I'm looking for a way to extract vitamins out of common food sources of, well, vitamins.
Let's take, as an example, Vitamin A which is commonly found in carrots. A carrot (weighing around 60g) should contain around 500µg of retinoic acid (RA). RA is not soluble in water so in principle if I just dehydrate the carrot (which has around 50g of water) I would be left with around 10g of matter that still contains those 500µg of RA. I think that, with this simple procedure, I would be concentrating the amount of RA in my sample.
But maybe (surely) there are better ways to achieve this, to extract/purify a particular vitamin from food. Any ideas?
Also, some Vitamins are, instead, soluble in water, so we would need to apply another method for those.
And, finally, I would like to accomplish this using simple (household, if possible) techniques. It doesn't matter if I don't reach 100% purity, not even 1%, but if I can extract a 1g sample from my original carrot that has most of the RA still in it that would be huge.