Pengaruh Karagenan dari Rumput Laut Kappaphycus alvarezii terhadap kesegaran Ikan Gurami (Osphronemus gouramy)

Gourami fish with the latin name Osphronemus gouramy is a freshwater fish that has high economic value. Fish has a fairly high water content so that the quality and freshness of the fish decreases because it rots easily. Efforts to avoid spoilage or deterioration in quality of fish are usually done by refrigeration, however refrigeration still has limitations, namely the relatively short shelf life of the meat. The aim of this research is to determine the effect of soaking Kappaphycus alvarezii seaweed carrageenan extract, as well as determine the optimal dose of extract to be used to maintain the freshness of Gourami Fish. The methods used include organoleptic value tests, Total Volatile Base Nitrogen (TVB-N) test, and Total Plate Count (TPC) test which are stored for 0, 3, and 6 days at 4 o C. The results showed that carrageenan extract had a very significant effect on organoleptic value and TVB-N, but had no effect on TPC test. Based on the result of this research, it can be concluded that the optimal dose of carrageenan to maintain the freshness of gourami fish was 500 ppm.