High grade PGPR in chocolate

Palsgaard® 4150 has set a new standard for PGPR - Polyglycerol Polyricinoleate (E476), which is widely used by the chocolate and confectionary industry. Palsgaard® 4150 is a new generation of PGPR, which helps improve various processing challenges. It combines high functionality with a flavour-neutral character, improves moulding and reduces the yield value. Palsgaard® 4150 is the best emulsifier for high quality chocolate products, when looking for the optimal process combined with high quality.

High Performance

Palsgaard® 4150 is a highly concentrated PGPR product, which can be added at a lower dosage than standard PGPR, giving optimal flow properties of the chocolate mass. The higher performance of Palsgaard® 4150 may also be utilised for further reduction of the chocolate´s acute fat content at a given dose of PGPR.

 

Chocolate - Viscosity curve

Batch to batch consistency

PGPR, in general, and especially Palsgaard® 4150, has a dramatic impact on the flow properties of liquid chocolate. It is therefore important for chocolate manufacturers that emulsifiers have uniform batch-to-batch performance.

Yield value reduction

It is generally understood that PGPR works by lowering the Casson yield value of the chocolate, whereas the Casson plastic viscosity is mainly reduced by the addition of lecithin or ammonium phosphatide. The yield value can be explained in terms of friction between the particles in liquid chocolate, and is defined as the force required to initiate the flow of the chocolate mass.

Less fat and lower costs

Cocoa butter is an expensive raw material for chocolate manufacturers. By using Palsgaard® 4150 the chocolate recipe has lower costs in terms of less cocoa butter but also gives the benefit of having less fat. An example of three different chocolates were manufactured using the recipes as shown in the figure below, with and without the application of Palsgaard® 4150.

 

The flow curves show the yield values and plastic viscosities of the three different chocolates. The addition of 0.20% Palsgaard® 4150 substitutes 4% cocoa butter in the chocolate.

 

Chocolate - comparing milk chocolate

 

Chocolate - Flow curve

Chocolate for moulding

Chocolate made for moulding often has a lower fat content. The addition of Palsgaard® 4150 can solve various processing problems such as;

 

  • No air bubbles

    The use of Palsgaard® 4150 facilitates the removal of air bubbles during the vibration step of the moulding process.
     
  • Improved moulding

    Chocolate with Palsgaard® 4150 is easily and rapidly distributed into the moulds, improving overall moulding time and end result.
     
  • Moulding with inclusions

    If nuts, crispies or fruit pieces are added, the chocolate usually has a lower yield value in order to totally cover the inclusions. Additional cocoa butter is often added to overcome these problems, however, much smaller quantities of Palsgaard® 4150 has the same effect and cost savings are thereby also gained.

Enrobing with low fat chocolate

Enrobing is one of the most viscosity dependent processes in chocolate production, where the flow properties must be adjusted very precisely in order to obtain the desired thickness of the chocolate coating. Often chocolates with a high fat content are used to obtain the desired flow properties for enrobing. The use of Palsgaard® 4150 enables the desired flow properties to be achieved for low fat chocolates.

No off-flavours

The use of Palsgaard® 4150 is free of so called off-flavours. This quality is especially important for chocolates containing low quantities of cocoa liquor, such as milk- and white chocolates.

Flexibility in production

With Palsgaard® 4150 it is possible to add higher quantities of PGPR to the recipe without affecting the flavour of the chocolate product. This allows much greater flexibility in chocolate production, such as solving problems associated with poor flow of the liquid chocolate mass.

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