Gum Arabic - Solubility- and viscosity properties
3 important questions on Gum Arabic - Solubility- and viscosity properties
What is the solubility of gum arabic?
The solubility is extremely high. 50% w/w solutions can be obtained without significant increasing the viscosity. It has a branched, charged (galacturonic acid) and compact structure. The viscosity is very low.
When is the viscosity of gum arabic the highest?
When the pH is 4.5-5.5
Why is gum arabic a good emulsifier?
Because the arabinogalactan-protein complex has a hydrophobic polypeptide chain with hydrophilic carbohydrate blocks. They shuffle when in water-oil mixtures.
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