1H-NMR (D2O, 400MHz): quite a lot of (what I bet are) sugars, fatty acids, and I have no clue about the aromatic stuff. (Edit: the aromatic stuff are Niacin, Riboflavin, and Thiamin, according to wikipedia)
the gCOSY is even worst, I spent only 3 minutes on that, so, sorry if it’s not informative at all (a good TOCSY would have been amazing).
Anyway, the most interesting things (or at least unexpected) was that the Marmite water solution was extremely foamy. A couple of drops of the foamy solution from the NMR tube to the microscope glass and this is what happened next:
P.S. I hate Marmite, I tried the first time last year in New Zealand as breakfast…. As I’m used to “sweet” breakfast, I originally thought it was some kind of chocolate…. Stupid, stupid me. That was, let’s say a surprise (and not a good one). A couple of days later I finished swearing against the black tar from the hell, and I discover that is not that bad with bread and cheese, maybe with ham….. but for God sake…. NOT FOR BREAKFAST!!!!