Salt is a chemical compound whose main components are sodium chloride (NaCl), water compounds, magnesium ions, calcium ions, and sulfate ions. In salt production generally no equipment is used or high technology is not adepted. The manufacturing process used firewood in a furnace, and the salt that is produced is then dried on a pottery tray made from palm leaves or nyiru panjang which is called socal by the local community before being put into sack packaging. The purpose of this study was to determine the characteristics of cooking salt from Rabasa Haerain village and Weoe village. This study was conducted in June-August 2019. Chemical tests were done at the Technical Implementation Unit of Mathematics and Natural Sciences Laboratory Widya Mandira University for water content and NaCl; and the organoleptic testing for color and aroma tests was done at the Exacta Laboratory of Artha Wacana Christian University. The results showed the average value of saltwater produced traditionally from the two villages in the Malaka District content in Rabasa Haerain village was the highest average of 13.61% while the lowest is 10.55% found in Weoe village. The highest average value of NaCl was 78.45%, namely in Weoe Village and the lowest was 73.93%, of Rabasa Haerain village. The average value for color organoleptic produced by both villages is 100, the lowest average color value is 33.33, in Rabasa Hairaen village and the highest is 66.67, that was found in Weoe village. The average value of aroma organoleptic produced by both villages is 100, the lowest average value is 46.47, that is in Weoe village and the highest was 53.33 in Rabasa Haerain village.

Processed products from tuna which are products from smoked tuna fish using gradually smoking methods resulted from the combustion of kesambi wood and resting interval. The purpose of this study was to analyze the phenol content and the total acid product of tuna produced using a gradual smoking method with resting interval. The research method used is experimental method and the design using a randomized block design with the treatment being tested is smoking without resting interval and smoking with an interval of 10 minutes and 20-minutes interval periods. The variables measured were phenol and total acid levels. The results showed that the average value of phenol levels ranged from 563.82-967.93 mg / g per samples and total acids ranged from 216.84 to 224.57 ml /g.

Seaweed farming has developed in Rote-Ndao Regency since 1999, and in Hundihuk Village seaweed farming is currently a mainstay commodity for coastal communities. The main problem faced in seaweed farming there is the phenomenon of the ice-ice disease that attacks seaweed, especially before the change of seasons. The existence of the disease has an impact on a decrease in production which results in a decrease in the income of farmers. The existence of the ice-ice disease, it is suspected that bio-ecologically and biophysically conditions of the waters that are farmed are experiencing disturbances due to pollutants and/or decreased water quality, farming methods that are not suitable due to the dependence of the community on monoculture farming, However, the disease can also be caused by the use of low quality seeds. Therefore, a solution is needed to overcome the problem of ice-ice disease. One of them is the ice-ice disease control model through the application of appropriate and effective farming techniques or methods, so as to increase the productivity of the seaweed farming business, the method in question is farming with a polyculture system and the introduction of resistant cultivars. Farming with a polyculture system that utilizes other macroalgae/seaweeds as companion plants is very effective in controlling the ice-ice disease. The total intensity of infection of the ice-ice disease every week is very small, ranging from 0.2 - 2.5 for the polyculture system compared to the monoculture system with a large range of 0.1-17.1%.

Rote Ndao is one of the regencies in East Nusa Tenggara Province that is designated as the Center for Integrated Maritime Affairs and Fisheries. This area is expected to encourage economic growth in the periphery with the main driving locomotive being the fisheries sector. Seaweed cultivation has developed in Rote-Ndao District since a decade ago. The coastal area used for seaweed cultivation in this district in 2018 reached 1,718 ha (57.21%) of the potential area of 3,003 ha. Seaweed cultivation activities carried out in this regency are generally still limited to water areas that are considered safe to try and provide benefits that are considered quite good, even though the cultivation is technically inadequate or does not meet the technical requirements of seaweed cultivation. The purpose of this study was to analyze the suitability of the area of seaweed cultivation in Hundihuk Village. The data collection method used in this study is the survey method. Analysis of space availability is based on the suitability of the waters that support seaweed cultivation. The results showed that the analysis of the suitability of the waters of the village of Hundihuk was included in the category of very appropriate with the value of 267.5, this meant that the development of seaweed was still possible by taking into account the carrying capacity of the ecosystem.