merepunavetikaist saadav kõrgmolekulaarne polüsahhariid, mida looduses leidub msg. sooladena. Temperatuuril 95 C muutub lahustumatu amorfne agar vees kolloidlahuseks, mis alla 45 C jahtudes annab tarde. 0.5-2.0 %-lise tihedusega geeli kasutatakse mikroobi- ja seenekultuuride substraadina, kondiitritööstuses tarretina džemmi ja marmelaadi valmistamisel, tekstiilitööstuses viimistlusainena.
a stabilizer and thickening agent extracted from seaweed, dried and bleached, then processed to powder form. When hydrated it is virtually colourless, tasteless and odourless, and when cooled to below 40 C it forms a transparent gel. Also used as a growth media for microbiological tests.
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