Sidabalok, I. , Salihat, R.A. and Astri Pujilillah 2021. THE USE OF PINEAPPLE WASTE EXTRACT ON THE EXTRACTION OF GELATIN FROM TUNA SKIN (Thunnus albacares). JURNAL KATALISATOR. 6, 2 (Nov. 2021), 197–210. DOI:https://doi.org/10.62769/katalisator.v6i2.642.