How to dehydrate Vegetable/ Dehydration of Vegetables Process

Jul 30, 2022

How to Dry Vegetable at Home

vegetables in surplus areas are processed into dehydrated vegetables and sold to areas where vegetables are lacking, so that not only can you eat what you want in every season. The taste and quality of the food do not change, so how do we dry vegetables? Next I will share with you dehydrate vegetables process.

The first step: raw material selection

Choose vegetable varieties with rich meat quality. Before drying, vegetables should be strictly selected, and the parts with diseases, insects, rot and shriveled parts should be eliminated. 80% of the maturity is appropriate, overripe or underripe should also be picked out. Except for melons, the seeds of which are removed, other types of vegetables can be washed with clean water, and then placed in a cool place to dry, but should not be exposed to the sun.
The second step: cutting, blanching
The washed raw materials are cut into slices, wires, strips and other shapes according to product requirements. When pre-cooking, it varies according to the raw materials. For those that are easy to cook, put them in boiling water, and for those that are not easy to cook, put them in boiling water (the water temperature is generally above 150 ℃) and cook for a while. The general blanching time is 2 to 4 minutes. Leafy vegetables are not blanched.
The third step: cooling, draining
Precooked vegetables should be cooled immediately (usually with cold water) to quickly reduce to room temperature. After cooling, in order to shorten the drying time, a centrifuge can be used to shake off the water, or a simple manual method can be used to squeeze it.
The fourth step: vegetable dehydration
Put the processed vegetables on a clean tray, and then place them in a ventilated place under the sun. During the dehydration process, we have to turn the vegetables over from time to time to ensure that the vegetables can be better dehydrated.
However, sun dehydration is susceptible to weather, and dried vegetables are susceptible to contamination. Long dehydration times usually take a week. The moisture content of dried vegetables cannot be controlled, and the dehydration of various parts of the vegetables is uneven. Therefore, if we need to dry a large number of vegetables, the method of dehydration in the sun is too time-consuming, so I recommend using a professional vegetable dehydrator. Using a professional dehydrator is easy.
Dehydration high-yield vegetables
Put the vegetables into the material tray, insert the material tray into the material cart and push it into the dehydration room, and close the sealing door to start dehydration production. The dehydration temperature range is 65 ℃ - 85 ℃, and the dehydration temperature is divided into different temperatures, and the temperature is gradually lowered. Generally, the dehydration time is about 8-10 hours to complete a batch.
Vegetable dehydration machines
Next I will introduce you to some vegetable dehydrators. We determine different temperature, time, color and moisture content during dehydration according to different varieties. I'm bringing you three vegetable dehydrators - mesh belt vegetable dehydrator,vegetable dehydrator room and all-in-one vegetable dehydrator.
In terms of output, the continuous mesh belt vegetable dehydrator machine is suitable for manufacturers with large output. Its output is 300-2000kg/h. The output of the vegetable dehydrator room machine is smaller than that of the mesh belt vegetable dehydrator machine, and the output is 100-5000/batch. The output of the all-in-one vegetable dehydrator machine is the smallest, and its output is 100-1500/batch. It is suitable for agricultural plants or small processing plants. Oven length and mesh belt layers can be customized. We can choose and match them reasonably according to our own processing requirements.

1. All-in-one vegetable dehydrator machine

The first vegetable dehydrator machine is the all-in-one vegetable dehydrator machine with the smallest yield.
The dehydration principle is the same as that of the vegetable dehydrator room machine. The all-in-one vegetable dehydrator machine is equipped with a cart with trays and tray racks. When dehydration vegetables, we put them in trays, put them on the tray racks of the cart, and then push them into the vegetable dehydration chamber for dehydration.
The heat source of the vegetable integrated dehydrator is air energy. The heat in the air is absorbed by the heat pump compressor. After compression and release, a large amount of high-temperature hot air can be obtained, so as to achieve continuous and uniform dehydration and processing of vegetables. The operation of this all-in-one dehydration unit is relatively simple, simply plug in and dry.

Components of all-in-one vegetable dehydrator machine

One set all-in-one vegetable dehydrator machine contains: power jack, water outlet,exhaust air outlet, supporting wheels, PLC controller pancl, door lock, observation window,circulating air inlet, outlet for hot and dry air, PP tray, stainless steel tray, supporting racks for trys. The vegetable all-in-one machine has compact structure, good energy-saving effect, wide application range, high dehydration quality, convenient operation, simple installation and disassembly. It is the best dehydration equipment for small businesses, dehydration experiments and scientific research. The user only needs to connect the power to use, it is the easiest to operate vegetable dehydrator.

