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Description

Tryptic Soy Broth is a highly nutritious, universal complex medium and hence supports the growth of a wide variety of aerobic and facultative anaerobic microorganisms, including fungi. The neutralizing additives polysorbate (Tween(R)) 80, sodium thiosulfate, cysteine, histidine, and lecithin reverse the growth inhibitory effect of most disinfectants and antiseptics. Histidine has neutralizing efficiency against formaldehyde and formaldehyde-releasing agents. Sodium thiosulfate inactivates sodium hypochlorite and acidified sodium chlorite. Cysteine is a reducing agent that neutralizes the oxidizing agents such as hydrogen peroxide and iodine. Lecithin, particularly in combination with Polysorbate 80, is effective against quaternary ammonium compounds, amphoteric surfactants, benzamidines, chlorhexidines, and dequadin. Polysorbate 80 inactivates benzyl alcohol, carbanilides, dichlorbenzyl alcohols, benzoic acid, p-hydroxybenzoic acid, and its esters, phenols, phenylethyl alcohols, and Solbrols (PHB esters).