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What is Agar in Microbiology? PDF | Download eBooks

Learn Agar definition in microbiology with explanation to study “What is Agar”. Study agar explanation with microbiology terms to review microbiology course for online degree programs.

Agar Definitions

  1. A complex sulfated polysaccharide, usually from red algae, that is used as a solidifying agent in the preparation of culture media.

    Prescott's Microbiology 9th Edition by Joanne Willey, Linda Sherwood, Christopher J. Woolverton



  2. A polysaccharide found in seaweed and commonly used to prepare solid culture media.

    Foundations in Microbiology by Kathleen Park Talaro, Arthur Talaro



Agar Explanation

Agar has a consistency of jelly and is acquired from red algae. It is composed of two constituents: agaropectin and the linear polysaccharide agarose. It is known to create the structure for support in the cell walls of a few algae species, and is released when it is boiled. The algae from which agar is obtained are agarophytes which are from the Rhodophyta phylum (red algae).

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