北京化工大学：《物理化学》课程教学资源（双语读书报告）Biosurfactants

Biosurfactants B.Zhang h and Zhang wen Appled Chemistry 0501

Biosurfactants Biosurfactants By Zhang li and Zhang wen Applied Chemistry 0501

What is the biological surfacm Biological Surfactants are mic under certain conditions,culturein the metabolic process of secretion gi surfactant with the metabolite

Biological Surfactants are microbes under certain conditions, culture, in the metabolic process of secretion of surfactant with the metabolite What is the biological surfactants

structure Biological surfactants and other common surfactants,the structure is of polar and non-polar tail. polar head non-polar tail Trehalose fat

structure structure Biological surfactants and other Biological surfactants and other common surfactants, the structure is common surfactants, the structure is of polar and non of polar and non-polar tail. polar tail

Biological surfaciani types General can be divided into 5 categories: Phospholipid T.thiooxidans Fatty Acids Hare Corynebacterium Lipopeptide and lipoprotein:Bacilus subilis Bacillus licheniformis Polymer LPS):B calcium Acinetobacter Glycolipid

General can be divided into 5 categories General can be divided into 5 categories： Phospholipid Phospholipid : T. thiooxidans : T. thiooxidans Fatty Acids Fatty Acids : Hare Corynebacterium : Hare Corynebacterium Lipopeptide and lipoprotein Lipopeptide and lipoprotein : Bacillus subtilis : Bacillus subtilis ＆ Bacillus licheniformis Bacillus licheniformis Polymer (LPS) : Polymer (LPS) : B calcium Acinetobacter B calcium Acinetobacter Glycolipid Glycolipid

Glycolipid NAME THE GERM GROWS Trehalose fat Paraffin Arthrobacter Corynebacterium. Rhamnolipid Pseudomonas aeruginosa. Sophorolipid Xie Candida lipolytica. Glucose,fructose,sucrose fat Glabrata. Corynebacterium. Fiber two glycolipids Hung Ping Rhodococcus

Glycolipid Glycolipid NAME THE GERM GROWS NAME THE GERM GROWS Trehalose Trehalose fat Paraffin Arthrobacter. fat Paraffin Arthrobacter. ＆ Corynebacterium. Corynebacterium. Rhamnolipid Rhamnolipid Pseudomonas aeruginosa. Pseudomonas aeruginosa. Sophorolipid Sophorolipid Xie Candida lipolytica. Xie Candida lipolytica. Glucose, fructose, sucrose fat Glucose, fructose, sucrose fat Glabrata. Glabrata. ＆ Corynebacterium. Corynebacterium. Fiber two glycolipids Fiber two glycolipids Hung Ping Rhodococcus . Hung Ping Rhodococcus

Biological Surfactants Preparation 1 The microorganism ferments a method It is the cornmnonly used method,low cost, simple operation and can be used for almost all types of biosurfacants 2.Enzymatic conversion It is a method which makes use of the catalyst function of particular enzyme()to Synthesize biosurfacants directly

Biological Surfactants Biological Surfactants Preparation Preparation １.The microorganism ferments a method The microorganism ferments a method It is the commonly used method, low cost, It is the commonly used method, low cost, simple operation and can be used for almost all simple operation and can be used for almost all types of biosurfacants types of biosurfacants ２．Enzymatic conversion Enzymatic conversion It is a method which makes use of the It is a method which makes use of the catalyst function of particular enzyme( catalyst function of particular enzyme(酶) to Synthesize biosurfacants directly. Synthesize biosurfacants directly

Biological Surfactants Application ① Oil industry 95 0 形 Biopolymers surfactant non-polar tail with the oil,in particular viscosity of the heavy 3 oil,combining well.so heavy 0020304050.6070.809101i oil emulsion,the long-chain 注入孔隙体积(PV) +一水驱含水() hydrocarbon fuel oil it can be “SP预测含水() ◆一实际含水() very easy to exploit,transport, ◆“水重采收率（角） ★一P预测采收率（传） and even as fuel combustion. ◆一S实际米收率值（修 Stability,flammability is good 注入孔隙体积(P) 图？小井距中心井含水与采收率变化曲线

Biological Surfactants Biological Surfactants Application Application ①．Oil industry Oil industry Biopolymers surfactant Biopolymers surfactant non -polar tail with the oil, in polar tail with the oil, in particular viscosity of the heavy particular viscosity of the heavy oil, combining well. so heavy oil, combining well. so heavy oil emulsion, the long oil emulsion, the long-chain hydrocarbon fuel oil it can be hydrocarbon fuel oil it can be very easy to exploit, transport, very easy to exploit, transport, and even as fuel combustion. and even as fuel combustion. Stability, flammability is good Stability, flammability is good

②.Medicinal Lecithin now face world class health products can be seen everywhere For instance phospholipids are also biological material surfactant A,in the role of the human body is to accelerate the metabolism of fat substances

②．Medicinal Medicinal Lecithin now face world class health Lecithin now face world class health products can be seen everywhere products can be seen everywhere For instance phospholipids are also For instance phospholipids are also biological material surfactant A, in the biological material surfactant A, in the role of the human body is to accelerate role of the human body is to accelerate the metabolism of fat substances the metabolism of fat substances

degradation of toxic substances Biological Surfactants especially Surfactin good material to the adsorption of heavy metal ions and hydroxide formed chelates C-CH(CH2)-CH-CH2-CO-GLU-LEU-LEU Amino acids HEU一⊥EU-ASP surfactin

③degradation of toxic substances degradation of toxic substances Biological Surfactants especially Surfactin good Biological Surfactants especially Surfactin good material to the adsorption of heavy metal ions and material to the adsorption of heavy metal ions and hydroxide formed chelates hydroxide formed chelates Amino acids

air single 量olecule Red:polar head Blue:non-polar tail Critical micelle Yellow:the surface between air and water biosurfactant in the vater Because of the interaction between polar hgls or hon-polar tails ,many molecules accumulate When the concentration reaches to a particular e the biosurfactant molecules can form critical micelle dthali concentration is omed critical micelle concentration

Red: polar head Blue: non-polar tail Yellow: the surface between air and water Critical micelle Because of the interaction between polar heads or non-polar tails ,many molecules accumulate. When the concentration reaches to a particular value ,the biosurfactant molecules can form critical micelle. And that concentration is named critical micelle concentration