The slanted shape of this medium provides an array of surfaces that are either exposed to oxygen-containing air in varying degrees (an aerobic environment) or not exposed to air (an anaerobic environment) under which fermentation patterns of organisms are determined.

What is slant test?

Last updated: June 14, 2019 by Sagar Aryal. Lysine iron agar (LIA) slants tests organisms for the ability to deaminate lysine or decarboxylate lysine. Lysine deamination is an aerobic process which occurs on the slant of the media. Lysine decarboxylation is an anaerobic process which occurs in the butt of the media.

What is the principle of TSI?

Principle of TSI test: The presence of fetrous sulphate and sodium thiosulphate fulfills the demand of sulphur and there is the indicator phenol red for the indication of change in the invironment of the media due to the production of acid or alkali.