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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

(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

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

McGraw-Hill Concise Encyclopedia of Bioscience. © 2002 by The McGraw-Hill Companies, Inc.

agar

[′äg·ər]
(materials)
A gelatinous product extracted from certain red algae and used chiefly as a gelling agent in culture media.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

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.
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
References in periodicals archive ?
These results further indicated that addition of [kappa]-carrageenan caused greater shear thinning properties of yogurt samples, whereas starch and agar-agar showed a smallest effect than [kappa]-carrageenan on the shear thinning behaviour of the yogurt samples.
Place in saucepan and heat to boiling, stirring constantly, until agar-agar flakes are completely dissolved.
For the mint sauce jelly: 1 tbsp mint sauce 200g water 1 bag of mint 125g caster sugar 100g cider vinegar 1g agar-agar (this will gel 100ml liquid) Lemon juice to taste | Bring the water and sugar to the |boil, add the mint and leave to infuse.
Ingredients:Ingredients: 1 whole grouse, prepared into 2 breasts and two legs, skin on, 1.1kg fresh rose hips, 1 butternut squash, 500g sugar, 250g jar of duck fat, 150g agar-agar flakes, 100g finely diced smoked bacon., 55ml white balsamic vinegar, 45g honey, 10ml sherry vinegar, bunch of fresh sage For the pickled rose hips: Wash 100g rose hips, cut off the tops, slice in half and carefully remove the seeds (they are an irritant).
ANSWERS: 1 Professor Sprout; 2 Clockmaker; 3 The Maldives; 4 The violin; 5 Agar-agar; 6 The Baltic Sea; 7 Golf; 8 Alan Bennett; 9 Gluten; 10 Balboa.
Stir in agar-agar, cook for 30 seconds and remove from
To make prawn noodles, puree 500 g prawns, then mix with 8 g agar-agar and 2 g salt, then blend again until smooth.
MORELLO CHERRY AND PISTACHIO MINI CHEESECAKES 4 servings | Preparation time: 30 minutes Cooking time: 60 minutes | Refrigeration time: 4 hours minimum FOR THE CREAM FILLING: 4 tbs oat bran 2 tbs wheat bran 10 drops vanilla flavouring 1 tbs Splenda granules 2 egg yolks 2 tbs skimmed milk FOR THE CAKE: 2 eggs, separated 2 tsp liquid Hermesetas 1 tsp pistachio flavouring 1 tbs cornflour 1 X 2g sachet agar-agar 500g (1lb 2oz) fat-free fromage frais Pinch of salt FOR THE MORELLO CHERRY TOPPING: 200ml (7fl oz) water 1 X 2g sachet agar-agar 11/2 tsp liquid Hermesetas 1 tsp morello cherry flavouring To make the biscuit bases Preheat the oven to 180C/350F/Gas 4.
Which English playwright wrote Habeas ANSWERS: 1 Professor Sprout; 2 Clockmaker; 3 The Maldives; 4 The violin; 5 Agar-agar; 6 The Baltic Sea; 7 Golf; 8 Alan Bennett; 9 Gluten; 10 Balboa.