MEL (Mannosylerthritol liquid)

Characteristics

A biosulfactant, one of glycolipids, produced from plant oil by yeast (Pseudozyma sp.)

• Hydrophilic part : mannose and erythritol
• Hydrophobic part : fatty acid

An eco-friendly and human-suitable material

• Non-toxicity
• High biodegradability
• High surface activity
• High emulsification activity
• High thermal stability
• Low CMC value

Properties of MEL(SY16)

Surface activity

• Minimum surface tension(dyne/cm) : 29
• CMC1 : 10mg/l
• HLB : 6~7
• Emulsification activity(unit)2 : 70

Stability

• pH stability3 : 4-10
• Thermal stability3 : Up to 100°C
• Salt(NaCl) resistance4 : Up to 100mM(0.6%)

Other properties

• Toxicity(g/l, w/w)5 : 5

1. CMC value was measured with purified biosurfactant
2. Emulsification activity was measured against hydrocarbons with crude biosurfactant at a concentration of 0.1g/l
3. Stabilities were determined by measuring the surface tension of biosurfactant solution
4. Salt resistance were determined by measuring emulsification activity
5. Toxicity was determined as the concentration to inhibit the 50% of mouse fibroblast cell L929