Mappiratu

KAJIAN SINTESIS GIPSUM DARI BATU GAMPING ASAL SULAWESI TENGAH

ABSTRACT Research has been done for synthesis gypsum from limestone in Central Sulawesi. This Research aims are to know the best ratio of sulphuric acid of limestone that producer the highest CaSO 4 and which areas in the Central Sulawesi as a producer of best limestone for the raw materials CaSO 4 . Variation ratio of sulphuric acid used is 70:25, 80:25, 90:25, 100:25, and 110:25. This Research using a group randomized design (GRD). The treatment was applied variations from limestone on the 3 areas, that is limestone from Bangkep (group 1), limestone from Buol (group 2) and limestone from Donggala (group 3). The purity of CaSO 4 be analiyzed using AAS and uv-vis Spectrofotometri. The result showed that the best ratio of sulphuric acid is 110:25 and producer area of the best limestone for the raw materials of CaSO 4 in the Bangkep. Keywords: Gypsum, Limestone, Sulfuric Acid, Yield, Purity

RETENSI ASAM EIKOSAPENTAENOAT (EPA) TORTILLA TEPUNG IKAN LELE SELAMA PENGOLAHAN DAN PENYIMPANAN PADA SUHU RUANG

A research on the retention of eicosapentaenoic acid (EPA) on theprocessing and storage of functional tortillas.This study aims to determine the retention of eicosapentaenoic acid (EPA)flour tortillas catfish during processing and storage at room temperature.The research method includes the step of making flour catfish, processing tortillas and tortilla storage at room temperature.Analysis eicosapentaenoic acid in the tortilla is done every 7 days for 56 days using Gas Chromatography.The Results obtained indicated eikosa penta enoic acid were demaged during processing tortillas with the level of demage 9,17%. Tortillas storage at room temperature for 56 days lead to demage 31,97% EPA.