Prospect of drying and drying technology for fruits and vegetables

1. research status of microwave drying technology for fruits and vegetables in China

The drying devices studied and reported in various parts of China include microwave drying mechanical equipment, greenhouse type, collector type, combination type of collector and greenhouse, solar drying oven, solar drying room and other forms. At present, there are greenhouse type, collector type, microwave fruit and vegetable dryer, solar greenhouse + high efficiency collector + automatic humidity difference ventilation dehumidification workshop, hot blast stove mixed drying equipment and solar energy with high temperature heat pump automatic drying room.

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Microwave vacuum drying of banana slices

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The microwave vacuum drying equipment technology was used to develop new banana drying products, and the optimum microwave vacuum drying technology for banana slices was obtained. microwave vacuum drying   The effects of vacuum, microwave intensity and slice thickness on color difference, brittleness, swelling rate and sensory quality of banana slices were studied by three factors and three levels L9 (34) orthogonal design. The technological parameters of microwave vacuum drying of banana slices were optimized by comprehensive optimization method. The quality of dried banana slices obtained by different microwave vacuum drying process parameters is obviously different. The optimum point of microwave vacuum drying process is determined as follows: vacuum degree - 80 kPa, microwave intensity 14 W/g, slice thickness 12 mm. The quality of dried banana slices obtained under this process condition is better than that of microwave drying. And vacuum frying. It is fea...
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Screw extruder in food processing

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Extrusion processing, which is one of the most important processing methods in food processing, is a process that involves the forced flow of material under various conditions and through a forming orifice or screen at a predetermined rate. Microwave drying machinery Food extruder  technology allows for different functions such as mixing, cooking, forming, conveying, puffing and drying, depending on the design and processing conditions of the extruder. At present, extrusion technology has been widely used in the production of pastes, breakfast foods, bread crumbs, biscuits, crispy foods, and extruders used in food processing. There are three main types: piston extruders, roller extrusions. Machine and screw extruder. Screw extruder in food processing 
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Extraction of residual oil from fragrant peanut oil filter cake（2）

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1.2 Filter cake crushed into the leaching workshop After the peanut cake was pulverized, it was mixed with the filter cake in a ratio of 1:1, uniformly added to the leacher through an automatic feeder, and leached with a solvent. The residual oil in the phospholipid can be extracted, and the phospholipid can be part of the cockroach. In operation, the pulverized particles of the cake have a diameter of 2 to 4 mm, and the material is automatically fed at a rate of 100 kg/h, and the addition is as uniform as possible. Microwave drying machine This solution solves the problems encountered in the previous schemes well; at the same time, it ensures the production effect. By comparison, the method has the following advantages: (1) After passing through the high temperature, the filter cake is directly mixed with the cake into the dip Extraction of residual oil from fragrant peanut oil filter cake（2） 
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