Processing method of red dates

A processing method and technology for jujube, applied in the application, food preparation, food science and other directions, can solve the problems of insufficient conversion of jujube polysaccharide and insignificant contribution to the softening effect of jujube fruit, so as to improve taste and flavor, ensure natural flavor, Avoid sugar crusting effects

Inactive Publication Date: 2012-09-19
CHINA AGRI UNIV
View PDF2 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Soaking and rehydration softening method, due to the limitation of temperature and time, the conversion of jujube polysaccharides is not sufficient, and the contribution to the softening effect of jujube fruit after rehydration is not obvious

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
  • Processing method of red dates

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] A processing method for jujubes, the steps are as follows: ① select jujubes that are hang-dried on natural trees with a moisture content of 18-20% on a wet basis or basically hang-dried and then dried in the sun. ②Remove the foreign matter in the jujube, and then pick out the unqualified jujubes such as broken jujube, moldy jujube, pulp-head jujube, insect-eaten jujube, etc., and then use cleaning equipment to clean and wet the jujube. ③ Place the cleaned jujubes under certain temperature and humidity conditions, and perform polysaccharide conversion and softening treatment on the jujubes, wherein the treatment temperature is 35-65°C, the relative humidity is 40-50%, and the treatment time is 5 hours;

[0054] The softening process includes the following stages:

[0055] The first stage: treatment temperature 35~50℃, relative humidity 45~50%, treatment time 1.5h;

[0056] The second stage: treatment temperature 50~55℃, relative humidity 45~50%, treatment time 1.0h;

...

Embodiment 2

[0062] A processing method for jujubes, the steps are as follows: ① select jujubes that are hang-dried on natural trees with a moisture content of 18-20% on a wet basis or basically hang-dried and then dried in the sun. ②Remove the foreign matter in the jujube, and then pick out the unqualified jujubes such as broken jujube, moldy jujube, pulp-head jujube, insect-eaten jujube, etc., and then use cleaning equipment to clean and wet the jujube. ③ Place the cleaned jujubes under certain temperature and humidity conditions, and perform polysaccharide conversion and softening treatment on the jujubes, wherein the treatment temperature is 35-60°C, the relative humidity is 35-55%, and the treatment time is 4 hours;

[0063] The softening process includes the following stages:

[0064] The first stage: treatment temperature 35~50℃, relative humidity 50~55%, treatment time 2.0h;

[0065] The second stage: treatment temperature 50~55℃, relative humidity 45~50%, treatment time 1.0h;

...

Embodiment 3

[0070] A processing method for jujubes, the steps are as follows: ① select jujubes that are hang-dried on natural trees with a moisture content of 18-20% on a wet basis or basically hang-dried and then dried in the sun. ②Remove the foreign matter in the jujube, and then pick out the unqualified jujubes such as broken jujube, moldy jujube, pulp-head jujube, insect-eaten jujube, etc., and then use cleaning equipment to clean and wet the jujube. ③ Place the cleaned jujubes under certain temperature and humidity conditions, and perform polysaccharide conversion and softening treatment on the jujubes, wherein the treatment temperature is 30-60°C, the relative humidity is 35-55%, and the treatment time is 5 hours;

[0071] The softening process includes the following stages:

[0072] The first stage: treatment temperature 30~50℃, relative humidity 45~55%, treatment time 2.5h;

[0073] The second stage: treatment temperature 50~55℃, relative humidity 40~45%, treatment time 0.5h;

...

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

No PUM Login to view more

Abstract

The invention belongs to the technical field of dried fruit processing and relates to a processing method of red dates, wherein the red dates in the method are naturally dried or dried red dates with water contents of 18-23%, and the processing method comprises the following specific steps: (1) a cleaning step; (2) a polysaccharide converting, softening and processing step; (3) a cooling and conditioning step; and 4) a grading, sterilizing and packaging step, wherein the polysaccharide converting, softening and processing step is as follows: performing the softening treatment on the red datesunder a certain temperature and humidity environment, wherein the treating temperature is 20-70 DEG C, the relative processing humidity is 20-70%, and the treating time is 3.0-7.5 hours, and the stepis performed in stages. The processing method disclosed by the invention can be used for reducing the browning degree in the red date processing so as to maintain the original luster of the red dates; the polysaccharide converting, softening and processing procedure can be sued for reinforcing the polysaccharide conversion effect of the dry and hard red dates during the softening process, and thetypes and proportions of the carbohydrates in the red dates are changed so as to improve the product quality; and the non-soaking type rehydration softening technique is used for effectively preventing the nutrient loss and prolonging the storage periods of the red dates.

Description

technical field [0001] The invention belongs to the technical field of dried fruit processing, and in particular relates to a processing method of jujube. Background technique [0002] Jujube (Zizyphus jujube dates, also known as Chinese red dates) is the ripe fruit of Zizyphus Jujuba Mill, a plant of the genus Jujube in Rhamnaceae. Jujube is a unique fruit tree variety in my country, with a long history of cultivation, more than 4,000 years old. It has been listed as one of the "five fruits" (peach, plum, chestnut, apricot, jujube) since ancient times, and has high economic value. my country is the world's largest producer of red dates, and also the largest exporter of red dates and their processed products. More than 90% of the world's red dates are supplied by my country, with a high market share and a major position in the world's production and trade of red dates (Zhang Ying, Liu Fang, He Zhongwei, etc. Analysis and prospect of export trade of my country's jujube indus...

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
Patent Type & Authority Applications(China)
IPC IPC(8): A23L1/212A23L1/29A23L19/00A23L33/00
Inventor 高振江谢龙肖红伟林海白竣文
Owner CHINA AGRI UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap