Propylene Glycol Alginate is a yellowish chemical powder made from plant algae used as a thickening agent in foods. It stabilizes and preserves food, but may cause negative side effects such as stomach upset, allergies, and birth defects.
Propylene Glycol Alginate (PGA) is an additive used primarily as a thickening agent in certain types of foods. It is made from plant algae or certain types of algae, which is processed into a granular, yellowish chemical powder. The powder is added to foods that require thickening. It has been used for many years as a food preservative, and many food manufacturing companies use it in common items.
There are three main reasons for using propylene glycol alginate. First, it thickens the liquid but also stabilizes it. For example, the foam in beer can be stabilized using this chemical just like foamy fruit juices or dairy products. It is also considered an emulsifier, which means it keeps food fresher because it acts as a preservative. Certain foods tend to change color or consistency over a period of time, for example, and this chemical helps slow down that process.
Most types of foods in gel form, such as yogurt, jellies and jams, ice cream, and salad dressings, contain this additive. Certain condiments and chewing gums also contain it, as do some types of cosmetics.
Although it is considered a safe additive, there have been reports of negative side effects. May cause stomach upset and nausea whether swallowed or used on the skin as a cosmetic. When used only cosmetically, it can cause allergic reactions including hair loss, rashes, and eye irritations. Cosmetic use is the most common cause of side effects. Other skin related allergies can occur when using household cleaners that contain this ingredient.
It’s not clear if pregnant women should use this chemical additive because it’s thought to be a teratogen, meaning it can cause birth defects. Because it is easily absorbed through the skin, it is believed that exposure may cause kidney and liver damage. High doses can cause seizures in children. Despite these potential problems, propylene glycol alginate is one of the most widely used chemical additives.
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