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Background and aim: Snakehead (Channa striata) contains protein 25.5% including albumin. C. striata contains approximately crude albumin 6.22% and the crude albumin extract has been used as wound healing supplement widely in Indonesia. Recently, the albumin extract has been produced in powder form. Albumin is classified as a globular protein, and the properties have been influenced by temperature and pH value. Therefore, coating material is needed to protect albumin, to stabilize the properties from protein denaturation and to improve the end-product quality. The aim of this study was to determine the effect of adding coating materials such as carboxymethyl cellulose (CMC), chitosan, alginate and pectin towards quality of crude albumin powder made from C. striata. Methods: The method used in this study was experimental method. CMC, chitosan, pectin and alginate have been added to crude albumin extract with five differences concentrations, respectively. The concentration of coating material were CMC 3%, chitosan 2%, alginate 2%, and pectin 1%. The parameters of this experiment were albumin content, protein content, moisture content, lipid content, ash content, water absorption and yield. Results: The results showed that albumin content was 8.09% (CMC), 7.29% (chitosan), 7.37% (alginate) and 6.73% (pectin). CMC 3% showed the highest albumin content among others coating materials. The nutritional value of albumin powder with additional CMC 3% was albumin content 8.08%, protein content 32.55%, moisture content 5.47%, ash content 3.30%, lipid content 4.91%, water absorption 2.37% and yield 5.99%. The lightness of the best treatment (CMC 3%) was 26.30 ±0.57. The amino acid analysis from the albumin powder coated by CMC 3% showed that this product contained amino acid are glutamic acid, aspartic acid, leucine. Moreover, the fatty acid profiles showed that the crude albumin powder contained oleic acid and dokosadienoic acid. In conclusion, additional CMC 3% towards crude albumin powder improved the quality of final product. Conclusions: Optimal snakehead fish albumin powder was obtained at a concentration of 3% CMC coating addition with qualities including albumin content of 8.08%, water content 5.47%, ash content 3.3%, protein content 32.55%, fat content 4.91 %, 2.37% water vapor absorption and 5.99% yield. In the brightness parameter, the value of L * 23.35 is obtained. The highest amino acid profiles are glutamic amino acids and aspartic amino acids. The highest fatty acid profiles are linoleic and lauric fatty acids.

Milkfish is one of the most cultivated fish species in Indonesia because these fish have a high tolerance to the various environmental conditions of tropical waters and are resistant to many pests and diseases. This preliminary research was conducted to analyze the amino acid composition contained in milkfish meat and its product. 20 fresh milkfish were obtained from ponds in Sidoarjo, East Java, in September 2020. Amino acid composition and protein content were analyzed. Based on its protein content, milkfish has been classified as a source of high protein. The amino acid profile of milkfish consists of approximately 17 types of amino acids. Glutamic acid, the amino acid present in the highest concentration, makes milkfish very popular.

Kegiatan Pengabdian kepada Masyarakat ini bertujuan untuk meningkatkan pengetahuan dan keterampilan pelaku UMKM di Desa Gajahrejo Kecamatan Gedangan Kabupaten Malang melalui diversifikasi pengolahan ikan tuna (Thunnus sp.) dalam bentuk se’i tuna dengan fortifikasi ekstrak daun jati. Tujuan kegiatan ini yaitu untuk meningkatkan pengetahuan dan keterampilan serta menumbuhkan sikap positif pelaku UMKM di Pantai Bajul Mati, Desa Gajahrejo, Kabupaten Malang terhadap usaha diversifikasi pengolahan produk berbahan ikan tuna. Metode yang digunakan pada kegiatan pengabdian kepada masyarakat ini adalah metode PALS (Participatory Action Learning Syatem) dengan cara pelatihan langsung yang meliputi pengolahan ikan menjadi se’i tuna dengan penambahan ekstrak daun jati sebagai pewarna alami untuk mengubah tampilan produk se’i tuna menjadi lebih menarik dan pengemasan produk olahan se’i tuna. Hasil kegiatan ini menunjukkan bahwa kelompok mitra telah mampu dalam melakukan pengolahan ikan tuna menjadi produk se’i tuna dengan adanya tambahan fortifikan berupa ekstrak daun jati sebagai pewarna alami. Mitra juga telah mampu mengemas produk se’i tuna menggunakan sealer dan vacuum sealer.

