“ENZIMATIC PRODUCTION OF CHITOSAN FROM WASTE OF RAJUNGAN CRAB SHELL AND IT’S APLICATION IN CHOLESTEROL REDUCTION BY IN VITRO TEST”. 2019. Jurnal Akta Kimia Indonesia (Indonesia Chimica Acta) 10 (1): 25-34. https://doi.org/10.70561/ica.v10i1.6404.