Tuna (Thunnus sp.) is a high-economic fish that is most sought after in the Indonesian seas. Tuna has good nutrition for the human body, content such as high protein, vitamin and mineral content, and has a delicious taste, so this fish can be diversified. One of the products is fish floss that can be used as functional food. This study aims to determine: (1) determine effect of banana blossom addition in fish floss to organoleptic parameter (2) determine effect of banana blossom addition in fish floss to peroxide value and water content. The method used in this study is an experimental method with an experimental design in the form of a simple Completely Randomized Design (CRD). The independent variables in this study were the concentration of banana blossom 30%, 50%, and 70% while the dependent variables were organoleptic, water content and peroxide value. The best fortification of banana blossom is 70% with organoleptic score of appearance 5.178; scent 4.922; texture 5.078; and taste 4.944. The peroxide value in the tuna floss product with 70% banana blossom concentration is 0.578 meq/kg and water content 13.33%.

Skin cancer had become one of the most occurring type of cancer all around the world. The needs for alternative additional substance in sunscreen, especially from natural ingredients become important. Seaweed is one of marine natural resource known for its many benefits and widely used in cosmetic industries. The purpose of this research are to determine the photoprotective activity of Eucheuma sp. extract obtained from different type of solvents against ultraviolet radiation and its effect. Eucheuma sp. extracted by maceration using two different solvents (methanol and ethyl acetate). Filtrate obtained from maceration evaporated until the consistency are pasta-shaped and tested using spectrophotometer to determine the SPF, % of Te, and % Tp. The result of spectrophotometer tests evaluated and analyzed to determine which solvent generate the best value of SPF, % of Te, and % of Tp. The result of this this research showed that the highest SPF value are present in ethyl acetate extract (SPF 26.4). The best value of Te and Tp percentage are also present in the ethyl acetate extract with their respective values: 0.88% and 18.64%. The conclusion of this research are Eucheuma sp. extract had a good potential of photoprotective activity.

No abstract

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.