Kiwi Fruit Freeze-drying Machine

 

Kiwi fruit freeze-drying machine

The freeze-drying machine is referred to as the freeze-drying machine, which is widely used in the freeze-drying of various vegetables and fruits. The freeze-drying production methods of the freeze-drying machine for kiwi fruit are as follows:

1. Choose fresh kiwi fruit;

2. Peel the skin manually or mechanically and cut it into 4mm thick sheets along the length of the fruit body;

3. Spread the kiwifruit slices evenly in the material tray.

4. Lyophilized processing

4.1 Put the pulp coated kiwi slices into the freezer for pre-freezing. The pre-freezing temperature is set as -30℃ and the pre-freezing time is 4h. The final requirement is that the central temperature of the kiwi slices is lower than the eutectic point and keep it for at least 2h, and the pre-freezing is over;

4.2 Set the vacuum degree at 60Pa. In the initial stage of drying, the heating heat is provided to accelerate water overflow. Set the temperature of the heating plate at 70℃. During strong dehydration, the heating plate temperature is set at 60℃; The heating temperature at the end of drying is set at 50℃.

5. Sealed packaging

The freeze-dried kiwi slices are sealed and packed separately to prevent them from being moistened in the air and returning to softness, which will affect the crisp taste.

 

The refrigeration system of the freeze-dryer is an important part. Theoretically, the refrigeration system consists of refrigeration compressor, condenser, evaporator and thermal expansion valve. It mainly supplies cold quantity for the pre-freezing of the products in the drying oven. And provide cooling capacity for sublimation water vapor captured by the cold trap coil in the later period.

Freeze dryer design when considering particularity to the requirement of refrigeration, the refrigeration system is mainly composed of refrigerant compressor, condenser, oil separator, water, filter drier, intercooler, depending on the liquid mirror, solenoid valve, hand valve, expansion valve, evaporator, gas-liquid separator, air filter, pressure gauge, pressure control relay, the energy regulator, the relief valve, cooling pipe, etc.

The freeze-drying technology (freeze-drying for short) is a new food processing technology, which is very healthy and has no harm to human body. It is different from ordinary dry how to see:

Ordinary drying is one of the ways to keep things from going bad. There are many drying methods, such as sun-drying, boiling drying, drying, spray drying and vacuum drying. However, these drying methods are carried out at temperatures above 0℃ or higher. The product obtained by drying is generally smaller in volume and harder in texture. Some substances are oxidized and most of the volatile components will be lost. Microorganism will lose biological vitality, dry material is not easy to dissolve in water, etc.

And the principle of freeze-drying is easy to understand, to put fresh fruits and vegetables in around 50 ℃ below zero in the freeze dryer for frozen, such as fruits and vegetables after freezing, for drying oven, vacuum slightly increased temperature after vacuum forming, so you can make the fruit and vegetable directly sublimation of ice into water vapor from fruits and vegetables, and leave the fruits and vegetables "skeleton" remains unchanged and porous volume, More than 95% of the moisture can be removed by lyophilization.

Lyophilized techniques are performed at low temperatures without denaturing or deactivating proteins, microorganisms, etc. When drying at low temperatures, the loss of some volatile components in the material is very small, suitable for some chemical products, medicines and food drying.

During lyophilization, the growth of microorganisms and the action of enzymes cannot be carried out, so the original character can be maintained. Due to the drying in the frozen state, the volume is almost unchanged, keeping the original structure, and no condensation phenomenon will occur. Since drying takes place under a vacuum, there is very little oxygen, so some easily oxidized substances are protected. Drying can eliminate more than 95-99% of the moisture, so that the dried products can be stored for a long time without deterioration.

Parameter:                                                                                                                                                                                   

Model	KFD-1	KFD-2	KFD-5	KFD-6	KFD-8	KFD-10
Capacity (Kg/Batch)	10	20	50	60	80	100
Shelf Area (㎡)	1.1	2	5	6	8	10
Shelf Size (Mm)	500*400	700*500	800*895	950*800	1000*800	1190*800
Shelf Quantity (Layer)	5+1	6+1	7+1	8+1	10+1	11+1
Max Catch Water(Kg)	15	30	75	90	120	150
Ultimate Vacuum	1	1	1	2	2	2
Electricity(Kw)	12	16	22	34	34	41
Size(Mm)	2200*1000*2000	2500*1000*2300	2200*1200*2400	3500*1400*2430	3500*1400*2430	4540*1400*2450
Weight(Kg)	1500	2000	2500	3000	3500	3800

Our service

Pre-sale:

* As soon as we get your inquiry, we will always reply to your email on time and try our best to recommend you the most suitable freeze dryer. Detailed tech-info will also be provided for you.

* We can do sample test for customers.

After-sale:

* If possible, please do come to our factory and we will teach workers the whole process of freeze drying. The most appropriate time needed for freeze drying will be tested by us.

* We will keep in touch with you, to make sure every parts of the freeze dryer work well. One year warranty, free online service for abroad customers.

 

Certificates

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