¿Qué es Polyglycerol Polyricinoleate PGPR (E476)? Aplicaciones, dosis, alternativas y especificaciones

Polyglycerol Polyricinoleate, abbreviated as PGPR, es un non-ionic polymeric surfactant produced by the esterification of polyglycerol with condensed castor aceite fatty acids. It belongs to the category of polyol fatty acid esters, with extremely important application value in the global industria alimentaria, especially in chocolate manufacturing. Its EU E number is E476, INS number is 476, and CAS number is 68936–89–0 (also recorded as 29894–35–7 in some literature). In terms of chemical structure, PGPR consists of a short-chain polyglycerol backbone connected by ether bonds, with ricinoleic acid side chains connected by ester bonds. Ricinoleic acid es una unsaturated fatty acid que contiene one double bond and one hydroxyl group. This unique comb-like molecular structure endows PGPR with strong lipophilicity, enabling it to effectively reducen the yield stress and plastic viscosidad of chocolate masses. PGPR appears as a yellow to amber highly líquido viscoso, odorless or con una slight olor característico, con buen thermal stability. It is strongly lipophilic, insoluble en cold water and ethanol, soluble en hot glycerol and hot aceites and fats, and soluble en diethyl ether and hydrocarbons. As a non-ionic surfactant, PGPR es un W/O emulsionante con una low HLB value of approximately 3–4. PGPR was first developed by the British Industria Alimentaria Research Association in the 1960s. In 1974, JECFA first evaluated its safety and set an ADI of 7.5 mg/kg bw/day. After decades of development and application, PGPR has become an indispensable functional additive in the modern chocolate industry, known as the key rheology modifier for chocolate flow. PGPR is prepared from plant-derived glycerol and ricinoleic acid, aligning with clean-label and sostenible consumption trends.

Polyglycerol Polyricinoleate se reconoce como an indispensable viscosidad modifier in the chocolate industry, holding an irreplaceable position in chocolate, confectionery, and baking industries. Its most outstanding core advantages lie in its excellent viscosidad-reducing and yield stress-lowering effect, significant fat-saving ability, and high processing friendliness.

Excelente Yield Stress and Viscosidad Reduction Effect: PGPR‘s most core function is its ability to significantly reducen the yield stress and plastic viscosidad of chocolate masses. Its comb-like molecular structure adsorbs onto the surface of solid particles como cocoa, sugar, and milk polvo, reducing friction and cohesion between particles. This transforms molten chocolate from a plastic fluid toward Newtonian fluid behavior, greatly improving flowability. When used in combination with lecithin, PGPR exhibits a significant synergistic effect, further reducing shear stress and optimizing flowability integrally.