Podcast
Questions and Answers
What is the main characteristic of proteins in milk?
What is the dominant class of proteins in milk?
How are casein proteins precipitated from skim-milk?
What are the characteristics of casein?
Signup and view all the answers
Why is freshly drawn milk considered amphoteric to litmus paper?
Signup and view all the answers
Which type of protein is precipitated from skim-milk at pH 4.6?
Signup and view all the answers
What acts as a stabilizing factor for the casein complex in colloidal suspension?
Signup and view all the answers
What is responsible for the 'hairy' appearance of the micelle surface?
Signup and view all the answers
What causes the precipitation of casein?
Signup and view all the answers
What protein constitutes about 50% of whey proteins formed in the udder?
Signup and view all the answers
What is responsible for the release of sulphurous compounds such as hydrogen sulphide at high temperatures?
Signup and view all the answers
What is not affected by renneting?
Signup and view all the answers
What protein may be considered to be the typical whey protein and is present in milk from all mammals?
Signup and view all the answers
What prevents the approach and interactions of the casein molecules due to its highly charged C-terminal?
Signup and view all the answers
Which of the following is considered a biological hazard in raw milk?
Signup and view all the answers
What is the most common source of chemical contamination in milk?
Signup and view all the answers
What are the key sources of milk contamination from physical hazards?
Signup and view all the answers
When does contamination typically occur during milk production?
Signup and view all the answers
Which type of hazard includes allergens as a potential source of contamination?
Signup and view all the answers
What is the primary cause of physical contamination in raw milk?
Signup and view all the answers
What is the primary reason for discarding the foremilk in healthy cows?
Signup and view all the answers
In diseased cows with mastitis, what is the potential bacterial count in milk from infected quarters?
Signup and view all the answers
What contributes to the contamination of the surface of teats and udders in cows?
Signup and view all the answers
What is an effective method to reduce the numbers of bacteria in milk contributed from soiled teats?
Signup and view all the answers
Which requirement should teat disinfectants meet according to Video 1?
Signup and view all the answers
What is the primary reason for discarding foremilk in healthy cows according to the text?
Signup and view all the answers
What are common organisms associated with bedding materials that contaminate the surface of teats and udders?
Signup and view all the answers
What should teat disinfectants not do according to Video 1?
Signup and view all the answers
What type of bacteria are commonly found on teat surfaces?
Signup and view all the answers
What is an effective method to reduce bacterial numbers in milk contributed from soiled teats?
Signup and view all the answers