PGPR

PGPR (polyglycerol polyricinoleate, E476) is a food-grade emulsifier widely used in chocolate and compound chocolate production to reduce viscosity and improve flow properties of molten chocolate mass. It is derived from castor oil and polyglycerol, and works by lowering the yield value of chocolate — the force needed to start the mass flowing — making it easier to mold, enrobe, and coat products with a thinner, more uniform layer.

PGPR is often used in combination with soy lecithin: lecithin primarily reduces plastic viscosity, while PGPR targets yield value, and together they provide optimal flow at lower total fat content. Typical dosage in chocolate is 0.1–0.5% of the total mass. This allows manufacturers to reduce the amount of expensive cocoa butter in formulations while maintaining the same coating thickness and processing behavior. PGPR is approved for use in food products by the EU, FDA, and most international regulatory bodies.

Learn more about PGPR — including dosage guidelines, interaction with other emulsifiers, and effects on chocolate quality — in the articles below.