Food Grade Propylene Glycol Alginate (PGA)
Specifications
Propylene Glycol Alginate PGA
natural source of food additive
good choice of emulsifier, stabilizer and thickener in food
CBH -- Propylene Glycol Alginate is an ester of alginic acid, which
is derived from kelp. It is white to yellowish brown filamentous,
grainy, and can be in both granular and powdered forms.
PGA is known as an emulsifier, stabilizer, and thickener used in
food industry.
Properties:
1. Hydrophily: easily soluble in water and forming a viscous
solution, mainly used as thickeners, emulsifiers ans stabilizers in
food industry;
2. Acid endurance: PGA can keep its properties in the acid solution
of pH 3~5, so PGA can be widely used in fruit juice;
3. Emulsibility and foaminess, can be used in yogurt, dressings and
stablizing foam in beer.
Applications:
PGA is an excellent food additive derieved from algae, and can be
widely used in both food and pharmaceutical field due to its unique
properties.
Besides the thickening function, PGA is also a surfactant due to
the amphiphilic structure. PGA doesn't form a gel with polyvalent
metal, therefore, it is stable with metal.
1. In Food Application:
1) as a thickener, stabilizer and emulsifier in yogurt and ice
cream, the addition of PGA can make the product soomth and improve
the mouthfeel;
2) as a stabilizer and emulsifier in cheese, PGA makes cheese
puffing and emulsifying well, the mouthfeel is smooth;
3) as a foam stabilizer in beer, PGA can improve and maintain the
foam levels;
4) as a dispersant and emulsifier, PGA is acid stable, therefore,
it canbe used in all kinds of fruit juice, which can keep the
beverage uniform;
5) as texture improver, PGA can be used in flour, noodles and
instant foods;
6) furthermore, PGA can be also used in ketchup, sauce, syrup, etc.
2. In Pharmaceutical Application:
PGA can be used as a stabilizer for X-ray contrast agent, a
protective agent for gastrointestinal mucosa, and a raw material
for cosmetics.
