Oops. Seems most cabbages have almost zero lactoseso the lactic comes from malo-lactic and other pathways it seems, but there is very little maltose. It was years ago i researched cabbage so i must look to it again. There are simple sugars mainly so they must be combined first.
It's the simple sugars that make it an attractive food for me so i'll have to find what it is that people react to if not lactose...