How to Dry Lotus Seeds/Dehydrate Lotus Seeds in a Dehydrator

Jul 17, 2021

Introduction to lotus seeds：

Lotus seeds have the effects of replenishing the spleen, relieving diarrhea, nourishing the heart and calming the nerves, and are often used for spleen deficiency and insomnia. The lotus seeds are hard, with thin seed coats, not easy to peel, sweet, slightly astringent, and bitter in heart.

Lotus seeds processing steps：

Although the lotus seeds are small, there are many processes before processing, such as picking lotus, peeling the lotus, peeling the lotus seed, peeling, and removing the lotus core. The drying process can only be entered after all the processes are processed.
The peeled lotus seeds must be sorted, and usually the old and tender ones are separated, which is conducive to the peeling and peeling of the lotus seed peeler. The removed lotus core is green and green, like green tea, collected and dried, it is a good Chinese medicinal material that can be used to make tea.

Lotus seeds drying process：

After the previous steps, the lotus seeds to be removed are put into the sieve, and then put into the material truck. Each material truck should not exceed 14 sieves, and the sieve layer spacing should be controlled at about 10 cm to ensure that there is a reasonable gap in the drying room to facilitate the passage of hot air. When everything is ready, start the temperature and humidity control panel of the dryer and pay attention to the beginning The temperature should not be too high. If the temperature is too high and the humidity in the initial drying room is relatively high, it will cause simmering and affect the taste of lotus seeds.
Usually about 50℃ is appropriate. When baking, heat the air in the drying room for the first drying and turn the lotus seeds, but it is not advisable to touch the lotus seeds directly by hand, so as not to affect the whiteness. After about half an hour, when the lotus seed has water drops on the surface (commonly known as sweating), it should be lowered to 40℃-50℃ for stable drying, not subject to roasting yellow. When the lotus seeds are dried to a moisture content of ≤11%, stop drying and cool to room temperature for packaging. Usually, the drying time is about 6-8 hours to produce dried lotus seeds.

Recommendation of lotus seeds dryer/drying machine

Commercial 100-3000kg/h large amount of dehydration wide application and easy operation

Heat pump drying machine use the principle of inverse Carnot cycle. It absorbs low-temperature heat energy in the air, which becomes high-temperature heat energy after efficient heat collection and integration by the heat pump system, and is transported to the drying room for cyclic heating and drying of materials.It refers to exhausting the hot and humid air in the drying room directly to the outside of the drying room through dehumidification device, and then replenishing natural fresh air.

Hot air circle drying machine belongs to high temperature heat pump unit. Its working principle is: the working fluid of the heat pump is compressed by the compressor, becomes high temperature and high pressure gas, enters the condenser, condenses and liquefies the heat, and is used for air heating in the drying room. The moisture in the material is vaporized and evaporated by the form of hot air, and the evaporated water vapor is discharged by the moisture discharge system, thereby achieving the purpose of drying the drying material.