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گواهی نمایه سازی مقاله Production of Biosurfactant by Microorganisms in Bioreactor

عنوان مقاله: Production of Biosurfactant by Microorganisms in Bioreactor
شناسه (COI) مقاله: NCCEESLAMSHAR01_138
منتشر شده در همایش ملی مهندسی شیمی در سال ۱۳۸۸
مشخصات نویسندگان مقاله:

Seyed Ruhollah Mortazavi - Islamic Azad University of Dehdasht
Amir Hamzeh Razavi - Islamic Azad University of Dehdasht
Elyass golabi - Petroleum Engineering Department, Islamic Azad University of Omidieh branch

خلاصه مقاله:
Biosurfaactants are a group of surface active agents which are produced by microorganisms. In this research a bacterial species with the ability of producing biosurfactant was isolated from soil. The bacterium was able to grow on gas oil as the sole source of carbon and energy. Concentrations of gas oil up to about two percent were not detrimental to the bacterial activity. The excess gas oil in the fermentation medium served as an exteractant for the biosurfactant. Separation of the organic phase from the aqueous phase and evaporation of the gas oil resulted in a powder of crude biosurfactant. Each liter of the fermentation medium gave about 2.8 grams crude biosurfactant. The critical micelle concentration of the powder was 100 mg/L. The biosurfactant reduced the surface tension of distilled water to 26mN/m.

کلمات کلیدی:
biosurfactant, critical micelle concentration, microbial

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