Raw cocoa powder is extremely sensitive to changes in temperature and humidity during transportation. To solve this problem, we offer isothermal insulation for containers (Embatuff), palletized products (Embacover) and boxes (box liner).

What is cocoa powder?

Cocoa powder, sold as pure cocoa powder, is what is left over after separating cocoa solids (components of chocolate low in fat) from the cocoa butter (high in fat). Cocoa liquor comes from melting cocoa butter and cocoa solids together.

The cocoa butter is pressed to remove part of the fat and leave a solid material known as cocoa press cake. These cakes are then ground to produce cocoa powder.

Temperature, humidity and solar radiation in transporting cocoa powder

Cocoa powder is hygroscopic, meaning it is liable to absorb moisture and water vapour from the air. It also absorbs odours and is subject to autolysis, self-heating, decomposition and mould. That is why it is transported in paper bags which must be stored in a dry, clean space free from any strong odours.

The polyphenols of cocoa powder have neuroprotective, antioxidant, antimicrobial and cardioprotective properties. However, they have biomolecules which are very sensitive to photo-oxidation or thermal oxidation. For this reason, care must be taken in their transportation to avoid solar radiation or sudden temperature changes.

As shown in the study Storage-induced caking of cocoa powder, in cocoa powder with a high percentage of fat (21%), there was significant caking observed at 40 °C as the fat melted and migrated towards the surface of the cocoa particles making them sticky and prone to caking.

We must remember that the melting point of cocoa butter is around 38°C and begins to soften at 35°C, making the ideal transportation temperature between 15 and 25°C.

Thermal solutions for transporting cocoa

As we have mentioned above, it is crucial to maintain optimal temperature, moisture and hygiene conditions when transporting cocoa. As a result, we offer three isothermal solutions:

• Embatuff thermal liner. Thermal lining for the inside of sea containers. An excellent, cheaper alternative to refrigerated containers.
• Embacover. Isothermal insulation for palletized products - it helps to maintain the temperature of and prevent heat transfer when outside of the hold.
• Isothermal covers for boxes (box liner).

All three products provide similar benefits:

• Thermal protection: optimal temperature control for your shipments.
• Protection against humidity: Isolates cargo from container rain and reduces the relative humidity of the cargo.
• Odour and dirt isolation: Single-use cover which prevents the spread of odours and avoids the need to wash containers afterwards.
• Easy to put on.
• Cost - saving.

If you would like more information on the packing of cocoa powder, please contact our experts for advice on the best solution.