Kitosan adalah polisakarida alami hasil dari proses deasetilasi dari yang juga memiliki potensi digunakan dalam food packaging seperti edible film dan edible coating karena memiliki polimer hidrokoloid yang bersifat antioksidan, antimikroba, dan merupakan barrier yang baik terhadap oksigen. Salah satu kandungan kayu manis adalah minyak atsiri. Minyak atsiri dapat ditambhakan pada edible coating sebagai antimikroba. Tujuan penelitain ini adalah untuk mengetahui pengaruh penambahan cinnamon essential oil pada edible coating kitosan terhadap umur simpat fillet ikan kakap merah. Rancangan percobaan pada penelitian ini menggunakan RAL (Rancangan Acak Lengkap sederhana. Fillet ikan kakap merah diberikan tiga perlakuan yaitu: tanpa coating, coating tanpa penambahan cinnamon essential oil , dan coating dengan kombinasi 1.5 gram kitosan dan 1.5 % cinnamon essential oil. Hasil penelitian menunjukan Penambahan cinnamon essential oil pada edible coating kitosan memberikan pengaruh terhadap kualitas fillet ikan kakap merah selama masa penyimpanan dilihat dari parameter TPC, TVB dan pH. Fillet yang dilapisi dengan edible coating kitosan dengan penambahan cinnamon essential oil masih layak dikonsumsi sampai dengan penyimpanan hari ke 9 dengan nilai TPC Log 5,7, TVB 30,33 mgN/100g dan pH 6,53.

Fish oil by-product is generally of poor quality and therefore cannot be directly used, so it must be purification. Fish oil purification can be done by treatment centrifugation and addition adsorbent. The purpose of this study is to determine the best treatment addition adsorbent to improve the quality of fish oil. Fish oil purification is done by treatment using centrifugation and then adsorbed by the adsorbent. The lowest peroxide value on providing a combination of adsorbent attapulgite bentonite, amounting to 2.250 meq/kg. The lowest P-anisidine value on providing a combination of adsorbent attapulgite bentonite was 0.348 meq/kg. The lowest value of the total oxidation on addition adsorbent attapulgite bentonite combination of 4.848 meq/kg. Lowest value of free fatty acids in the addition of adsorbent attapulgite, bentonite and zeolite gradually, by 8.742%. The best transmission value obtained in combination treatment addition of synthetic adsorbents attapulgite and bentonite in fish oil first centrifuged.

Parameter of fish oil quality could be observed from an omega-3 fatty acid content, antioxidant activity, Peroxide Value (PV), Free Fatty Acid (FFA) value, total oxidation (totox) value, density and viscosity, level of toxicity and its heavy metals content. This study aimed to determine the quality of sardine oils which was obtained as by product of fish meal and fish canning industry. Sardine A and B had different fatty acid composition. Based on toxicity test, it was known that sardine oil B (572.02 ppm) had higher toxicity than sardine oil A (726.03 ppm). Heavy metal analysis results showed that sardine oil A had Pb concentration at 0.118 ppm, it passed a standard limit (≤0.1 ppm) and it might be harmful for consumption. Peroxides value of sardine oil A and B was 13.33 meq/kg and 5.00 meq/kg, respectively. The highest FFA value was sardine oil B (3.948%) then followed by sardine oil A (0.423%). Value of p-anisidine of sardine oil A and B was 1.09 and 0.88 meq/kg. The highest totox value was sardine oil A (27.76 meq/kg) then followed by sardine oil B (10.88 meq/kg). Viscosity of sample B (270 cPs) was higher than A (69 cPs) and sample B (1.02 g/cm 3 ) was denser than sample A (0.92 g/cm 3 ).