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Green tea-flavored yōkan, a popular Japanese red bean jelly made from agar A blood agar plate used to culture bacteria and diagnose infection. Agar (/ ˈ eɪ ɡ ɑːr / or / ˈ ɑː ɡ ər /), or agar-agar, is a jelly-like substance consisting of polysaccharides obtained from the cell walls of some species of red algae, primarily from “ogonori” and “tengusa”.
Nutrient agar is a general-purpose solid medium supporting growth of a wide range of non-fastidious organisms. It typically contains ( mass/volume ): [ 1 ] 0.5% peptone – this provides organic nitrogen
Contamination on an agar plate. An agar plate is a Petri dish that contains a growth medium solidified with agar, used to culture microorganisms. Sometimes selective compounds are added to influence growth, such as antibiotics. [1] 96 pinner used to perform spot assays with yeast, fungal or bacterial cells
While the unaffected wood of the tree is relatively light in colour, the resin dramatically increases the mass and density of the affected wood, changing its colour from a pale beige to yellow, orange, red, dark brown or black. In natural forests, only about 7 out of 100 Aquilaria trees of the same species are infected and produce aloes/agar wood.
It is a linear polymer made up of the repeating unit of agarobiose, which is a disaccharide made up of D-galactose and 3,6-anhydro-L-galactopyranose. [2] [3] Agarose is one of the two principal components of agar, and is purified from agar by removing agar's other component, agaropectin. [4]
YM Agar and Broth, is a selective growth medium with low pH useful for cultivating yeasts, molds, or other acid-tolerant or acidophilic organisms, while deterring growth of most bacteria and other acid intolerant organisms. [1] It is malt extract medium modified by the addition of yeast extract and peptone. [2]
Gulaman, in Filipino cuisine, is a bar, or powdered form, of dried agar or carrageenan extracted from edible seaweed used to make jelly-like desserts. In common usage, it also usually refers to the refreshment sago't gulaman , sometimes referred to as samalamig , sold at roadside stalls and vendors.
Sabouraud agar or Sabouraud dextrose agar (SDA) is a type of agar growth medium containing peptones. [1] It is used to cultivate dermatophytes and other types of fungi , and can also grow filamentous bacteria such as Nocardia .