Method for drying honeysuckles

A drying method, the technology of honeysuckle, applied in the direction of drying solid materials, heating to dry solid materials, method combination to dry solid materials, etc., can solve the problem of the decrease of chlorogenic acid and luteolin content, low drying capacity, browning of honeysuckle, etc. problems, to achieve the effect of shortening the drying time, reducing the degree of browning, and reducing browning

Inactive Publication Date: 2014-05-28
HENAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, honeysuckle is prone to severe browning when hot air is dried, and the content of its main functional components, chlorogenic acid and luteolin, are significantly reduced.
While advanced technologies such as

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Step 1: Screen the picked fresh honeysuckle with a stainless steel sieve (3 mesh), and remove leaves and bloomed honeysuckle. The honeysuckle flower buds with moderate maturity, no mechanical damage, no insects, and light green color after manual selection and screening are used as raw materials. Clean latex gloves should be worn during the picking process, the skin should not come into direct contact with the honeysuckle, and it is not advisable to turn the honeysuckle too much;

[0019] The honeysuckle used is picked before 10:00 am on a sunny day and processed in time. Generally, the time between picking and drying does not exceed 4 hours.

[0020] Step 2, put the selected honeysuckle into the color protection solution, keep the color for 10 minutes, drain the color protection solution after the color protection is completed; the color protection solution is composed of distilled water, citric acid, ascorbic acid and sodium bisulfite, wherein each 1000mL The color p...

Embodiment 2

[0027] Step 1: Use a stainless steel sieve (7 mesh) to screen the picked fresh honeysuckle to remove leaves and bloomed honeysuckle. The honeysuckle flower buds with moderate maturity, no mechanical damage, no insects, and light green color after manual selection and screening are used as raw materials. Clean latex gloves should be worn during the picking process, the skin should not come into direct contact with the honeysuckle, and it is not advisable to turn the honeysuckle too much;

[0028] The honeysuckle used is picked before 10:00 am on a sunny day and processed in time. Generally, the time between picking and drying does not exceed 4 hours.

[0029] Step 2, put the selected honeysuckle into the color protection solution, keep the color for 20 minutes, drain the color protection solution after the color protection is completed; the color protection solution is composed of distilled water, citric acid, ascorbic acid and sodium bisulfite, wherein each 1000mL The color p...

Embodiment 3

[0036] Step 1: Use a stainless steel sieve (5 mesh) to screen the picked fresh honeysuckle to remove leaves and bloomed honeysuckle. The honeysuckle flower buds with moderate maturity, no mechanical damage, no insects, and light green color after manual selection and screening are used as raw materials. Clean latex gloves should be worn during the picking process, the skin should not come into direct contact with the honeysuckle, and it is not advisable to turn the honeysuckle too much;

[0037] The honeysuckle used is picked before 10:00 am on a sunny day and processed in time. Generally, the time between picking and drying does not exceed 4 hours.

[0038] Step 2, put the selected honeysuckle into the color protection solution, keep the color for 15 minutes, drain the color protection solution after the color protection is completed; the color protection solution is composed of distilled water, citric acid, ascorbic acid and sodium bisulfite, wherein each 1000mL The color p...

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Abstract

The invention discloses a method for drying honeysuckles. The method includes placing screened fresh honeysuckles into color-protecting solution; laying the honeysuckles on stainless steel screen cloth after the color-protecting solution on the honeysuckles is drained, and placing the stainless steel screen cloth in a drying chamber of a heat pump drying machine; setting the temperature of the drying chamber at 40-60 DEG C, setting an air speed of the drying chamber at 1-2.5m/s and setting the concentration of oxygen in the drying chamber at 5-21%; filling the drying chamber with nitrogen for 3-5 minutes at intervals of 20-30 minutes in drying procedures, keeping the required concentration of the oxygen in the drying chamber unchanged, and drying the honeysuckles for 6-10 hours to obtain the honeysuckles which are dried by the aid of heat pumps; placing the screen cloth with the honeysuckles into a microwave generator after the honeysuckles are dried by the aid of the heat pumps, and drying the honeysuckles by the aid of microwaves until the moisture contents of the honeysuckles are lower than or equal to 12%; spreading the honeysuckles in cool, clean and ventilation positions to temper the honeysuckles; loading the honeysuckles in compound zip-lock bags, and filling the insides of the bags with nitrogen so that the concentration of oxygen in each bag is lower than or equal to 5%. The drying chamber of the heat pump drying machine is preheated for at least 30 minutes before the stainless steel screen cloth is placed in the drying chamber. The method has the advantages that a manufacturing process is simple, the cost is low, and the quality of products are stable; a brightness value L of the honeysuckles manufactured by the method is larger than 60, the total phenol content of the honeysuckles is higher than 0.5%, a chlorogenic acid loss rate is lower than 20%, and the method has obvious merits, an important application prospect and high popularization utilization value.

Description

technical field [0001] The invention belongs to the field of new technologies for drying agricultural products, and in particular relates to a method for drying honeysuckle. Background technique [0002] Honeysuckle is the flower bud of Lonicera Lonicerae, which has the functions of clearing away heat and detoxification, dredging the throat, relieving heat and annoyance, and inhibiting bacteria. It is a green natural product with "medicine and food from the same source". The water content of fresh honeysuckle is about 80%, the color is light green, the smell is fragrant, and the medicinal value is the highest, but it is not conducive to transportation and storage, and must be dried in time. Good drying will give honeysuckle a light yellow-green color and a plump appearance, while improper drying will often cause deterioration of appearance color and loss of medicinal quality. [0003] At present, before drying, honeysuckle usually needs to be treated with high-temperature s...

Claims

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Application Information

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IPC IPC(8): F26B7/00F26B3/06F26B3/347A61K36/355
Inventor 罗磊杨彬朱文学刘云宏康新艳屈政孙军杰张玉先
Owner HENAN UNIV OF SCI & TECH
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