After lots of hours scavenging for any paper on the chemical contents of the gum besides compounds without nitrogen. I found a paper where they found many amino acids[1], but sadly there wasn't any tryptophan, which was speculated to disintegrate during the detection process by another paper(which I can't seem to find now). So, the gum contains more than polysaccharides, specifically nitrogen containing compounds.
If there was dmt or other psychoactive substance in acacia gum, people would've probably done extraction by now.
[1] Gum Arabic: More than an Edible Emulsifier