How do you freeze durian fruit?

In PHG Ever Fresh Food (M) Sdn Bhd, we have two ways of freezing up a durian, which is blast freezing and nitrogen freezing. The blast freezer has a temperature of -30 c° while the nitrogen freezer can go up to -120 c°.

Blast freezing is usually for durian products that has been processed and without their shell such as durian pulps and durian paste. To do so, the durian pulps are removed from the durian fruit by hand and simple tools such as special machete made for opening a durian. We then run them through strict quality check to remove those pulps that are unhealthy and to be disposed of. The remaining pulps will be set onto trays or sent into the seed removing machine to be made into durian paste. The durian will be cleaned by workers again after coming out of the seed removing machine by hand on a well-lit environment. The paste will then be packaged into air-tight seal via vacuum sealing machine and sent into the blast freezer with the pulps that are arranged on top of the trays where the blast freezer. After that, the pulp will be packed into vacuum-seal bags with a tray.

Nitrogen freezing in the other hand, It’s for whole durian fruit that are intended to be exported to overseas such as China, Hong Kong, U.S.A. and other countries in its original condition. Fresh durians collected from farm will be sent to the factory site and sent into the cleaning machine for simple cleaning, then we will do strict quality check again by hands and clean them. The selected durians are inserted into a steel cage, then pushed into the nitrogen freezer with trolley. Each nitrogen freezer can freeze up to two of the cages within an hour. The frozen durian is then going through another round of strict quality check to remove durian that are broken in the process of freezing and finally they are packed into vacuum-seal bag and a box to be exported to other countries.