Ekstraksi dan karakterisasi enzim tripsin dari jeroan ikan bandeng (Chanos chanos) hasil purifikasi parsial Extraction and characterization of trippsin enzyme from milkfish (Chanos chanos) partial purification result

Rosella Silaban, Tati Nurhayati, Asadatun Abdullah

Abstract

Fish offal is known for its high content of digestive enzymes, especially proteinases such as trypsin. The characteristics of fish trypsin are influenced by the species and habitat. Milkfish offal is part of the fish digestive tract and has a neutral pH, so it is a potential source of enzymes, especially trypsin. Fish offal can be an alternative to commercial trypsin enzymes derived from pork and beef. The purpose of this study was to determine the characteristics of trypsin enzyme from milkfish offal with ammonium sulfate fraction. The research process began with the extraction of trypsin enzyme from milkfish offal, followed by fractionation with ammonium sulfate (0-80%). Temperature, pH, the effect of metal ions, the effect of NaCl on enzyme activity, and reaction kinetics were all used to determine the best fraction. Enzyme activity was measured using the substrate N-α-benzoyl DL-arginine-p-nitroanilide (BAPNA). The results showed that the crude trypsin extract had an activity of 0.117 U/mL. The highest trypsin enzyme activity was in the 20-30% ammonium sulfate fraction, which was 0.295 U/mL. The enzyme worked best at a temperature of 50°C and pH 6. The metal ions ZnCl₂, MnCl₂, CuCl₂, NaCl, and CaCl₂ inhibited the trypsin enzyme activity. Trypsin activity in 5–30% NaCl increased to a ratio of 10%, which was 0.249 U/mL.  The Vmax value of this enzyme was 0.285 mmol/s, and the Km value was 0.374 mM.

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Authors

Rosella Silaban
Tati Nurhayati
nurhayati7870@gmail.com (Primary Contact)
Asadatun Abdullah
Silaban R., Nurhayati T., & Abdullah A. (2025). Ekstraksi dan karakterisasi enzim tripsin dari jeroan ikan bandeng (Chanos chanos) hasil purifikasi parsial: Extraction and characterization of trippsin enzyme from milkfish (Chanos chanos) partial purification result. Jurnal Pengolahan Hasil Perikanan Indonesia, 28(1). https://doi.org/10.17844/jphpi.v28i1.60565

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