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Find out the role of microbes in the following: Single cell protein (SCP) - Biology

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प्रश्न

Find out the role of microbes in the following:

Single cell protein (SCP)

संक्षेप में उत्तर

उत्तर

Single cell protein refers to micro-organisms (e.g., bacteria, yeast, filamentous fungi, algae) that can be commercially cultivated in a fermenter, processed in various ways, dried, or utilised as food or animal feed. The term SCP, however, is misleading because it implies that the protein is derived from a single cell. The biomass produced by unicellular and multicellular organisms is classified as SCP. Some common bacteria utilised in the manufacture of SCP are listed below:

  1. Bacteria (such as Methylophilus and Brevibacterium)
  2. Cyanobacteria (such as Spirulina)
  3. Yeasts (Saccharomyces cerevisiae, Candida utilis, etc.)
  4. Filamentous fungi (such as Fusarium graminearum)
  5. Algae (including Chiarella)

There are various advantages of utilising SCP as food. Several of them are listed below:

  • SCP contains a lot of high-quality protein but very little fat.
  • It can be manufactured in laboratories all year round, and its production is not climate-dependent.
  • The micro-organisms used in SCP manufacturing grow quickly and create significant amounts of SCP from just a tiny area of land.
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अध्याय 10: Microbes in Human Welfare - Exercises [पृष्ठ १९०]

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एनसीईआरटी Biology [English] Class 12
अध्याय 10 Microbes in Human Welfare
Exercises | Q 13.1 | पृष्ठ १९०

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संबंधित प्रश्न

Give examples to prove that microbes release gases during metabolism.


Name some traditional Indian foods made of wheat, rice and Bengal gram (or their products) which involve use of microbes.


Give the biological name of the following: 

A symbiotic nitrogen-fixing bacterium found in root nodules.


Name the microbes that help the production of the following product commercially:
Citric acid


Which of the following microorganism is used for production of citric acid in industries?


How is milk converted into curd? Explain the process of curd formation.


Write short notes on the following:

Brewer's yeast


Concentrations of which vitamin increases, while the milk is converted into curd by the process of fermentation:


Milk is converted to curd by:


Name a microbe used for the production of Swiss cheese.


Which type of food would have lactic acid bacteria? Discuss their useful application.


Which one of the following factors is responsible for activation of protoxin into active Bt toxin of Bacillus thuringiensis?


Home-made fruit juices are turbid, while the bottled ,fruit juices purchased from the market are clear. Give a reason for this difference.


Read the passage given below carefully and answer the questions that follow:

The bacterium Bacillus thuringiensis serovar israelensis (Bti) is commercially prepared in various formulations such as liquid, water dispersible granules, powders, and pellets. It is used as a larvicide all over the world due to its ability to produce a toxic protein that primarily targets the larvae of mosquitoes.

In Sweden, Bti has been applied on a large scale in the form of commercially available granular formulation Vecto Bac G (Valent BioScience, USA). The applications have taken place in the lower Dalalven River Area to control mass outbreaks of the floodplain mosquito Aedes sticticus.

  1. Why does the toxic protein kill the insects but not the bacterium?
  2. Can the formulation Vecto Bac G be used to eliminate the species of mosquito referred to above? Why?

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