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Agar Definition and Explanation 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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