I mean, if it’s being super efficient with all of the water, most of the body will have been gassed into methane and such, a little lipid slick here and there, and only the inorganic mineral contents will be visible. Surely their technology can handle a little rapid putrefaction. Why leave carbonyls intact if you can do a nucleophilic attack and knock off oxygen (as a hydroxyl, sure) to be buffered by a little acid into water?

…calm thy tits, gentlemen, I’m joking…

spoiler

because we don’t use acid, that’s barbaric. Lye is much more appropriate! Only 2% of the original body mass is left as ‘dry’ material afterwards. Much much efficient!