What is the difference between agar and nutrient broth

Peptone and yeast extract provide nitrogenous compounds, carbon, vitamins and some trace ingredients necessary for the growth of bacteria. Viva Differences. The main difference between nutrient agar and nutrient broth is the addition of agar. Both media are used to grow a wide variety of non-fastidious bacteria in laboratories. You can download PDF version of this article and use it for offline purposes as per citation notes.

Aryal, Sagar. Available here. Wikimedia Foundation, 28 Apr. Samanthi Udayangani holds a B. Degree in Plant Science, M. Your email address will not be published. Figure Nutrient Agar Plate. Figure Nutrient liquid medium in test tubes.

Leave a Reply Cancel reply Your email address will not be published. Nutrient Agar vs Nutrient Broth. Nutrient Agar is a solid medium which is prepared to grow a wide variety of bacteria. Colonies of different types of organisms on nutrient agar are shown in figure 1. Figure 1: Colonies on Nutrient Agar. Nutrient broth refers to a general purpose, liquid medium that allows the growth of fastidious organisms. Generally, a nutrient broth is prepared in test tubes or reagent bottles.

The main function of nutrient broth is the maintenance of the stocks of microorganisms. The nutrient broth in bottles is shown in figure 2. Nutrient Agar: Nutrient agar refers to a general purpose medium that supports the growth of a wide range of non-fastidious organisms. Nutrient Broth: Nutrient broth refers to a general purpose, liquid medium that allows the growth of fastidious organisms. Nutrient Broth: Nutrient broth does not contain agar.

Nutrient Agar: Nutrient agar is composed of peptone, beef extract, yeast extract, agar, and sodium chloride. Add a header to begin generating the table of contents. It is ideally used for the isolation, cultivation and maintenance of non-fastidious organisms. It is used for checking the purity of the culture prior to biochemical or serological testing. It aids in the enumeration of organisms in water, sewage, dairy products, faeces and other materials.

It is used for producing bacterial lawns required for antibiotic sensitivity tests. It provides a high-grade base for preparing special media.