Agar is not a chemically defined product. It is a natural blend of polysaccaharides made up by Agarose, a neutral molecule and other more coomplex molecules known as Agaropectines.
Agar is insoluble in cold water. 1,5% Agar solution in boiling water forms a gel when cooling down an this will not melt until heated over 85oC. Agar does not need the presence of cations in order to gellify an it shows a higher gel consistency than any other gellifying agent.
Agar can be used within ample range of pH reading (5-8). Agar can be utilized blended with other gums, and it is a calorie-free fibre as it is not digestible by man.
|Gel strength||Before autoclaving||g/cm2||> 900||970,0|
|Loss on drying||%||< 18||12,5|
|Total ashes||%||< 6||3,1|
|pH (1,5% solution)||Gel before autoclaving||6-7,5||6,5|
|Nephelos||Before autoclaving||NTU||< 15||5,9|
|Melting point||Before autoclaving||oC||> 91,5||92,4|