I. Overview 
The biosurfactant BS is a biodegradable biosurfactant. Biosurfactants not only have the properties common to solubilizers, emulsions, wetting, foaming, dispersing, reducing surface tension, etc., compared to other surfactants produced by chemical synthesis or petroleum refining It has the advantages of non-toxic, biodegradable, ecological security and high surface activity, and has wide application prospect in petroleum field. Biosurfactant BS has low toxicity as biosurfactant, has good compatibility with human body and environment, has good characteristics of emulsification, dispersion, solubilization and so on. It has the research and development value in the field of oil drilling and so on. Oil industry.
The biosurfactant BS is a mixture of different glucose and lipid molecules, mainly divided into acid molecules and lactone type molecules. When the biosurfactant BS is dissolved in water, the surface tension can be reduced from 72.8 mN / m to 40-30 mN / m with a critical micelle concentration of 11-250 mg / L, so the biosurfactant BS can act as a detergent Or an emulsifier. The surface activity of the biosurfactant BS at 120 ℃ was not affected. In addition, the product surface activity in a certain degree of mineralization and pH is not affected.
Bio-surfactant BS molecules themselves have amphiphilic properties that have specific physiological functions, with anti-inflammatory, anti-tumor, anti-bacterial properties. The surfactant properties and bactericidal activity of the biosurfactant BS have a greater potential for its application in detergents. As a surfactant, the biosurfactant BS has an emulsifying activity that helps to separate hydrophobic substances and promote Which is degraded by microorganisms.
Second, the application of bio-surfactant BS
Bioactive surfactant BS as a glycolipid biosurfactant, non-toxic, odorless, tasteless, no stimulation of human skin, with good biocompatibility, biodegradability, environmental and many other advantages. Can replace chemical surfactants in the oil, cosmetic, environmental protection, food, medicine and agricultural daily chemical and other industries have different degrees of application.
1, in the oil industry in the application, as the tertiary oil extraction agent, viscosity reducer.
Microbial biosurfactant BS can be easily dissolved in formation water and injected into water to exert its high surface activity at the oil-water interface. The formation of biological surfactant containing water or injection of water can wet the surface of oil-bearing rock, wash off the surface of the oil film, with the ability to disperse crude oil, the adsorption capacity on the solid surface less, the ability to drive oil. Studies have shown that the biodegradation efficiency of BS is 3.5 to 8 times higher than that of synthetic surfactants.
The biosurfactant BS was used for indoor flooding experiments abroad and found that it had strong oil displacement capacity and 87% oil recovery when no other surfactants were added. Domestic scholars have shown that BS has the advantages of low dosage, low critical micelle concentration, strong salt tolerance and long working period, compared with chemical surfactants, and can replace chemical surfactants if the cost is appropriate. In addition to the common characteristics of biosurfactants, BS has a good effect of heavy oil viscosity reduction, especially lactone BS. Therefore, biosurfactant BS has a very good application prospect in petroleum industry The
2, in the application of the industry, as a detergent, foaming agent, anti-bacterial anti-inflammatory agent.
In the chemical industry, due to the biosurfactant BS with good moisturizing, decontamination, sterilization characteristics and a greater development and application value. Has been the application of finished products BS as detergent products appear on the market, such as Saraya produced detergent Sophoron. In addition, the French Soliance company introduced cosmetics Sopholiance S, is the use of BS in the anti-bacterial, beauty and other aspects of the role.
3, in the application of environmental protection, as emulsifiers, detergents, absorbent.
The biosurfactant BS is added to the petroleum contaminant, and its emulsifying action causes the contaminant to form an emulsion with water. Can promote the absorption and decomposition of microorganisms. Another method is to emulsify the emulsion several times, so as to achieve the purpose of removing petroleum contaminants. It is reported that raw BS can separate asphalt from tar. BS as a biosurfactant can remove heavy metal ions from the soil. In addition, the metal ions and hydrocarbons in the water can be adsorbed to the hydrophilic or hydrophobic ends of the BS and encapsulated into the micelles, respectively, by ultrafiltration to remove the metal ions and hydrocarbon species in the water. It is reported that biosurfactant BS can cause irreversible damage to cell membranes of harmful algae, so biosurfactant BS can greatly reduce harmful algae in nature.
4, in the food processing applications, as emulsifiers, thickeners, emulsifiers and tasty agents.
Biosurfactant BS has good surface activity (such as emulsifying activity, thickening, lubricating, etc.), and odorless, odorless, non-toxic, will not cause harm to the human body, it can be added as food additives to food The
5, in the application of medicine
With anti-tumor, anti-bacterial, anti-inflammatory, anti-viral activity.
6, other areas of application
The biosurfactant BS can also be used in many other fields, such as pesticides, nanotechnology, to obtain other high value-added products.
Third, the implementation of standards: Q / 371523QLS 001-2016
As an industrial product, three types of products are specified in this standard:
BS-50: mixed (with two types of mixed products);
BSA-50: acid type (acid type BS as the main component product);
BSL-50: lactone type (lactone type BS as the main component product).

Technical indicators

At present the company's bio-surfactant BS has been applied in the oil field.