EKSTRAKSI GELATIN KULIT IKAN TUNA DENGAN PROSES BASA (NaOH)
DOI:
https://doi.org/10.35800/mthp.4.2.2016.14054Keywords:
Ekstraksi Gelatin (NaOH)Abstract
Tuna fish skin is an untapped waste properly and it contains collagen that can be made of gelatin manufacture of gelatin from fish skin tuna using alkaline process (NaOH) , with the object of knowing the yield of fish skin gelatin tuna (Thunnus albacares) were processed using alkaline (NaOH) .Tuna fish skin gelatin extraction soaking in an alkaline solution (NaOH) at a concentration of 0.3% and 0.6% for 48 hours, then the fish skin is washed with running water till a neutral pH (6–7) and extracted with distilled water at 60ºC.degree for 3 hours. gelatin extract is filtered by the filter cloth and dried in an oven at 60ºC for 2 days in order to obtain a sheet of gelatin. The extraction of gelatin is then tested the water content and pH, the results of analysis by immersion base solution at a concentration of 0.3% for 3 hours and extracted at a temperature of 60ºC to produce gelatin at a concentration of 5.96% and 4.14% 0.6 produces gelatin. For analysis of the water content at a concentration of 0.3% (5.67%) and a concentration of 0.6% (5.17%), the pH value obtained in tuna fish skin gelatin treated with alkali (NaOH) 0.3% (5,98) while for the 0.6% concentration obtained pH value 6.81. results gelatin by extraction using an alkaline solution (NaOH) 0.3% more to produce higher yields.
Keyword: Gelatin extract (NaOH).
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kulit ikan tuna merupakan limbah yang belum dimanfaatkan dengan baik dan didalamnya mengandung kolagen sehingga dapat dibuat gelatin. pembuatan gelatin dari kulit ikan tuna dengan menggunakan proses basa (NaOH), dengan tujuan penelitian mengetahui rendemen gelatin kulit ikan tuna (Thunnus albacares) yang diproses menggunakan basa (NaOH). Ekstraksi gelatin kulit ikan tuna dilakukan perendaman dalam larutan basa (NaOH) dengan konsentrasi 0,3% dan 0,6% selama 48 jam, kemudian kulit ikan dicuci dengan air mengalir sampai pH netral (6–7) dan diekstraksi dengan akuades pada suhu 60ºC selama 3 jam. ekstrak gelatin disaring dengan kain saring dan dikeringkan dalam oven pada suhu 60ºC selama 2 hari sehingga diperoleh lembaran gelatin. hasil ekstraksi gelatin ini kemudian diuji kadar air dan pHnya, hasil analisis dengan perendaman larutan basa pada konsentrasi 0,3% selama 3 jam dan diekstraksi pada suhu 60ºC menghasilkan gelatin 5,96% dan pada konsentrasi 0,6 menghasilkan gelatin 4,14%. Untuk analisa kadar air pada konsentrasi 0,3% (5,67%) dan konsentrasi 0,6% (5,17%), nilai pH yang diperoleh pada gelatin kulit ikan tuna dengan perlakuan basa (NaOH) 0,3% (5,98) sedangkan untuk konsentrasi 0,6% nilai pH yang diperoleh (6,81). Hasil gelatin dengan ekstraksi menggunakan larutan basa (NaOH) 0,3% lebih menghasilkan rendemen yang lebih tinggi.
Kata Kunci: Ekstraksi Gelatin (NaOH).
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