No abstract

This study aimed to analyze the fatty acid composition of some potential fish oil originated from some production centers in Indonesia. Samples observed were softshell turtle oil, freshwater eel oil, shark liver oil, tuna oil, and lemuru oil. Fatty acid composition of the oil was analyzed and quantified using gas chromatography after being converted into FAME. Detected SFA, MUFA, and PUFA as ranged from 1.67-37.99%, 3.17-38.34%, and 0.70-34.99%. Oleic acid became predominant fatty acid in sofshell turtle oil, freshwater eel oil, and shark liver oil. Tuna oil was rich in DHA (24.56%), while lemuru oil was rich in EPA (14.36%).

Bulu babi merupakan salah satu sumber daya hayati dengan tingkat keanekaragaman jenis yang tinggi di Indonesia. Tujuan penelitian ini adalah menentukan komposisi kimia (kadar air, abu, lemak, protein, karbohidrat), profil asam lemak dan asam amino pada gonad bulu babi Diadema setosum, Echinothrix calamaris dan Echinothrix diadema. Profil asam lemak ditentukan dengan gas kromatografi dan asam amino dengan HPLC. Hasil penelitian menunjukkan bahwa gonad bulu babi D. setosum, E. calamaris dan E. diadema mengandung asam lemak total masing-masing yaitu 60,37%, 58,35% dan 58,55%. Kandungan asam lemak tertinggi yaitu asam palmitat sebesar 18,44% pada gonad D. setosum, 16,65% pada gonad E. diadema dan 16,55% pada gonad E. calamaris. Tiga jenis gonad bulu babi ini mengandung asam lemak tak jenuh omega-3 sebesar (3,16-3,99)%, omega-6 (9,21-13,88)%, omega-9 (3,95-5,01)%, EPA (2,3-2,89)% dan DHA (0,38-0,73)%. Asam amino yang terkandung di dalam gonad bulu babi ini yaitu 15 jenis yang terdiri atas 8 jenis asam amino esensial dan 7 jenis asam amino non-esensial. Kandungan asam amino total pada D.setosum, E. calamaris dan E. diadema adalah 13,41%, 10,49% dan 10,72%.<br />Kata kunci: Diadema setosum, Echinothrix calamaris, Echinothrix diadema, proksimat.

Tilapia is a farmed commodity of freshwater fish that can be processed into refined products, e.g. the tilapia fillets. The arising problem in the utilization of tilapia into processed products is its residual waste. The purpose of study is to obtain fish oil from tilapia by-products by wet rendering extraction; to characterize fish oil; to determine the optimum temperature and period of wet rendering extraction; and to determine the fatty acid composition of fish oil. Extraction temperatures were varied i.e. 25, 50, 70, and 90 °C. Extraction periods observed were 15, 25, 35, and 45 min. Quality parameters to evaluate the performance of fish oil were free fatty acid, acid value, peroxide, p-anisidine, total oxidation, and fatty acid composition analysis. The optimum temperature and period of wet rendering extraction were 70 °C for 35 minutes, with the highest yield of 6.44%. Fish oil yield which was obtained using Bligh and Dyer method was 8.12%. Fish oil extracted from wet rendering method contained 1.15% of EPA and 1.03% of DHA.

This research aims to analyze the nutritive value of flour head, liver powder and bone meal as by product of ABSTRAKPenelitian ini bertujuan untuk menganalisis kandungan gizi tepung kepala, tepung tulang dan tepung hati ikan yang merupakan limbah pengolahan ikan sidat Indonesia (Anguilla bicolor). Tepung limbah ikan sidat dibuat berdasarkan proses termal menggunakan drum dryer di pabrik penepungan ikan PT. Carmelitha Lestari di Bogor dan analisis proksimat untuk uji kimiawi dilakukan di Laboratorium Kimia Terpadu, IPB serta observasi langsung di PT Jawa Suisan Indah, Palabuhanratu Kabupaten Sukabumi pada bulan Oktober 2012-April 2013. Hasil analisis proksimat tepung kepala, tepung hati dan tepung tulang mengandung protein berturut-turut sebesar 61.78%, 53.92%, dan 41.01%; lemak sebesar 15.55%; 27.28%; 13.07%, karbohidrat sebesar 11.48%; 14.96%; 8.13%, kadar air sebesar 5.44%; 8.48%; 3.01%, kadar abu 12.95%; 3.62%; 37.49% dan serat kasar 1.33%; 0.04%; 1.11%.