Method of drying yam:

  With the improvement of people's living standards, yam is also used as food by more and more people in their daily diet. Yam has high water content and is not suitable for long-term storage, so many people will dry yam in the sun, which can extend the storage time of yam. Merchants' deep processing of yam further improves the economic value of yam. To ensure that the dried yam appears white and to ensure that the nutritional value and internal components of the yam are not destroyed, a good drying process is a key. Currently, the best way to dry yam is to use a dryer. Next, I will share with you the specific method of making dried yam.

Traditional drying method of yam:Sun dried yam:

• 1. First, wash the yam with clean water
• 2. Peel off the skin of the yam
• 3. Use a knife to cut the yam into slices
• 4. Soak the yam slices in water at 90°C for half an hour (the purpose is to soak out the mucus of the yam).
• 5. Then put the yam slices on the drying rack and put them in the sun to dry
• 6. After drying for 2~3 days, the yam has been dried
• 7. Seal the dried yam with a sealed bag, which can be stored for a long time.

How to use a dehydrator to dry large quantities of yam:

1. Raw material selection
Choose yam with uniform thickness, smooth surface, no pests, and no frostbite.
2. Cleaning
Soak the yam in the pool for 10-15 minutes, brush off the impurities on the surface, and rinse with water for 2-3 times.
3. Peel and cut into pieces
Use a peeling machine or manually peel the yam, and then slice it. The beauty and completeness of manual slices are better than that of machine slices. The thickness of the machine slices is uniform and the efficiency is high.
4. Drying
The first stage, the heating stage: spread the sliced yam on the baking shelf and push it into the drying room. Start the dryer and heat the temperature in the box to 50°C for 0.5-1.5h. When the humidity rises, the dehumidification starts, and the constant temperature can be maintained during dehumidification.
The second stage, constant rate drying and dehumidification stage: This stage can be divided into two stages, high humidity and low temperature stage, medium humidity and medium temperature stage.
During the high-humidity and low-temperature stage, the temperature range is 40-50℃, which can avoid the change of the color of yam caused by high temperature and humidity. Observe the change of water vapor on the surface of the yam and dehumidify at any time. The time is 3-3.5h.
In the mid-humidity and mid-temperature section, the temperature is 50-60°C. At this stage, fresh air and dehumidification should be appropriately replaced, and the humidity should be adjusted reasonably.
The third stage, the speed reduction and shaping stage: the temperature in this stage is 60-70°C, not more than 70°C in the early stage, and not more than 75°C in the later stage, and the time is 5-7h.
5. Packaging:
After the yam is dried, the moisture content is generally maintained at about 10%, and unqualified products are removed, and then packaged and stored as required.

Precautions:

  Pay attention to the quality of yam, so as not to affect the quality of yam drying.
  The dried yam should be cooled for a while and then packaged to prevent the yam from returning to moisture again.
  If you need to dry a lot of yam, Baixin Machinery’s drying equipment is a good choice. Baixin Machinery is a manufacturer specializing in the production of dryers. It has 20 years of rich experience. For yam drying, it has professional drying equipment and mature drying technology to ensure the perfect drying effect.

  Baixin Machinery’s most popular yam dryers are heat pump dryers and continuous mesh belt dryers.I would be happy to introduce these two dryers in detail for you:

1:The first method:yam heat pump dryer

Household Commercial All-in-one drying equipment without installation for any material
  Drying essence is take moisture away, but takes away the moisture temperature is not the most critical factor. The key for drying is depending on relative humidity within certain space, Baixin Company took advantage of the dry essence, originality developed a "Closed Cycle" dryer, changed the traditional heat pump dryer "bake" to "dehumidifier”. Its several advantages were unmatched by the traditional heat pump dryer.
  Baixin Food Dehydrator has a compact structure, great energy-saving, wide application, high drying quality, easy operation, simple installation and removable. it is the best drying equipment for small firms, drying experiment and scientific research. The users only connect the power to use, is the easiest operation heat pump dryer.

2:The second method: yam continuous mesh belt drying machine

Large amount of dehydration 200-5000kg/h yam drying machine continuous automatic work easy operation
  Yam dryer machine is a kind of continuous production drying equipment, the main heating way has electric heating, steam heating, hot air heating. Its main working principle is to spread the material evenly in the network. The material is moved in the dryer by the operation of the machine, and the hot air draws out the water vapor of the material. so as to achieve the purpose of drying.
  The operation temperature is 40-120 degree centigrade. And the dry cycle is 1-5 hours.

Yam drying video：