Biology/Microbiology
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Question
Why is sterile skim milk used in casein hydrolysis?
Hi Candace: Thanks for your question.
Casein is the protein in milk, so it provides a source of nutrients for the bacteria and is used to detect the casein hydrolysis enzymes.
Are you asking why skim/whole milk is used? I think it's because we can get powdered skim milk to make the medium to grow the bacteria. Also skim milk powder is more stable without the milkfat.
Does this answer your question? If not, just write back.
FM Rollwagen, PhD
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Answers by Expert:
Florence M Rollwagen
Expertise
I can answer questions in biology, microbiology and immunology on the undergraduate or graduate level. I can also address medical and health concerns regarding alternative medicine, autoimmune diseases (lupus, MS) liver disease and intestinal problems.
Experience
I have over 20 years experience in research and teaching at the medical/graduate level, and 5 years teaching college biology and microbiology. My expertise is in microbiology and immunology, specifically the biology of cytokines and soluble immune response modifiers. I also carried out original research in blood substitutes and shock/trauma.
Organizations
American Association of Immunologists (AAI)
American Association for the Advancement of Science (AAAS)
Publications
Journal of Experimental Medicine, Journal of Immunology, Cytokine, Shock, Experimental Hematology
Education/Credentials
BS biology 1966
MS biology 1968
PhD immunology 1979
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