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This study aims to isolate and identify microorganisms in the form of bacteria and fungi in tilapia fish waste and to demonstrate the effectiveness of turmeric extract (Curcuma longa Linn.) as an antimicrobial agent. Tilapia fish waste samples were fermented for seven days and then microorganisms were isolated using Nutrient Agar (NA) media for bacteria and Potato Dextrose Agar (PDA) for fungi. Turmeric extract treatment was carried out using the disc diffusion method. The results showed the presence of several species of Gram-positive and Gram-negative bacteria, as well as fungal colonies with dominant characteristics of Aspergillus sp. and Fusarium sp. Turmeric extract with a concentration of 20% showed a significant inhibition zone against the growth of pathogenic bacteria and fungi. The content of secondary metabolites such as alkaloids, tannins, and phenolics in turmeric extract is thought to be the main factor in antimicrobial activity.

Nugget is processed mashed meat. Several types of fish such as tuna, tilapia, and snapper have the potential to increase sales value and can be used as raw material for nuggets, because apart from having quite high proteins, they also have thick flesh. Carrot flour has high levels of fiber and also high levels of beta-carotene. The purpose of this study was to determine the characteristics of fish nuggets which were high in fiber and beta-carotene with variations in the addition of carrot flour, tapioca flour and to find out the highest level of preference for fish nuggets. research using a completely randomized design (CRD) 2 factors with a comparison of carrot flour and tapioca flour and variations of fish species. The best chemical test results were the comparison of carrot flour: tapioca flour (40%:20%) with tuna fish with beta-carotene content of 6.69 μg/g, crude fiber content of 36.54%. The highest preference sensory test result is the comparison of carrot flour with tapioca flour (40%: 20%) with the type of tilapia meat with a color test result of 3.14 (likes), taste test 3.18 (likes), aroma test 3.20 (likes), texture test 3.29 (likes), and overall preference test 3.82 (likes). ). Fish nuggets made from tapioca flour and carrot flour can be a food that has high levels of crude fiber and beta-carotene.

Asnan Ridoanrisna. Efficiency Of Pakcoy Plants (Brassica Rapa) In Maintaining Water Quality To Support The Survival Rate Of Tilapia. Under Guidance By Robin And Novita Mz. Tilapia is a freshwater fish commodity with high economic value. According to data from the Central Bureau of Statistics (BPS), tilapia exports reached 12.29 thousand tons with a value of USD 78.44 million. Tilapia farming faces the risk of mortality which can lead to economic losses, one of which is caused by organic pollution. To address this issue, this research employs phytoremediation methods with varying plant densities to improve water quality and tilapia survival. The study was conducted with four treatments: A75 (plant density 75% of the aquarium surface area), A50 (50%), A25 (25%), and A0 (no plants), using an aquarium size of 60 x 30 x 50 cm³. Each treatment received chicken manure at 1.8 grams per aquarium and 40 tilapia fish per aquarium. Observations were made over 15 days in March 2023, measuring physical and chemical water parameters including DO, pH, TDS, temperature, and ammonia, as well as calculating the survival rate of tilapia. Using a Completely Randomized Design (CRD), the study found that treatment A75 achieved the highest survival rate at 62.5%. This result indicates that higher plant density in the phytoremediation method is more effective in maintaining water quality and supporting tilapia survival.

The Community Service (PKM) carried out by the author aims to train the community's abilities (especially MSEs) in making presto tilapia, increase innovation and diversification of presto processed foods and increase MSEs' income through diversity of production results. The method used is to provide education and practice to Uyung Sehati MSEs and Antakusuma University students. Education provided about Presto Tilapia Making as an Alternative to Increase the Selling Price of Quality Grade B Fish at Uyung Sehati UMK. Meanwhile, practice is making Nila Presto directly. This activity will be held on September 7 2023 starting at 08.00 WIB until finished. Location of activities at Micro and Small Enterprises (UMK) Uyung Sehati Jl. Swadaya RT.001 Sungai Kapitan Village, Kumai District, West Kotawaringin Regency. The results of the PKM show that the community and/or micro business actors have been able to make presto tilapia but still need assistance. Apart from that, the results of presto tilapia fish can be diversified into various flavors such as savory taste, white flesh color, soft texture with all parts edible, and a distinctive fish smell.

Tilapia fish fillet have a high protein contain (18,70g/100g) however it can be easily decay. The aim of this study was to know the characteristic of lemongrass oil, characterisric of edible film with the addition of lemongrass oil and quality of tilapia fish fillet coated with edible film-natrium alginate enriched lemongrass oil on cold storage. Edible coating based on alginat added with lemongrass oil and applied on fishery products, tilapia fish fillet. The studies used Complete Random Design 2 factor, lemongrass oil concentration and storage time. Analyzed used one way ANOVA and continued with Duncan’s Multiple Range Test (a:0.05) and paired t-test (a:0.05). The analysis showed that yield of lemongrass oil was 0.27%; specific gravity was 0.85476 g/ml; viscosity was 0.021 N.m/s2 and have 17 active compound. Inhibitory zone of lemongrass oil between 6.417 mm – 20.333 mm. Thickness of edible film added with lemongrass oil between 0.063mm-0.104mm; tensile strength value 1.974 MPa-2.563 MPa and WVTR 4.454 g/jam.m2-5.165 g/h.m2. The result of application edible coating enriched with lemongrass oil on fillet showed the TBA and TPC value were significantly increased during however it didn’t affect significantly to the TVB and pH value. Edible coating enriched lemongrass oil 1.5% able to maintain microbiological quality until day 3 and oxidative quality until day 12