Proximate Composition and Amino Acid Profile of Glossogobius matanensis, an Endemic Fish from Lake Towuti: Implications for Domestication

Syahran, Nursyahran; Kabangnga, Arnold; Andi Yusuf, Andi Yusuf; Heriansah, Heriansah; Lapong, Imran

doi:10.21608/ejabf.2025.424446.6592

Proximate Composition and Amino Acid Profile of Glossogobius matanensis, an Endemic Fish from Lake Towuti: Implications for Domestication

Document Type : Original Article

Authors

¹ Balik Diwa Institute of Maritime Technology and Business

² Balik Diwa Institute of Maritime Technology and Businessr

³ Pangkep State Agricultural Polytechnic

⁴ Balik Diwa Institute of Maritime Technology and Business, Makassar, Indonesia

10.21608/ejabf.2025.424446.6592

Abstract

This study aimed to analyze the proximate and amino acid profile of the endemic fish Glossogobius matanensis from Lake Towuti as a basis for the development of domestication and the utilization of a local protein source. Fish samples were collected from three different stations, namely Timbala Cape, Lengkobutanga Cape, and Bakara Cape, and then analyzed in the laboratory using standard AOAC methods. The proximate analysis results show a relatively high protein content (37.64–37.66%), a dominant moisture content (76.82–77.96%), low fat (1.80–1.98%), stable ash (3.41–3.45%), and consistent carbohydrates (1.83%). These findings confirm the characteristics of tropical freshwater fish, which are high in protein and low in fat, making them potential sources of nutritious food. The amino acid profile analysis reveals a complete composition of both essential and non-essential amino acids. The dominant essential amino acids are leucine (14,504.22 mg/kg), lysine (12,126.08 mg/kg), and valine (7,983.83 mg/kg), while the non-essential ones are dominated by glutamate (28,793.88 mg/kg) and aspartate (20,310.02 mg/kg). The high content of Branched-Chain Amino Acids (BCAA) indicates a crucial role in muscle growth, energy metabolism, and nutritional quality. The high glutamate and aspartate content also contributes to the umami flavor and the sensory quality of the fish meat. Overall, the research results confirm that G. matanensis possesses significant potential as a high-quality protein source and a candidate for the development of functional food. These data can serve as the scientific basis for sustainable conservation, domestication, and aquaculture programs for endemic Sulawesi fish to support local food security.

Keywords