Rose drying
 

There are many ways to dry roses, the most common ones are natural drying, natural shade drying, quick freeze drying and drying. Among them, natural drying and natural shade drying can achieve good results, which is both labor-saving and convenient. However, the above two methods cannot effectively kill the insect eggs attached to the rose flowers. After 2-3 months of storage, insects will be born from the dried roses. Therefore, the natural drying method is not suitable for the commercial production of dried roses. PHNIX super drying heat pump drying can well protect the effective ingredients in roses and is the best method for producing high-end dried roses.

Rose drying process Rose drying technology:

1. Rose drying process: keep warm at 35-40 degrees for 3 hours; heat up to 40-45 degrees for 5 hours, heat up to 45-50 degrees for 10 hours, a total of 19 hours.
2. Rose drying process: keep warm at 40-45 degrees for 3 hours; heat up to 40-45 degrees for 5 hours, heat up to 50-55 degrees for 8 hours, a total of 16 hours.
3. Rose drying process: keep warm at 45-50 degrees for 3 hours; heat up to 50-55 degrees for 5 hours, heat up to 55-60 degrees for 8 hours, a total of 16 hours.
Note: The blower is always on.

Chinese medicine believes that rose buds have the effects of regulating qi and relieving depression, promoting blood circulation and dispersing stasis, regulating menstruation and relieving pain, and softening cardiovascular and cerebrovascular vessels; it tastes sweet and slightly bitter, and is warm in nature. It can warm the heart, liver and blood vessels of the human body, relieve the depression in the body, and play a calming, soothing and anti-depressant role. The widely used rose buds are generally dried and stored for later use.  

Drying technology of rose buds:

1. Picking of buds: The best time to pick is when the calyx tip is slightly open, the bud tip is red, and the buds are about to bloom. The picking standard is that the buds have fully expanded but not opened. After picking, the buds are placed in bamboo cages or baskets and immediately sent to the local purchasing point for sale or processing; when the picking site is far away from the processing site, a temporary shade shed should be set up for drying, and stacking should not be done to prevent heat.

2. The purchase method and standard of fresh buds: In the season of centralized purchase of fresh buds, the processing unit purchases according to the designated farmers. The standard is fresh buds picked within 12 hours, bright color, uniform flower size, less than 5% weak buds; complete bud support, no flower stalks, no impurities, no insect damage, no artificial watering, no watering; no odor, pure fragrance; no half-opened buds, no open flowers.

3. Selection of fresh flower buds: Purchased fresh flower buds are stored by category, and mixed storage is prohibited. Careful selection is carried out to ensure that there are no impurities, half-opened buds, fully open flowers, and weak buds.

4. Grating and loading fresh flower buds: The selected fresh flower buds are evenly placed in a wooden frame drying grate with a wire mesh bottom, with the petals facing downward or upward, with uniform thickness, and without squeezing; the drying grate filled with flower buds should be loaded with care, and the flower buds should not be deformed or worn.

5. Shrinkage and drying of fresh flower buds: The drying cart filled with flower buds should be gently pushed into the drying room, the drying room door should be closed to increase the temperature, the indoor temperature should be strictly controlled, the slow fire baking should be changed in sequence, and the wind direction should be changed regularly to ensure that the flower buds are evenly dried and wet, and the color is bright.

6. Dried flower buds are out of the oven: The drying cart enters the drying room for about 8 hours, and the dried flower buds are manually inspected. As long as the color is bright, with the unique fragrance of roses, the buds are plump and spindle-shaped, the color is purple or purple, the receptacle and calyx are yellow-green, the flower buds are powdery flakes when twisted by hand, and 70-80% of the receptacle is crushed by hand and becomes vermicelli, it means that they are completely dry. At this time, the drying cart full of dried flower buds can be pushed out of the drying room.

7. Grading and packaging of dried flower buds: After grading, the dried flower buds are dried to room temperature, gently packed into non-toxic plastic bags, sealed, packed into standard cartons, and stored in a warehouse that meets hygiene standards, and the warehouse is kept dry and ventilated. The packaging box should be 20 cm from the ground and 20 cm from the wall.

Advantages of rose drying heat pump:

1. Easy installation: easy installation and removal, small footprint, can be installed indoors or outdoors.

2. High efficiency and energy saving: only a small amount of electricity is needed to absorb a large amount of heat in the air; compared with coal, oil and gas, it can save about 75% of operating costs; 1 kWh is equal to 4 kWh.

3. Environmental protection and pollution-free: there is no combustion and emission, it is an environmentally friendly product with sustainable development.

4. Safe and reliable operation: the operation of the entire system does not have the dangers of flammability, explosion, poisoning, short circuit, etc. that may exist in traditional dryers (fuel, gas or electric heating). It is an absolutely safe and reliable semi-closed drying system.

5. Long service life and low maintenance cost: it is developed on the basis of the technology of traditional air conditioners, with stable and reliable energy-saving and environmental protection performance and long service life; safe and reliable operation, fully automatic manual operation, and intelligent control.

6. Comfortable and convenient, with high degree of automation and intelligence: using self-controlled constant temperature device, plus energy storage system engineering, 24-hour continuous drying operation.