Yes, I've read of several people reporting that you could use any natural source of sugar as long as it doesn't have ingredients which are harmful to bacteria you're trying to help multiply. Those that are less processed and retain most of their natural minerals are best. I'm no pro, though...
Actually, I'm trying a different approach with these teas. I mix a couple of cups of fertile forest soil, about 2 gallons of aquarium water, a couple of tablespoons of brown sugar or molasses, some fish fertilizer and mix it all up, then drench whatever I want to help out in the yard.
Why would I mess up a good thing? Well, I don't want to risk my tea going "bad" due to over brewing it or risk having a lack of oxygen ruining the batch and then making my plants sick. Sooooo I just pour it into the soil right after I mix it. The bacteria has lots of oxygen and will never go bad because of a lack of oxygen in the solution. Nature is free to do as she pleases with this sudden dose of beneficial forest soil bacteria, sugars, fish emultion, etc... I also dump kitchen scraps when I have them, in order to prolong the beneficial cycle. There are many risks associated with using tea like this, but I do see good results under my conditions. I cannot speak for others.
I've never had anything go bad yet and I see wonderful results with my plants. The earthworms have come back in disgusting levels. I tried this out after I had a batch of tea go bad- probably due to lack of oxygen and over brewing, where I suspect the levels of good bacteria peaked, then crashed because of exhausted sugar reserves and oxygen. I didn't know it went bad and after I poured it into several select plants, they started to look distressed. This is, of course, all IMHO.