The giant Kraft has a post in its website asking for inputs that will help them develop a biodegradable gum base. Those inputs can be “novel and inventive ingredients, processing methods and technology solutions”
You can read more on:
http://www.kfcollaborationkitchen.com/EN/What/Pages/NeedInformation.aspx?bid=E50EFBE8-E5E4-4044-9C79-4ECA806A84E6
It has been many years that the main players in the chewing gum field are researching in this direction, with many filed patents but limited results in the market. As the issue become hotter and hotter, maybe we can really see something relevant in the market soon….