Question:
Which of the following is the minimum water activity for toxin production by Clostridium botulinum?
Which of the following is the minimum water activity for toxin production by Clostridium botulinum?
Show Hint
C. botulinum: minimum a\(_w\) = 0.99.
Requires high moisture for growth and toxin production.
Requires high moisture for growth and toxin production.
Updated On: Aug 18, 2026
- 0.99
- 0.80
- 0.65
- 0.94
Show Solution
Verified By Collegedunia
The Correct Option is A
Solution and Explanation
Step 1: Understanding the Concept:
Water activity (a\(_w\)) affects microbial growth.
Different microorganisms have different minimum a\(_w\) requirements.
Step 2: Key Formula or Approach:
No specific formula.
Need to know the water activity requirements for Clostridium botulinum.
Step 3: Detailed Explanation:
Clostridium botulinum requires a very high water activity for growth and toxin production.
The minimum a\(_w\) for toxin production is 0.99.
Other microorganisms have lower a\(_w\) requirements.
Thus, 0.99 is the minimum water activity.
Step 4: Final Answer:
The minimum water activity for toxin production by Clostridium botulinum is 0.99.
Hence, the correct option is (A).
Water activity (a\(_w\)) affects microbial growth.
Different microorganisms have different minimum a\(_w\) requirements.
Step 2: Key Formula or Approach:
No specific formula.
Need to know the water activity requirements for Clostridium botulinum.
Step 3: Detailed Explanation:
Clostridium botulinum requires a very high water activity for growth and toxin production.
The minimum a\(_w\) for toxin production is 0.99.
Other microorganisms have lower a\(_w\) requirements.
Thus, 0.99 is the minimum water activity.
Step 4: Final Answer:
The minimum water activity for toxin production by Clostridium botulinum is 0.99.
Hence, the correct option is (A).
Was this answer helpful?
0
0
Top ICAR AIEEA Dairy Technology Questions
- As per legal standards (FSSR, 2011), the acidity (%LA) of chakka should not be more than:
- Which of the following food additive is permitted as preservative in paneer?
- Given below are four statements:
Statement (I) : Homogenisation breaks down fat globules in milk into smaller entities.
Statement (II) : Homogenisation breaks down fat globules and casein micelles in milk into smaller entities.
Statement (III) : Homogenisation slightly increases viscosity of milk.
Statement (IV) : Homogenisation improves the appearance of milk.
In light of the above statements, choose the most appropriate answer from the options given below. - With regard to temperature of operation, place the following unit operations in sequence in an increasing order of temperature:
(i) Sterilisation
(ii) Thermisation
(iii) Homogenisation
(iv) Bactofugation and
(v) HTST pasteurization.
Choose the correct answer from the options given below : - “Narampak” and “karapak” refer to varieties of sandesh with reference to which of the following parameters ?
View More Questions
Top ICAR AIEEA Food Safety Questions
- Which of the following is not used as sterilants for membranes ?
- Which of the following is the system that relies on process controls to minimize food safety risks in the dairy processing industry?
- Which of the following is a correct abbreviation for SCADA?
- Which of the following is a correct abbreviation for OPRP?
- Which of the following packaging forms is referred to as "3D packaging and food service article that is manufactured from an aqueous slurry of cellulosic fibres and formed into discrete products on screened moulds"?
View More Questions
Top ICAR AIEEA Questions
- Which of the following statements is false?
- Which of the following is an example of an inventory?
- According to Adam Smith, productivity gains could be brought about through .
- The supply curve for an artificially scarce good is .
- Which of the following would not be considered an opportunity cost of paid employment?
View More Questions