VARIASI SUMBER KARBON TERHADAP PRODUKSI BIOSURFAKTAN OLEH BAKTERI HALOFILIK ISOLAT TAMBAK GARAM KAJHU ACEH BESAR

This research has isolated one type of halophilic bacterial strain from the salt pond Kajhu Village with code KJ-AB2. bacterium grew optimally at 10% (w/v) NaCl so it was classified as moderate bacteria. Several types bacteria are known to produce biosurfactants. Biosurfactants surface active agents that widely used in several pharmaceutical, food dan petroleum industries. The production biosurfactants is strongly influenced by carbon source for growth. Olive oil, palm sunflower glucose glycerol sources see their effect producing isolate growed well on five an average OD600 2.001±0.293 72 hours fermentation. Biosurfactant measured oil spreading test (OST) every 24 until 120 highest OST value obtained when KJ-AB2 grown biosurfactant media using olive 5.6±0.6 cm, 4.7±0.6 4.6±0.7 respectively.