Glycosyltransferase that possesses chalcone and flavonol 2'-O-glycosyltransferase activity. Converts phloretin to phlorizin (phloretin 2'-O-glucoside), a potent antioxidant. Possesses glycosyltransferase activity toward quercetin, isoliquiritigenin, butein and caffeic acid. Optimum pH is 6.75. Optimum temperature is 40 degrees Celsius. Belongs to the UDP-glycosyltransferase family.