Читать книгу Biosurfactants for a Sustainable Future - Группа авторов - Страница 76

The best‐studied polymeric biosurfactants are emulsan, liposan, mannoprotein, and polysaccharide–protein complexes [26]. For hydrocarbons in water, even at a concentration as low as 0.001–0.01%, emulsan works as a very effective emulsifying agent. With a composition of 83% carbohydrate and 17% protein, liposan behaves as an extracellular water‐soluble emulsifier. Mannoproteins, which contain 44% amnnose and 17% protein, are produced in large quantity by Saccharomyces cerevisiae. For oil spills, organic solvents, and alkanes, these mannoproteins show excellent emulsifying activity.