Technical parameters of all-in-one vegetable dehydrator machine

All-in-one vegetable dryer list
type	machine size(MM)	Capacity (KG)	power	total power（kw）	Qty of cart	Qty of tray	cart size(MM)	tray size(MM)
1P	1180×680×1800	50-80	1	1	—	15	—	600×800
3P	2100×930×2100	120-300	3.5	3.5	—	40/60	—	600×800
8P	4000×1960×2050	650-1000	8	8	8	232	600×800	600×800
The drying machine can be equipped according to the user's requirement and the production demands.

Advantages of all-in-one vegetable dehydrator machine

1. Stainless steel 304 material. The whole machine uses stainless steel material, can work a long time, and keep better heat preservation, bottom have wheeler, can move easily.
2. Great energy saving. Heat pump system design, low energy consumption, can save 75% energy than traditional electricity element heating.
3. Wide application easy operation. Fit for wide application, seafood, fruit, vegetable, spice, herbs, etc all can use it to dry.
4. Gentle dehydration. Temperature range 40-80°C, low temperature dehydrate processing can better keep material nutrition, during dehydration, no need to move the machine.

2. Vegetable dehydrator room machine

The second type of dehydrator is the vegetable dehydrator room.
The vegetable dehydrator room machine is equipped with a trolley with trays and tray racks. When we dry the vegetables, we put the vegetables in the tray, on the tray rack of the cart, and push it into the vegetable dehydration chamber to dry. Vegetables are putted on the shelf car and enter the closed cycle dehydration room for dehydration without any pollution in the process. The heat source of the vegetable dehydrator room is air. The heat in the air is absorbed by the heat pump compressor. After being compressed and released, a large amount of high-temperature hot air can be obtained, so as to achieve uniform dehydration and processing of vegetables.

Components of vegetable dehydrator room machine

One set vegetable dehydrator room machine contains: heat pump dehydrator host, dehydrator chamber, fan frame with fan, trolley with tray. The dehydrator chamber is used 100mm polyurethane insulation board, supporting 304 stainless steel trolleys and trays. Put the vegetables into the material tray, insert the material tray into the material cart and push it into the dehydration room, and close the sealing door to start dehydration production. The dehydration temperature range is 65 ℃ - 85 ℃, and the dehydration temperature is divided into different temperatures, and the temperature is gradually lowered. Generally, the dehydration time is about 8-10 hours to complete a batch.

The working principle of vegetable dehydrator room machine

The vegetable heat pump dehydrator machine uses the reverse Carnot principle to let the hot air circulating blower dry the vegatable. Heat Pump Dehydrator Compressor Heat Exchanger Blocked Radiator (External to Machine). Compressor and other equipment make up the refrigerant circulation system. The fan impeller rotates, the outside air enters the oven, passes through the heater, forms hot air, and then enters the studio through the gap of the air distribution plate, and a large amount of hot air in the circulating flow continues to enter the new air inlet for supplementation. The moisture discharged after recovery is discharged from the exhaust port. The whole cycle makes the vegatable heated evenly and achieves the purpose of dehydration.

Technical parameters of vegetable dehydrator room machine

heat pump vegetable dryer list
type	machine size(MM)	Capacity (KG)	power	Qty of fan	fan power	total power（kw）	Qty of cart	Qty of tray	cart size(MM)	tray size(MM)
3P A	3500×2200×2200	200-400	2.25	6	0.25/pc	3.75	6	78	670×810	600×800
8P A	5300×2200×2800	450-750	6	12	0.37/pc	10.44	6	156	1210×870	600×800
15P	7500×3000×2800	900-1500	11.25	12	0.55/pc	17.85	12	312	1210×870	600×800
1P D	1180×680×1800	50-80	1	—	—	1	—	15	—	600×800
3P D	2100×930×2100	120-300	3.5	—	—	3.5	—	40/60	—	600×800
8P D	4000×1960×2050	650-1000	8	—	—	8	8	232	600×800	600×800
The drying machine can be equipped according to the user's requirement and the production demands.

Advantages of vegetable dehydrator room machine

1 Wide application. Suitable for vegetable, fruit, seafood, spice etc different kinds of material.
2 High drying capacity. Each hour can drying 3-4kg water.
3 Better drying effect. Can better keep material shape , color , nutrition etc.
4 Simple operating. PLC touch screen control panel , can set up temperature, humidity in advance
5 Low energy consumption. Heat pump system, can save 70% energy.

Other application areas of vegetable dehydrator room machine

Heat pumps dehydrator machine can be used in many applications, in addition to dehydration vegetables can also be used in agriculture, industry, seafood, grain, herbal medicine, construction, paper products, condiments, mineral industry, etc.
1. Dried vegetables such as radish, lettuce, pumpkin, carrot, spinach, cassava, etc.
2. Fruits such as apples, lemons, mango slices, dried longan, dried longan, etc.
3. Dried meat such as sausage, beef, duck, ham, etc.
4. Others it can dry noodles/wooden/incense/herbs/floss etc.
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