By Elaine WATSON Elaine WATSON, 14-Aug-2013. The FDAâs decision to give the thumbs up to spirulina as a source of blue color in candy and gum finally gives US firms a natural alternative to artificial FD&C Blue #1 ('brilliant blue') and opens up new opportunities in natural greens, say color suppliers.
Actually I just looked it up to make sure and yes biotin is created in the large intestine by bacteria. Also vitamin K is as well, but vitamin K is a fat soluble vitamin where biotin is water soluble. Source(s): http://www.vivo.colostate.edu/hbooks/pat... Plus having CF makes me take a lot of vitamins plus its an interesting topic to me.
Fat-Soluble Vitamins. The fat-soluble vitamins are A, D, E, and K. Fat-soluble vitamins are absorbed in the lymph, transported in the blood, and can be stored in the liver and fatty tissues for use as needed. The fat-soluble vitamins are the ones you really need to be careful about.