agar

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Related to Mannitol Salt Agar: blood agar, EMB agar, MacConkey agar

Agar

(ā`gər), the same as HagarHagar
or Agar
, according to the Book of Genesis, servant of Abraham's wife Sarah and mother of his eldest son, Ishmael. She and her son were sent out into the wilderness because of Sarah's jealousy. An angel aided her there.
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agar

(ä`gär, ā`–, ăg`är), product obtained from several species of red algae, or seaweedseaweed,
name commonly used for the multicellular marine algae. Simpler forms, consisting of one cell (e.g., the diatom) or of a few cells, are not generally called seaweeds; these tiny plants help to make up plankton.
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, chiefly from the Ceylon, or Jaffna, moss (Gracilaria lichenoides) and species of Gelidium, harvested in eastern Asia and California. Chemically, agar is a polymer made up of subunits of the sugar galactose; it is a component of the algae's cell walls. Dissolved in boiling water and cooled, agar becomes gelatinous; its chief uses are as a culture medium (particularly for bacteria) and as a laxative, but it serves also as a thickening for soups and sauces, in jellies and ice cream, in cosmetics, for clarifying beverages, and for sizing fabrics. See also RhodophytaRhodophyta
, phylum (division) of the kingdom Protista consisting of the photosynthetic organisms commonly known as red algae. Most of the world's seaweeds belong to this group.
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Agar

A major constituent of the cell walls of certain red algae, especially members of the families Gelidiaceae and Gracilariaceae. Extracted for its gelling properties, it is one of three algal polysaccharides of major economic importance, the others being alginate and carrageenan. Agar is composed of two similar fractions, agarose and agaropectin, in which the basic unit is galactose, linked alternately α-1,3-( d -galactose) and β-1,4-(α- l -galactose).

Agar is prepared by boiling the algae in water, after which the filtered solution is cooled, purified, and dried. It is an amorphous, translucent material that is packaged in granules, flakes, bricks, or sheets. One of its chief uses is as a gelling agent in media for culturing microorganisms. It is also used in making confections, as an emulsifier in cosmetics and food products, as a sizing agent, as an inert carrier of drugs in medicine, and as a laxative. See Culture

agar

[′äg·ər]
(materials)
A gelatinous product extracted from certain red algae and used chiefly as a gelling agent in culture media.

agar

a complex gelatinous carbohydrate obtained from seaweeds, esp those of the genus Gelidium, used as a culture medium for bacteria, a laxative, in food such as ice cream as a thickening agent (E406), etc.
References in periodicals archive ?
aureus: Petri plates of Mannitol Salt agar expressed growth for both steam autoclave utility gloves and used utility gloves.
5% sodium chloride, but mannitol salt agar contains 7.
After filtration of all the liquid, five washes were performed with 100 mL of sterile distilled water, the membranes were placed on the surface of Petri dishes containing Mannitol Salt Agar and incubated at 36.
Morphological examination by Gram staining technique was done and simultaneously culturing was also performed on blood agar, chocolate agar, brain heart infusion agar, china blue lactose agar, china blue maintol agar, mannitol salt agar, sulfide indole motility medium, nutrient gelatin and triple sugar iron agar.
100 microlitre of each milk samples was into Nutrient agar, Mac Conkey agar, Mannitol salt agar, Heart infusion agar, Eosin methylene blue agar and Mueller Hinton agar and were incubated aerobically at 37[degrees]C for 24-48 hours.
SELECTIVE MEDIA: Milk agar, High salt agar, Mannitol salt agar, Potassium Tellurite agar.
aureus colonies (black colonies surrounded by 2-5mm clear zones) were transferred to on Mannitol Salt agar (Fluka, Spain) for further purification.
aureus produce abundant 3% hydrogen peroxide catalase, which can added to colonies interact with hydrogen on agar plate peroxide to produce oxygen Catalase-positive colonies produce oxygen and bubble almost immediately Test: Mannitol salt agar (MSA) S.
The analysis was restricted to bacteria that grow on Mannitol salt agar or MacConkey agar.
Each swab was plated on mannitol salt agar and incubated for 48 hours at 35 [degrees] C.
Blood agar base,urea broth agar,simmons citrate agar,agar lia,common mannitol salt agar phenol red etc.