Method for drying astragalus mongholicus medicinal slices through vacuum heat pump

A technology of vacuum heat and astragalus, applied in the direction of drying solid materials without heating, drying solid materials, drying, etc., can solve the problems of high drying energy consumption, low dehydration efficiency, high oil content, etc., to reduce energy consumption and drying time Effect of shortening and reducing operating energy consumption

Inactive Publication Date: 2018-04-24
张善辉
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the above technical problems, the present invention provides a method for vacuum heat pump drying of astragalus decoction pieces, which solves the problems of high oil content of raw astragalus oil bath products, low quality of traditional hot air drying products, high energy consumption and low dehydration efficiency of vacuum freeze-drying; Compared with other dried raw astragalus, the retention rate of raw astragalus prepared by the present invention is significantly improved

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  • Method for drying astragalus mongholicus medicinal slices through vacuum heat pump
  • Method for drying astragalus mongholicus medicinal slices through vacuum heat pump
  • Method for drying astragalus mongholicus medicinal slices through vacuum heat pump

Examples

Experimental program
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Effect test

Embodiment 1

[0044] (1) Selection, washing and slicing:

[0045] 1a) Select raw Astragalus membranaceus with a diameter of 25-60 mm, remove corrupted, damaged, deformed and diseased raw Astragalus membranaceus, and clean them;

[0046] 1b) Using a mechanical method to slice the raw Astragalus membranaceus after step 1a) after cleaning, with a slice thickness of 6 mm;

[0047] (2) Drying with solar energy combined with vacuum heat pump: The conditions for drying the astragalus decoction pieces with solar energy combined with vacuum heat pump are: vacuum pressure 3kPa, drying temperature 70°C.

[0048] During the period, the auxiliary instantaneous pulsed strong magnetic field cooperates with the pulsating controllable instantaneous pressure difference treatment: Among them, during the pulsation controllable instantaneous pressure difference treatment process, the pressure of the treatment chamber is increased to 0.5MPa, the temperature reaches 150°C, the stagnation time is 20s, and the pres...

Embodiment 2

[0068] The production method of Astragalus decoction pieces is basically the same as the method described in Example 1, except that:

[0069] The slice thickness of Radix Astragali decoction pieces in step (1) is 7mm;

[0070] Step (2) During the drying process of solar combined vacuum heat pump, the drying temperature is 45°C and the vacuum degree is 10kPa;

[0071] During the period, in step (2), the auxiliary instantaneous pulse strong magnetic field coordinated with the pulsating controllable instantaneous pressure difference processing parameters are: the instantaneous pressure difference processing temperature is 110°C, the pressure is 0.15MPa, the stagnation time is 2min, and the pressure chamber pressure is 10kPa after pressure release. During the period, the pressure difference flash operation was performed twice; during the pulsating and controllable instantaneous pressure difference treatment process, the intensity of the instantaneous pulsed strong magnetic field l...

Embodiment 3

[0083] The production method of Astragalus decoction pieces, as described in Example 1, the difference is:

[0084] The slice thickness of Radix Astragali decoction pieces in step (1) is 4mm;

[0085] Step (2) During the drying process of solar energy combined with vacuum heat pump, the drying temperature is 60°C, and the vacuum degree is 5kPa; the instantaneous pressure difference treatment described in step (2) is after the sample is placed in the processing chamber, and then dried with solar energy combined with vacuum heat pump for 2 minutes , carry out differential pressure flash evaporation, the steam temperature is 140°C, the pressure is 0.35MPa, and the treatment time is 40s; after that, the pressure is released to 5kPa, and the vacuum combined with solar energy is used for drying, with an interval of 2min, and the differential pressure flash evaporation operation is repeated 6 times; finally, the solar energy is used Combined with vacuum heat pump drying, the temperat...

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Abstract

The invention discloses a method for drying astragalus mongholicus medicinal slices through a vacuum heat pump. The method comprises the steps that the astragalus mongholicus medicinal slices are subjected to vacuum heat pump drying treatment and pulse instantaneous pressure-difference cycle treatment, in each cycle, the pressure of a treatment bin is increased firstly, the temperature of a material is instantaneously increased to be 110-150 DEG C, the temperature increasing time is stagnated for 25 s-3 min, the pressure of the treatment bin is instantaneously decreased to be 4-9 kPa, the number of the cycle times is 3-9, the time interval between every two adjacent cycles is 2-8 min, and finally, the astragalus mongholicus medicinal slices are treated till the water content is smaller than or equal to 8%. According to the method for drying the astragalus mongholicus medicinal slices through the vacuum heat pump, the problems that the water content of raw astragalus mongholicus is high, the quality of products dried by traditional hot air is low, and vacuum freezing drying is high in energy consumption and low in dehydration efficiency are solved.

Description

technical field [0001] The invention relates to the field of processing traditional Chinese medicinal materials, in particular to a method for drying astragalus decoction pieces by a vacuum heat pump. Background technique [0002] Raw Astragalus membranaceus is one of the common raw materials of traditional Chinese medicines, also known as Astragalus or Astragali. It is the root of the leguminous plant Astragalus mongolica or Astragalus membranaceus. It contains flavonoids and saponins, and flavonoids such as formononetin. In particular, raw astragalus is rich in astragalusinoids, which have attracted extensive attention because of its pro-VA activity, anti-cancer, prevention of cardiovascular diseases, and enhancement of immunity. The planting area and output of raw astragalus in my country rank first in the world. The processing of raw astragalus mainly includes raw astragalus juice, dehydrated raw astragalus, raw astragalus mud, raw astragalus powder, etc., and there is a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F26B5/04A61K36/481A61L2/08A61L2/03A61K125/00
CPCF26B5/04A61K36/481A61K2236/10A61K2236/17A61L2/0029A61L2/03A61L2202/21
Inventor 张善辉
Owner 张善辉
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