
fermenters are used to make alcohol and other things like this
Are people foregut or hindgut fermenters?
Humans are not foregut or hindgut fermenters. These are special adaptations that occur in herbivores (such as horses and cows).
Is a horse a foregut fermenter?
All ruminants (cows, sheep, goats, etc.) and kangaroos are foregut fermenters.
What are tower fermenters?
Tower fermenters are simple in design and easy to construct. They consist of a long cylindrical vessel with an inlet at the bottom, an exhaust at the top, and a jacket to control temperature. They do not require agitation hence there are no shafts, impellers or blades.Tower fermenters are used for continuous fermentation of beer, yeast and SCP.
Are hingut fermenters and monogastrics the same thing?
No, they are different things.
What are the key differences between a bioreactor and a fermenter in terms of their design and functionality?
A bioreactor is a vessel used for a wide range of biological processes, while a fermenter is specifically designed for fermentation processes. Bioreactors are more versatile and can be used for various types of reactions, while fermenters are specialized for microbial fermentation. Bioreactors typically have more advanced control systems and monitoring capabilities compared to fermenters.
Why do some lactose fermenters produce gas bubbles whereas others do not?
Gas bubbles are produced by lactose fermenters as a byproduct of fermentation. Some lactose fermenters may produce more gas due to differences in the types and abundance of gas-producing enzymes they possess, while others may not produce as much gas due to variations in their metabolic pathways or the presence of alternative pathways that do not result in gas production. Additionally, environmental factors such as pH, temperature, and the presence of other nutrients can also influence the amount of gas produced during lactose fermentation.
Are all foregut fermenters ruminants?
Yes. Hind-gut fermentors are psuedo-ruminants.
A large amount of fermentation in hindgut fermenters occurs in the what?
Fermentation in hindgut fermenters occurs in the cecum and colon, where bacterial fermentation processes break down plant fiber and produce volatile fatty acids that can be absorbed by the animal for energy.
