What is milk bacteriology?

Milk always contain some bacteria derived from: An aseptically drawn raw milk may contain 10 bacteria to several thousand per ml. (ii) Milk equipment: Unsterile milking equipment is a major contribution of bacteria of milk.

How do you do a water bacteriological analysis?

The laboratory procedure involves making serial dilutions of the sample (1:10, 1:100, 1:1000, etc.) in sterile water and cultivating these on nutrient agar in a dish that is sealed and incubated. Typical media include plate count agar for a general count or MacConkey agar to count Gram-negative bacteria such as E.

What is water microbiology?

Water microbiology is the scientific discipline that is concerned with the study of all biological aspects of the microorganisms (bacteria, archaea, viruses, fungi, parasites and protozoa) that exist in water.

What is the bacterial content of milk?

The initial bacterial count of milk may range from less than 1000 cells/ml to 106/ml. High counts (more than 105/ml) are evidence of poor production hygiene. Rapid tests are available for estimating the bacterial quality of milk. Pasteurisation is the process used to destroy bacteria in milk.

What bacteria is found in air?

The number of bacteria found ranged from 0.013 to 1.88 organisms per liter of air sampled. Representatives of 19 different genera were found in 21 samples. The most frequently isolated organisms and their percent of occurence were Micrococcus (41%), Staphylococcus (11%), and Aerococcus (8%).

Why is bacteriological water testing important?

These microorganisms can cause minor or major gastrointestinal illness. They can cause severe illness in the young, elderly, and immunocompromised, so bacterial water testing is essential for protecting these groups.

What types of bacteria are found in water?

Here are seven types of bacteria to be concerned about as you fill up your next glass of water:

  • 1) Escherichia Coli. Escherichia Coli (also known as E.
  • 2) Campylobacter Jejuni.
  • 3) Hepatitis A.
  • 4) Giardia Lamblia.
  • 5) Salmonella.
  • 6) Legionella Pneumophila.
  • 7) Cryptosporidium.