Study of extraction and determination of physical-chemical properties and fatty acid composition of seed oil triglycerides making up longan (Dimocarpus longana)

Siti Hamamah Gustiani
Deskripsi Dokumen: http://www.lontar.ui.ac.id//opac/themes/libri2detail.jsp?id=123290&lokasi=lokal
Longan (Dimocarpus longana) is a plant that is grown in Indonesia. Litchi plant widely used as food, medicine and cosmetics, as well as other industries. Litchi seed is a source of vegetable oil of unknown physico-chemical properties, so that utilization is not maximized and litchi seed is the only agricultural waste. In this study, litchi seed oil obtained from extraction method sokhletasi with nonpolar solvent n-hexane. The extract in the form of brownish orange oil reprocessed to produce more oil by neutralization and Decolorize pure, so obtained a yellow oil longan. Extracted oil with and without purification were analyzed physico-chemical properties. Constituent fatty acid composition of triglycerides from longan seed oil refining results are known with gas chromatography equipment. Fatty acid composition of longan seed oil is linoleic acid 26.73%, 22.08% oleic acid, linolenic acid 8.59%, 19.78% palmitic acid, stearic acid 3.41%, 0.48% caprylic acid; 0.18% lauric acid, myristic acid 0.09%, and 0.06% capric acid. Keywords: Dimocarpus longana, lipids, Triglycerides, Fatty Acids.