Fruits are an integral part of the human diet, they are rich in vitamins, minerals and fiber and are very important for our health. However, fruits often encounter some problems during storage and transportation, such as rot and short shelf life. In order to solve these problems, the screw press dehydrator came into being. This article will explore the use of screw press dehydrators in different fruit treatments and their impact on the fruit.

First, the working principle of the screw press dehydrator

The screw press dehydrator is a device that strips the water out of the fruit by mechanical force. Its working principle is based on centrifugal force and pressing force. It mainly includes the following steps:

Feeding: Put the cut fruit pieces or berries into the feeding port of the screw press dehydrator.

Pressing: The fruit is squeezed from the solid matter inside the machine by a rotating screw.

Separation: Water and solid matter are separated under the action of centrifugal force. Moisture is discharged through the water outlet, while dry solid matter is discharged through the discharge port.

Repeat: The entire process continues until most of the water has been removed from the fruit.

2. Application of screw press dehydrator in fruit processing

dehydration of grapes

Grapes are a fruit with a high water content and are commonly used to make raisins and wine. The screw press dehydrator can effectively strip excess water from grapes, thereby reducing the risk of rotting, extending storage life, and improving the quality of dried grapes and wine.

dehydration of apples

Apples are susceptible to oxidation during processing and storage, which can lead to browning and loss of quality. The screw press dehydrator can remove the moisture in the apples, reduce the chance of oxidation, keep the apples fresh and taste good, and is suitable for making applesauce, jam and juice.

dehydration of oranges

Oranges are a fruit rich in vitamin C, but excess moisture can cause rot and damage during storage and transportation. The screw press dehydrator can reduce the moisture in oranges, extending their storage life while maintaining their vitamin C content.

Dehydration of strawberries

Strawberries are a fruit susceptible to mold damage because moisture tends to accumulate on their surface. The screw press dehydrator can remove excess water from strawberries, reduce the growth of mold, extend the shelf life of strawberries, and make them more suitable for sales and processing.

Dehydration of tomatoes

Tomato is a commonly used food ingredient, but its high moisture content makes it prone to rot. Through the screw press dehydrator, the moisture in the tomato can be stripped to produce concentrated tomato paste, tomato juice and dried tomato, which prolongs the shelf life of tomato products.

3. The influence of screw press dehydrator on fruit

Although screw press dehydrators have many advantages in fruit processing, there are also some potential effects that need to be noted:

Nutrient Loss: The screw press dehydrator may cause the loss of some water-soluble vitamins and minerals because these nutrients are normally dissolved in water.

Taste changes: Some fruits, especially those that are crisp and tender, may change in texture and taste during the dehydration process as they lose some of their moisture.

Concentration effect: Dehydrated fruits are usually more concentrated, which may result in a stronger taste. Recipes and dosage need to be adjusted according to different products.

in conclusion

The screw press dehydrator is a very useful equipment in fruit processing, which can help extend the storage period of fruits, reduce rot, and improve product quality. However, potential nutritional losses and taste changes need to be noted when using them to ensure the quality of the final product. The screw press dehydrator has a wide range of applications and can meet the processing needs of different fruits, contributing to the development of the fruit industry and the diversification of fruit products.

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