Effect of spring oilseed rape crop density on plant root biomass and ... by Cepuliene, Rita; Marcinkeviciene, Ausra; Velicka, Rimantas; Kosteckas, Robertas; Pupaliene, Rita / Estonian Journal of Ecology.
A study in Washington State gathered 154 first to fifth graders from two elementary schools. The students were given four gummy bears made with either xylitol or maltitol (types of sugars used in many types of sugarless chewing gum) three times a day during school hours. All were checked for plaque and bacteria in their mouths at the start of the study and six weeks later.
THE GUM on British stamps is composed of polyvinyl alcohol and dextrin. The dextrin is derived from starch (e.g. potato) and the vinyl alcohol is a synthetic derived from petroleum. The gum used on ready-stamped stationery items is a blend of polyvinyl acetate and dextrin with the exception of aerogrammes, where the gum is a blend of polyvinyl acetate and polyvinyl alcohol.