B12 Fortified foods and soy milk - VeggieBoards
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#1 Old 02-09-2011, 02:18 AM
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Hey.

So first off I should say that I haven't posted on this board in a number of years. Secondly I should say that I've been vegan for 6 and a half years. Thirdly I should say I've done a lot of research on veganism.

BUT...

The other day I was having a discussion with a meat eater. He brought up the B12 argument and I told him I drink fortified soy milk and also take a suppliment. He asked how they do it and I was pretty stumped. I felt kind of dumb so I thought I'd make a triumphant return to the board to get an answer. What is the process? Where does the b12 come from? I tried looking it up but couldn't find any answers.

Sorry if this is a painfully stupid question or if it's been answered 100 times before.
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#2 Old 02-09-2011, 02:50 AM
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I figured it was synthesized but I looked it up on Wiki for more info. Interesting read: http://en.wikipedia.org/wiki/Vitamin_B12

Quote:
Neither plants nor animals are independently capable of constructing vitamin B12.[4] Only bacteria have the enzymes required for its synthesis. The total synthesis of B12 was reported by Robert Burns Woodward[5] and Albert Eschenmoser in 1972,[6][7] and remains one of the classic feats of organic synthesis. Species from the following genera are known to synthesize B12: Aerobacter, Agrobacterium, Alcaligenes, Azotobacter, Bacillus, Clostridium, Corynebacterium, Flavobacterium, Micromonospora, Mycobacterium, Nocardia, Propionibacterium, Protaminobacter, Proteus, Pseudomonas, Rhizobium, Salmonella, Serratia, Streptomyces, Streptococcus and Xanthomonas.
Industrial production of B12 is through fermentation of selected microorganisms.[8] Streptomyces griseus, a bacterium once thought to be a yeast, was the commercial source of vitamin B12 for many years.[9][10] The species Pseudomonas denitrificans and Propionibacterium shermanii are more commonly used today.[11] These are frequently grown under special conditions to enhance yield, and at least one company, Rhône-Poulenc of France, which has merged into Sanofi-Aventis, used genetically engineered versions of one or both of these species.


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#3 Old 02-09-2011, 12:38 PM
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Man, I did like 10 different google searches and didn't check wikipedia. Thanks!!
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#4 Old 02-09-2011, 08:02 PM
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yes, Thanks for the Q & the A, as I also wondered.
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