Nilfalasiel wrote...
I've seen this mentioned before: dextro-DNA based stuff is supposed to taste sweet. But how would anybody know...?
The sugars we eat are based on a dextro-chirality. If you think about how the body identifies and processes various molecules, it is possible that it's designed to recognize any dextro-molecule as it recognizes sugar. Hence, Garrus tastes like liquid sugar. Maybe.
The body's identification of molecules is probably where the idea of possible toxicity or anaphylactic reaction plays into the whole thing as well. If the molecular structure of something can't be recognized, it is an unacceptable foreign influence and the body will react to be rid of it. In theory. Maybe.
Nobody knows why life on Earth is predominatly levo-amino based. There are exceptions to the rule as well, but then we're talking bacteria levels of exceptions and bacteria
always provides exceptions to the rules. Outside of amino acids, quite a few molecules exist in both its dextro and levo forms. Take various medicines, there will be both chiralities of a certain drug chemical, but the body only processes one form.
But really, I don't know. Just long hours playing with my stupid molecular model set so that I could process molecules that were mirror images of the other. It was not my strong suit in Organic Chemistry.