Liquid Media

Culture media are mediums that provide essential nutrients and minerals to support the growth of microorganisms in the laboratory. Liquid media remain in liquid form at room temperature and do not contain any traces of solidifying agents, such as agar or gelatin. Large growth of bacterial colonies can be observed in the media. Liquid media are also called broths, they allow for uniform and turbid growth of fastidious organisms when incubated at 37ºC for 24hrs. The media is used for the profuse growth of microorganisms and fermentation studies. Examples include Tryptic soy broth, phenol red carbohydrate broth, MR-VP broth, and nutrient broth. Also, nutrient broth can be enriched with blood, serum, sugars… etc. for special purposes.