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agar
agar , product obtained from several species of red algae, or seaweed , 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 Rhodophyta . |
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"agar." The Columbia Encyclopedia, 6th ed.. 2008. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>. "agar." The Columbia Encyclopedia, 6th ed.. 2008. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1E1-agar.html "agar." The Columbia Encyclopedia, 6th ed.. 2008. Retrieved February 10, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1E1-agar.html |
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agar
agar Dried extracts from various seaweeds, including Gelidium and Gracilaria spp. It is a partially soluble non‐starch polysaccharide, composed of galactose units. It swells with water to form a gel, and is used in soups, jellies, ice‐cream, and meat products. It is also used as the basis of bacteriological culture media, as an adhesive, for sizing silk, and as a stabilizer for emulsions. Also called agar‐agar, Macassar gum, vegetable gelatine.
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DAVID A. BENDER. "agar." A Dictionary of Food and Nutrition. 2005. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>. DAVID A. BENDER. "agar." A Dictionary of Food and Nutrition. 2005. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1O39-agar.html DAVID A. BENDER. "agar." A Dictionary of Food and Nutrition. 2005. Retrieved February 10, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O39-agar.html |
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agar
a·gar / ˈäˌgär; ˈāˌgär/ (also a·gar-a·gar / ˈägär ˈäˌgär; ˈāgär ˈāˌgär/ ) • n. a gelatinous substance obtained from various kinds of red seaweed and used in biological culture media and as a thickener in foods. |
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"agar." The Oxford Pocket Dictionary of Current English. 2009. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>. "agar." The Oxford Pocket Dictionary of Current English. 2009. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1O999-agar.html "agar." The Oxford Pocket Dictionary of Current English. 2009. Retrieved February 10, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O999-agar.html |
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agar
agar An extract of certain species of red seaweeds that is used as a gelling agent in microbiological culture media, foodstuffs, medicines, and cosmetic creams and jellies. Nutrient agar consists of a broth made from beef extract or blood that is gelled with agar and used for the cultivation of bacteria, fungi, and some algae.
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"agar." A Dictionary of Biology. 2004. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>. "agar." A Dictionary of Biology. 2004. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1O6-agar.html "agar." A Dictionary of Biology. 2004. Retrieved February 10, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O6-agar.html |
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agar
agar Complex substance extracted from seaweed; its powder forms a ‘solid’ gel in solution. It is used as a thickening agent in foods; as an adhesive; as a medium for growing bacteria, mould, yeast and other microorganisms; as a medium for tissue culture; and as a gel for electrophoresis.
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"agar." World Encyclopedia. 2005. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>. "agar." World Encyclopedia. 2005. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1O142-agar.html "agar." World Encyclopedia. 2005. Retrieved February 10, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O142-agar.html |
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agar
agar A complex polysaccharide obtained from certain types of seaweed. When heated with water and subsequently cooled to about 45°C, agar readily forms a gel (jelly); an agar gel supplemented with nutrients is used widely as a medium for the culture of bacteria and other micro-organisms.
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MICHAEL ALLABY. "agar." A Dictionary of Ecology. 2004. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>. MICHAEL ALLABY. "agar." A Dictionary of Ecology. 2004. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1O14-agar.html MICHAEL ALLABY. "agar." A Dictionary of Ecology. 2004. Retrieved February 10, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O14-agar.html |
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agar
agar A complex polysaccharide obtained from certain types of seaweed. When heated with water and subsequently cooled to about 45°C, agar readily forms a gel (jelly); an agar gel supplemented with nutrients is used widely as a medium for the culture of bacteria and other micro-organisms.
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MICHAEL ALLABY. "agar." A Dictionary of Plant Sciences. 1998. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>. MICHAEL ALLABY. "agar." A Dictionary of Plant Sciences. 1998. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1O7-agar.html MICHAEL ALLABY. "agar." A Dictionary of Plant Sciences. 1998. Retrieved February 10, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O7-agar.html |
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agar
agar (ay-ger) n. an extract of certain seaweeds that forms a gel suitable for the solidification of liquid bacteriological culture media. Agar may also be used as a laxative.
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"agar." A Dictionary of Nursing. 2008. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>. "agar." A Dictionary of Nursing. 2008. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1O62-agar.html "agar." A Dictionary of Nursing. 2008. Retrieved February 10, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O62-agar.html |
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Agar
Agar , the same as Hagar . |
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Cite this article
"Agar." The Columbia Encyclopedia, 6th ed.. 2008. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>. "Agar." The Columbia Encyclopedia, 6th ed.. 2008. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1E1-X-Agar.html "Agar." The Columbia Encyclopedia, 6th ed.. 2008. Retrieved February 10, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1E1-X-Agar.html |
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