I would love to figure the "going bad" aspect of this. I will pasteurize my raw milk, even though I do understand there are benefits to using it raw, but the downside, particularly here in the Philippines are just too drastic to risk it. I have to no control over the dairy practices and while they are very nice people, that won't make some that gets sick better.
Now, even my UHT heavy cream goes bad after awhile. I don't use it a lot since my electric ice cream machine broke, but occasionally I get tired of coffee mate in my coffee and long for something that's actually dairy to mix in. Milk is a bit thin, even the whole cream milk. If I can get the local dairy milk and its resulting components, such as cream to be fairly stable, I can make a batch of half and half for my coffee, which will then be the envy of many of my coffee swilling friends from North America and Europe.
And if there is a simple way to keep the milk good for a week or so, similar to the milk we bought in the USA and threw in the fridge, that would benefit the dairy here since they often have excess milk. The expats often won't buy it, preferring a more stable if less tasty UHT product.
I won't be adding HP to milk I want to make cheese with, but if a few drops per liter is safe for human consumption and along with proper storage, would provide a reasonable shelf life, I will check it out. However, a quick search on the internet had me bumping into a reference where the FDA has a maximum of Hydrogen Peroxide in for human consumption at 5 PPM or five parts per million. So ...
ppm = (mass of solute / mass of solution) x 10^6 <-- from Answers.com
3.00 = (mass of solute / 2000 g) x 10^6
3.00 / 10^6 = mass of solute / 2000 g
2000(3.00 / 10^6) = mass of solute
0.00600 g = mass of solute (Answer)
So we would have something along the lines of 2000(5.00 / 10^6) which, if my handy dandy calculator is correct, would be about five drops in 50 liters. One drop of hydrogen chloride per ten liters or 0.05 milliliters. We are getting down where it is too small for my old eyes to measure.
So it goes.