by chang00 on Wed May 26, 2010 5:03 pm
Milk is technically a colloid, a mixture of fat and protein, and not a liquid. The cream and fat rise to the top in raw milk, and more difficult to froth, not due to the intrinsic "rawness" or increased fat, but due to lack of homogenization.
Raw milk and whole homogenized milk therefore will have same fat and protein content. The raw milk can be homogenized, but not pasteurized, and it will be easy to froth. Some supermarkets in California, for example, sell pasteurized, but not homogenized, "cream top" milk.
Raw milk however contains significantly increased bacteria, to include Salmonella, Listeria, and the dreaded E coli O157:H7, the organism responsible for the romaine lettuce E coli outbreak not too long ago. E coli O157:H7, even though pathological and detrimental in humans to cause hemorrhagic colitis and sometimes death, has a symbiotic relationship with the cow, and therefore will always be around. In the US, from 2000-2005, there were at least 473 raw milk related illness, with 7 reported deaths, mostly children. In addition to these confirmed illness cases, there were also outbreaks of rabies exposure as result of raw milk consumption.
Due to these reasons, in most states, raw milk is not readily available for sale directly to consumers, but thru certain legal exemptions thru co-op's.
Most food borne illness in the US are preventable. It is currently costing us about 150 billion yearly in health care cost, about $2000 per worker when someone gets sick.