Grape material is processed to yield a grape extract high in concentrated polyphenols, with ORAC values exceeding at least about 10,000 \u03bcmol TEg. The BMS may reduce costs by stably supplying power to an insulating unit in a power-saving mode even when an isolator has no built-in direct current -DC converter. The loop can be divided into loop parts B1 and B2. The efficacious result may be the desired or best result for the procedure. A wireless communication system of the present invention allows the signal phase of the frequency domain in a receiving station to be continuous before and after the timing adjustment processings by controlling a signal sequence in a transmission signal after conversion in the time domain in synchronization with the timing adjustment processing. The discontinuity detector restarts the decoder when detecting the discontinuity between the programs.