The specification provides methods for extracting xyloglucans from fruit, especially from firm fruit such as cranberries, through a sequential extraction procedure. The positioning system comprises a linear guide arrangement for enabling a linearly guided motion parallel to said axis, wherein the positioning unit is operatively connected to said guide arrangement. The metal components in said container are compressed so as to form a billet of distorted multicolored metal. The controller controls the rotations of the brushless DC motor and obtains a target drive signal of the brushless DC motor externally and a detection signal from the rotation detector and outputs a signal to the driver. The treatment layer is formed by applying direct-current pulse voltage to the substrate, and generating plasma in an atmosphere that contains argon gas and hydrogen gas.