Inding, Gusmayadi dan Priyanto, Priyanto The Effect of Concentration Ratio of Gelatine and Polyvinylpyrrolidone as Binders on the Physical Properties of Red Ginger (Zingiber officinale Rosc.) Extract Lozenges. The Effect of Concentration Ratio of Gelatine and Polyvinylpyrrolidone as Binders on the Physical Properties of Red Ginger (Zingiber officinale Rosc.) Extract Lozenges.