Ari, Widayanti dan Hanifah, Rahmi dan A, Hanif   Utilization of Bromelain Enzyme from Pineapple Peel Waste on Mouthwash Formula Against Streptococcus mutans.  Utilization of Bromelain Enzyme from Pineapple Peel Waste on Mouthwash Formula Against Streptococcus mutans.