Abstract
Media with various combination of pH and parabens were inoculated with Asp. niger and Asp. spp. (laboratory isolated) and incubated for 72 hours at 25°C. The relationship of specific growth rates to the pH of medium was investigated by polynomial regression analysis. The quadratic equation expressed the relationship between specific growth rates and the pH of medium. Antimicrobial activity of parabens depended on the concentration of undissociated form in the medium. This study led to the conclusion that estimates of specific growth rates of fungi are obtained through the use of the pH and the concentration of parabens of medium.
