Materials derived from cinnamon can be administered orally to humans or animals for the purpose of controlling blood glucose as well improving glucose tolerance. The apparatus includes an image processor configured to process an image corresponding to the matrix code symbol. The first oil return flow passage is designed in the form of a siphon comprising a pipe section which immerses into a siphon reservoir comprising an overflow and the second oil return flow passage ends in the siphon reservoir downstream of the check valve. A power supplying control signal generation circuit is also provided so as to generate a power supplying control signal for controlling operation of the power supplying circuit.