With the increasing demand for healthy and more nutritious snacks, the variety of nut snacks positioned as "healthier" choices has also increased. Many people want to make dried fruit at home. Zhengzhou Keda Machinery Instrument Equipment Co., Ltd. is for you. The following dried fruit production machines are available: vacuum drying oven, blast drying oven and freeze dryer. Here's how to make dried fruit.

 

1. How to make dried fruit - apples using a drying oven:

 

Advantages and functions of dried apples:

Can be used as a beauty product: After dehydration, the water in the apple is lost, but the vitamins in it are partially retained. The content of vitamin B, vitamin C, and vitamin E in the dried apple is very high. After these vitamins enter the human body, they will oxidize the tissue and skin. And scavenging free radicals have an important impact on the skin damage, and can also whiten, rejuvenate the skin and relieve rough skin and other problems.

 

For health only: Dried apples contain a lot of dietary fiber. When dietary fiber enters the intestine, it can promote gastrointestinal movement, help digestion, absorb water, increase the volume of stool, relieve the trouble of stool and constipation, and reduce the accumulation of toxins in the body. Good for health. Dried apples are rich in potassium. Eating foods rich in potassium can effectively balance blood pressure, protect blood vessels and reduce the probability of stroke; the fruit acids and vitamins in apples can also effectively absorb cholesterol and reduce arteriosclerosis and cardiovascular disease. risk of occurrence.

 

It can enhance the body's immunity: Apple is a kind of nutritious fruit. Dried apples are rich in vitamins, minerals, proteins, carbohydrates, anthocyanins, carbohydrates, organic acids and other nutrients. Eating apples can supplement the nutrients needed by the body, enhance the body's immunity, and also have the effect of preventing colds.
 

2. How to make dried fruit - bananas using a drying oven:

 

The efficacy and role of dried bananas:

1. Eating some banana chips in moderation can prevent high blood pressure. Because banana chips are rich in minerals, after eating them, they have the effects of reducing swelling, reducing blood pressure, and maintaining the balance of potassium in the human body.

2. Eat some banana slices in moderation, as well as control blood pressure. This substance has the effect of lowering blood pressure and has a certain protective effect on the inner wall of our arteries, so eating it is also very effective in lowering blood pressure. .

3. After eating banana slices, it also has a certain effect on improving immunity and supplementing protein. The protein contained in banana chips may be very high. After eating, people can supplement protein and other benefits.
 

How to make dried fruit with a dryer:

 

Wash the apple and cut it into 4 pieces, remove the core, cut the apple into very thin slices, add 1 tablespoon of lemon juice and stir well, soak the sliced apple slices in water for 15 minutes; slice the banana, above Add a little sugar, neatly place it on the baking tray with apple slices and other fruits; preheat the oven to 100°C up and down, put the baking tray or grill into the oven, you can put two trays at a time, and place them on different levels That's it. Close the oven door and bake for about 2 hours, until the moisture is completely dry; after the fruit is baked and cooled, the fruit will become crispy, remove it from the baking tray or grill, and put it in an airtight box if it is not to be eaten immediately save in.

 

How to store homemade dried fruit:

 

Store in a dark, dry and low temperature place. The lower the storage temperature, the longer the storage period, 0-2 degrees is the best, but generally not more than 4-10 degrees. The drier the air, the better, and its relative humidity should preferably be below 65%. It is vacuum packed to extend the shelf life of the product. In addition, pay attention to moisture and rain to stop bugs and rats from biting.

Principle of vacuum drying oven:

 

The vacuum drying oven is to heat and dry the dried materials under vacuum conditions. It uses a vacuum pump to extract air and dehumidify, so that a vacuum state is formed in the working room, the boiling point of water is reduced, and the drying speed is accelerated. Widely used in biochemistry, chemical pharmacy, medical and well being, agricultural scientific research, environmental safety and different research purposes, for powder drying, baking and disinfection and sterilization of assorted glass containers. It is very suitable for fast and environment friendly drying of heat-sensitive, simply decomposed, easily oxidized substances and complex composition items.

 

Advantages of making dried fruit in a vacuum drying oven:

①The vacuum environment greatly reduces the boiling point of the liquid that needs to be driven off, so vacuum drying can be easily applied to heat-sensitive substances;

 

②For samples that are not easy to dry, such as powder or other granular samples, vacuum drying can effectively shorten the drying time;

 

③ Various mechanical parts or other porous samples with complex structures are cleaned and dried by vacuum drying, and no residual substances are left after they are completely dried;

 

④ Safer to use - under vacuum or inert conditions, the possibility of oxides' thermal explosion is completely eliminated;

 

⑤Compared with ordinary drying relying on air circulation, powder samples are not blown or moved by flowing air;
 

The principle of blast drying oven:

 

Blast drying oven: adopts air conditioning, forced internal circulation ventilation, and balanced temperature adjustment. The drying oven adopts PT100 platinum resistance temperature sensor, digital temperature regulator for temperature control, sensitive temperature control, easy operation and reliable performance. The figures directly display the working temperature, which is intuitive and easy to read. The drying oven is widely used for melting, drying or other heating of samples. The maximum working temperature is 300℃, and the temperature accuracy can reach ±0.1℃. Electric heating constant temperature blast drying oven is suitable for measuring moisture in coal, drying articles, drying heat treatment and other heating purposes

② The overall operation of the interior, from storage.

 

Advantages of making dried fruit in blast drying oven:

① The box body is processed by CNC machine tools, and the box door is opened up. This design is very convenient and easier to operate.

 , heating, testing and drying are carried out in an environment without oxygen or full of inert gas, so it is not easy to oxidize, and the integrity of the sample is better preserved.

 

③The circuit system adopts door opening, which is convenient for maintenance and repair.

 

④The inner tank is made of SUS304 stainless steel plate, and the outer shell is treated with plastic spraying, which makes the surface appear smoother and more beautiful.
 

Freeze dryer principle:

Freeze drying is a drying technology using the precept of sublimation. It is a process during which the dried materials is rapidly frozen at low temperature, after which the frozen water molecules are immediately sublimated into water vapor in an acceptable vacuum environment. The substance is always at a low temperature (frozen state) earlier than drying, and the ice crystals are evenly distributed within the substance. The sublimation course of will not trigger condensation as a end result of dehydration, and avoid unwanted facet effects such as foaming and oxidation caused by water vapor.

 

Advantages of freeze-drying to make dried fruit:

 

①Drying is carried out at low temperature, so it is especially suitable for heat-sensitive substances, so that it will not denature or lose vitality.

 

②Drying at low temperature, less loss of volatile components in the material.

 

③The growth of microorganisms and the action of enzymes cannot be carried out, and the original properties can be maintained.
 

④Drying under vacuum conditions, the oxygen is very little, and the oxidizable substances are protected.

 

⑤ The substance is dried under freezing, and the volume is almost unchanged after drying, and no shrinkage occurs. The substance is loose and multi-sponge. After adding water, it dissolves rapidly and restores its original properties almost immediately.

 

⑥ Exclude about 90% to 95% of moisture when drying, and the product can be stored at room temperature for a long time after drying.

 

If you want to order a dryer, you can choose Zhengzhou Keda Machinery Instrument Co., Ltd. We are a modern production enterprise dedicated to R&D, production, sales, installation and after-sales. Factory direct sales, high quality and low price, welcome to call to consult some relevant information.