I'm in agreement with Eric here. I live in Australia and am lucky to be able to give my gliders real acacia tree branches. The trees here are certainly different to those that are used for the commerical production of gum arabic(acacia gum). The two worrying things to me about the use of this is that this product is being harvested in third world countries and then processed in countries like China for export around the world for commerical uses includng painting, photography, print making etc.
Now I steer clear of any food item that has been commercially processed in places like China. Their level of quality control just isn't up to our standards and it has been proven a lot lately through the world press, that substitution of fillers and shortcuts to quality control is often very evident. The other interesting thing, is it appears the public cannot buy imported acacia gum for personal use here in Australia and it is only imported in from China etc for commerical use by big companies to manufacture other items. I asked several health food shops about being able to buy locally produced wattle gum from Australian acacias and was told this was not available as local trees produce a different product. To me that says it all.
Another side to feeding acacia or wattle gum to captive gliders is that how their diets have changed their actual digestive systems. In the wild, when gliders eat wattle gum, the wattle gum has chemical properties (including tannin) which make it difficult to digest and in a huge majority of animals, it is considered indigestible. The sugar glider has an enlarged caecum and distinctive gut florae and it is believed this assists microbial fermentation of the wattle gum. Fermentation is vital as the gliders do not have the enzymes to break down wattle gum. I have been told by some vets here that feeding of products like yoghurt etc can subtly change the gut florae in the glider's digestive system. Whilst this has no obvious effect on the glider, it may possibly affect their ability to handle certain health issues and the digestion of food they would be able to handle in the wild . My gliders have never been fed yoghurt of any sort as I like to be able to feed as much native flora to them as I can. Interestingly here in Australia no glider diet includes yoghurt.
Yoghurt however is very popular in USA for gliders and so it makes me wonder whether the gliders over there possibly lack the ability to even ferment and digest true wattle gum properly. Food for thought!
I feed bee pollen, a tiny sprinkle once or twice a week as per the recomendation of the Healesville Sanctuary. If you purchase bee pollen again make sure its from a good quality source. Sadly again, China is a big producer of bee pollen and it's usually the source of a lot of the bee pollen available on line or in many stores. Companies buy it in bulk from China and then repackage into smaller lots of resale to the public and often try and pass it off as a locally made product so check the labels carefully. I use pure australian pollen. There are different types but I get one that is produced here in Victoria from a region where gliders live but that's just me being able to do that. Probably any US or Aus made bee pollen would do but be wary of the source of any pollen that may be a chinese import.