Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

High-efficiency drying method for shepherd's purse

A shepherd's purse, drying technology, applied in the direction of fruit and vegetable preservation, fruit/vegetable preservation through dehydration, food preservation, etc., to achieve the effect of improving rehydration, good tissue shape and nutrients, and increasing drying rate

Active Publication Date: 2015-07-15
江苏太湖地区农业科学研究所
View PDF5 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of this invention is to provide a kind of high-efficiency drying method of shepherd's purse, to solve the deficiencies of many existing drying methods

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • High-efficiency drying method for shepherd's purse

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Embodiment one: a kind of high-efficiency drying method of shepherd's purse, the steps are as follows:

[0033] Step 1. Preprocessing:

[0034] (1), cleaning: first remove the floating soil on the surface of the leaves with running water, and remove the yellowed, rotten, and moth-eaten leaves, then cut off the roots, and finally drain the free water on the surface of the shepherd's purse; Cut the shepherd's purse into 0.5-1cm long pieces;

[0035] (2) Pre-freezing: pre-freeze the sliced ​​shepherd's purse at -15~-20°C for no less than 6 hours, and set aside;

[0036] Step two, freeze drying:

[0037] Take out the pre-frozen shepherd's purse and place it in a freeze dryer, first set the temperature to -3~-7°C, and sublimate the shepherd's purse for 3~4 hours; then set the temperature to 3~7°C, Analyzing the shepherd's purse for 2 to 3 hours; combined with the sublimation and decomposing process, the water content of the shepherd's purse is 50% to 60%, and the chloroph...

Embodiment 2

[0053] Embodiment two: a kind of high-efficiency drying method of shepherd's purse, differs from embodiment one in that:

[0054] 1. When pre-freezing, shepherd's purse is pre-frozen at -20°C;

[0055] 2. During freeze-drying, the temperature for sublimation treatment is set to -5°C, the temperature for analysis treatment is set to 5°C, and the total drying time is 5 hours;

[0056] 3. During vacuum drying, the drying time in the first half stage is 50min, so that the water content of shepherd’s purse is reduced to 26.8%; the drying time in the second half stage is 45min, so that the water content of shepherd’s purse is reduced to 17.3%;

[0057] 4. When microwave drying, dry according to the power of 8W / g shepherd's purse, and the intermittent time is 20s.

[0058] Other parts are the same as those in Embodiment 1, and will not be repeated here.

Embodiment 3

[0059] Embodiment three: a kind of high-efficiency drying method of shepherd's purse, differs from embodiment one in that:

[0060] 1. When pre-freezing, shepherd's purse is pre-frozen at -20°C;

[0061] 2. During freeze-drying, the temperature during sublimation treatment is set at -3°C, the temperature during analysis treatment is set at 7°C, and the total drying time is 6 hours, so that the water content of shepherd's purse is reduced to 54.3%;

[0062] 3. During vacuum drying, the drying time in the first half stage is 46min, so that the water content of shepherd's purse is reduced to 25.1%; the drying time in the second half stage is 50min, so that the water content of shepherd's purse is reduced to 15.3%;

[0063] 4. When microwave drying, dry according to the power of 5W / g shepherd's purse, and the intermittent time is 15s.

[0064] Other parts are the same as those in Embodiment 1, and will not be repeated here.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Thicknessaaaaaaaaaa
Login to View More

Abstract

The invention provides a high-efficiency drying method for shepherd's purse. The method is characterized by comprising the following steps: 1, pretreatment: a step of cleaning, draining and segmenting the shepherd's purse and pre-freezing the shepherd's purse at a temperature of -15 to -20 DEG C for no less than 6 h; 2, freeze drying: a step of freezing the prefrozen shepherd's purse, then sublimating the shepherd's purse at a temperature of -3 to -7 DEG C for 3 to 4 h and desorbing the shepherd's purse at a temperature of 3 to 7 DEG C for 2 to 3 h, wherein the processed shepherd's purse has water content of 50 to 60%; 3, vacuum drying: a step of drying the shepherd's purse at a vacuum degree of -0.065 to -0.075 MPa for 50 to 60 min when temperature uniformly rises to 50 DEG C from 30 DEG C so as to allow the water content of the shepherd's purse to drop to 25 to 30% and then drying the shepherd's purse at a vacuum degree of -0.08 to -0.09 MPa for 40 to 50 min when temperature uniformly rises to 70 DEG C from 50 DEG C so as to allow the water content of the shepherd's purse to drop to 15 to 20%; and 4. microwave drying: a step of drying the shepherd's purse at a power of 5 to 10 W / g, wherein overturning is carried out during drying, drying is stopped for 10 to 20 s every 0.8 to 1.2 min, the water content of the shepherd's purse drops to less than 8%, and drying is completed. The method provided by the invention maintains the structural form and nutritional components of the shepherd's purse, enables the dried shepherd's purse to have a good color, a good water regaining characteristic and richer flavor, shortens drying time and improves drying efficiency.

Description

technical field [0001] The invention relates to a high-efficiency drying method of shepherd's purse. The drying method specifically relates to combined drying of shepherd's purse post-harvest pretreatment and freezing, vacuum and microwave. Background technique [0002] In recent years, with the improvement of people's consumption level and the change of dietary concepts, wild vegetables are increasingly moving from the mountains to the dining table, which plays a very important role in enriching the people's vegetable basket. At the same time, many wild vegetables also have certain medicinal properties. Efficiency, more and more favored by consumers. [0003] Shepherd's purse - a cruciferous plant, is an edible wild vegetable suitable for all ages. Shepherd's purse grows prostrate on the ground, the color is gray-green, and the smell is sweet and fragrant. Because it is rich in glutamic acid and other amino acids necessary for human body, it tastes extremely delicious. It ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): A23B7/02A23B7/024
Inventor 刘腾飞张丽陆皓茜杨代凤
Owner 江苏太湖地区农业科学研究所
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com