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  1. No Access

    Article

    Biodegradation of plasticizers by Rhodococcus rhodochrous

    Rhodococcus rhodochrous was grown in the presence of oneof three plasticizers: bis 2-ethylhexyl adipate (BEHA), dioctyl phthalate (DOP) ordioctyl terephthalate (DOTP). None of the plasticizers were degraded unle...

    S. Nalli, D. G. Cooper, J. A. Nicell in Biodegradation (2002)

  2. No Access

    Article

    Quantitative analysis of biosurfactants using Fourier Transform Infrared (FT-IR) spectroscopy

    A quick and simple technique has been developed that is suitable to quantify the concentration of most types of biosurfactants in a typical growth medium using infrared spectroscopy. The area of the peak due t...

    J. Gartshore, Y.C. Lim, D.G. Cooper in Biotechnology Letters (2000)

  3. No Access

    Article

    Biomass Measurements in Hydrocarbon Fermentations

    A rapid and accurate method to determine biomass concentration of cultures growing on hydrocarbons is presented. The technique is based on turbidity. The method eliminates the common problem of inaccurate biom...

    F. Marino, J.M. Karp, D.G. Cooper in Biotechnology Techniques (1998)

  4. No Access

    Article

    Determining biomass from differential total organic carbon

    A simple procedure for the determination of biomass concentration based on total organic carbon (TOC) is presented. The method uses a total of 2mL of sample, and requires less than an hour to perform. The tech...

    W.A. Brown, R. Pinchuk, D.G. Cooper in Biotechnology Techniques (1997)

  5. No Access

    Article

    Testing of microbial demulsifiers with heavy crude emulsions

    It has already been demonstrated that model water-in-kerosene systems and toluene diluted heavy crude oil emulsions can be broken by microbial agents. In this studyN. amarae andR. rhodochrous are used on undilute...

    M. A. Wilkinson, D. G. Cooper in Biotechnology Letters (1985)

  6. No Access

    Article

    Surface active properties of a biosurfactant fromCorynebacterium lepus

    A mixture of corynomycolic acids (R1-CH(OH)-CH(R2)-COOH) isolated fromCorynebacterium lepus was shown to have excellent surfactant properties. It caused significant lowering of surface tension in aqueous solution...

    D. G. Cooper, J. E. Zajic, C. Denis in Journal of the American Oil Chemists’ Society (1981)