Durian, known as the "King of Fruits", has won the love of many diners with its unique aroma and rich taste. However, durian has a strong seasonality and a short shelf life, which greatly limits its consumer market. The application of lyophilization technology provides a perfect solution to solve this problem.
First of all, lyophilization, also known as vacuum freeze-drying technology, is a drying method that directly sublimates and removes the moisture of materials at low temperatures. This technology can greatly preserve the nutrients and original flavor of food, and is a major innovation in the field of food processing.
For durian, the freeze dryer can not only extend its shelf life and reduce the problem of breaking the grade caused by the change of seasons, but also maintain the unique aroma and taste of durian to a large extent, which is undoubtedly a great blessing for the food processing industry.
Specific to the operation process of the durian freeze dryer, the first is the pre-freezing stage, where the fresh durian pulp is frozen at a very low temperature to ensure that the moisture in it is completely solidified; This is followed by the initial drying stage, where the ice crystals are directly sublimated by reducing the pressure, thereby removing some of the water; Finally, there is the post-drying stage, which further reduces the relative humidity in the drying chamber to ensure that the remaining tiny moisture in the durian is also completely removed.
In this process, temperature control is particularly crucial. Too high a temperature may damage the nutrient structure of durian, while too low a temperature will affect the drying efficiency. Therefore, a high-quality durian freeze dryer must have a precise temperature control system to ensure that every step of the operation can be completed in the best condition.
In addition, due to the strong smell of durian, the cleaning and odor treatment ability of the freeze dryer is also very important. A good design should take into account the ease of cleaning and maintenance of the equipment, as well as an efficient air filtration system to ensure consistent quality during continuous operation.
In terms of environmental protection and energy saving, modern durian freeze dryers are also continuously optimized. The use of more advanced refrigeration technology and more efficient vacuum pumps not only improves energy efficiency, but also reduces operating costs and reduces environmental impact.