Dharmawati, S. (2025) “Characteristics of Natural Collagen of Freshwater Snail Flesh (Pomacea paludosa) Extracted with Bromelain Enzyme and Acid-Hydro-Extraction Method”, Tropical Journal of Natural Product Research (TJNPR), 9(3), pp. 933–941. doi:10.26538/tjnpr/v9i3.7.