Raw” milk (untreated milk) and even fruit juice can be dangerous to…

Question Answered step-by-step Raw” milk (untreated milk) and even fruit juice can be dangerous to… Raw” milk (untreated milk) and even fruit juice can be dangerous to your health and cause zoonotic infections such as infections by Listeria monocytogenes (milk) and EHEC (fruit juice such as apple juice). Pasteurization can be used to minimize the problem.  The book refers to HTST whereby the fluid such as milk is exposed to 72ºC for 15 seconds while passing through thin tubing. Another method, no longer mentioned in the text, has relatively large volumes of fluid exposed to temperatures of 63ºC and times of 30 min.  How do these 2 pasteurization conditions demonstrate the characteristic of equivalent treatments? (p.182, ed.12; p.184, ed.13)Does pasteurization using either of the two conditions above sterilize the milk or are there usually some living vegetative cells present in the milk after pasteurization?  If there are bacteria present after pasteurization*, why or why not do these bacteria cells cause serious health problems?  If there are bacteria present after pasteurization, does it affect the shelf life of the milk?  Why or why not?*Note: We are also assuming that new bacteria were not introduced into the milk after pasteurization by improper handling of the milk. 1)b)How do these two conditions including HTST compare to those of an autoclave?  In your answer, include the conditions used for autoclaving fluids and other materials, i.e. what temperature is the autoclave typically set at, etc.  This technique uses moist heat for materials that can tolerate exposure to high heat and moisture. (To think about: Would you autoclave milk prior to consumption?)  How does moist heat kill microorganisms and destroy spores?  (p.180, ed.12; p.182, ed.13)  Biology Science Microbiology BIO 310 Share QuestionEmailCopy link Comments (0)