Unlock instant, AI-driven research and patent intelligence for your innovation.

Preparation method of washing-free red dates with enhanced flavor and nutrition

A technology of no-wash jujube and jujube, which is applied in the direction of protecting fruits/vegetables with a coating protective layer, which can solve the problems of easy breakage, lack of selectivity and adjustability of membrane permeability, insufficient membrane strength, etc., and achieve smooth surface , mellow and elegant taste, good aroma and taste effect

Inactive Publication Date: 2014-04-16
SHANXI TIANJIAO BIOLOGICAL GROUP +4
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, studies have shown that there are still some key problems in the fresh-keeping of a single chitosan coating film. On the one hand, the permeability of the film lacks selectivity and adjustability; Part of the surface of the product is exposed, and it will still be affected by the external climate and microorganisms. This is caused by the structure and properties of chitosan itself. Therefore, the industry can adopt a method of combining with other materials-such as with other natural Chinese herbal medicine extracts Compounding—to improve the strength and toughness of chitosan film and improve the fresh-keeping effect

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] A method for preparing flavor-enhancing nutrition and washing-free jujube, comprising the following steps:

[0049] a. Pretreatment of jujube: the jujube is subjected to winnowing to remove impurities, inspection and classification, cleaning and low-temperature hot-air drying in sequence. The conditions for low-temperature hot-air drying are temperature 42°C, wind speed 0.18m / s, and drying time 5 hours. The water content of jujube is 38%;

[0050] b. Preparation of coating solution: Mix licorice galanga extract with pure water at a volume ratio of 1:10 to obtain a solution as solvent A, then use solvent A as base liquid to prepare 4.0% glacial acetic acid solution as solvent B, and use solvent A as solvent B. B is the chitosan solution that the base liquid preparation concentration is 1.1%, obtains coating liquid;

[0051] c. Preparation of dried dates: put the red dates pretreated in step a into the coating solution prepared in step b and soak for 8 minutes, and then ...

Embodiment 2

[0053] A method for preparing flavor-enhancing nutrition and washing-free jujube, comprising the following steps:

[0054] a. Pretreatment of jujube: the jujube is subjected to winnowing to remove impurities, inspection and classification, cleaning and low-temperature hot air drying in sequence. The conditions for low-temperature hot air drying are temperature 50°C, wind speed 0.25m / s, and drying time 3h. The water content of jujube is 37.5%;

[0055] b. Preparation of coating solution: Mix licorice galanga extract with pure water at a volume ratio of 1:10 to obtain a solution as solvent A, then use solvent A as base liquid to prepare 2.4% glacial acetic acid solution as solvent B, and use solvent A as solvent B. B is a chitosan solution with a concentration of 0.75% for base liquid preparation to obtain a coating liquid;

[0056] c. Preparation of dried dates: put the red dates pretreated in step a into the coating solution prepared in step c and soak for 7 minutes, take the...

Embodiment 3

[0058] A method for preparing flavor-enhancing nutrition and washing-free jujube, comprising the following steps:

[0059] a. Pretreatment of jujube: the jujube is subjected to winnowing to remove impurities, inspection and classification, cleaning and low-temperature hot-air drying in sequence. The conditions for low-temperature hot-air drying are temperature of 45°C, wind speed of 0.15m / s, and drying time of 4h. The water content of jujube is 37.2%;

[0060] b. Preparation of coating solution: Mix licorice galanga extract with pure water at a volume ratio of 1:10 to obtain a solution as solvent A, then use solvent A as base liquid to prepare 1.0% glacial acetic acid solution as solvent B, and use solvent A as solvent B. B is the chitosan solution that preparation concentration is 0.8% for base liquid, obtains coating liquid;

[0061] c. Preparation of dried dates: put the red dates pretreated in step a into the coating solution prepared in step c and soak for 7 minutes, tak...

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 provides a preparation method of washing-free red dates with enhanced flavor and nutrition, which belongs to the technical field of date fruit production, and aims to provide washing-free red dates with high water content, a high nutritive value, good flavor and edible safety. According to the technical scheme, the preparation method of the washing-free red dates with enhanced flavor and nutrition comprises the following steps of: pre-treating red dates, namely sequentially carrying out winnowing for impurity removing, picking for grading, washing and low-temperature hot air drying on the harvested ripened red dates; preparing a film coating solution, namely preparing a 1.0%-5.0% glacial acetic acid solution by taking a liquorice galangal extracting solution as a solvent, and preparing chitosan liquid with the concentration of 0.2%-1.0% by taking the prepared 1.0%-5.0% glacial acetic acid solution as a solvent, wherein the chitosan liquid is taken as a film coating solution; and preparing dry dates, namely soaking the pre-treated dry red dates into the film coating solution, and then carrying out low-temperature hot air drying on the red dates taken out of the solution to obtain the washing-free red dates.

Description

technical field [0001] The invention relates to a method for preparing non-washing jujube with enhanced flavor and nutrition, and belongs to the technical field of jujube fruit production. Background technique [0002] Jujube integrates nutrition, health care and medicinal functions, and contains a variety of functional ingredients. It is a natural fruit with the same origin of medicine and food, so it is also known as the "King of Tonic" and "Natural Health Food". It has been a nourishing food that people like since ancient times. Drying is one of the main ways of jujube processing. In my country, dried jujube products account for more than 50% of the total amount of jujube products. With the improvement of living standards, green, natural, nutritious, and safe have become new consumption trends, and the problems in the drying process of jujubes have become increasingly prominent: first, after the jujubes are dried, pectin, total acid, reducing sugar and The total sugar c...

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 Patents(China)
IPC IPC(8): A23B7/16
Inventor 康振奎张佩舜王晓艳冯俊敏巩晋龙陈宵利赵长兰
Owner SHANXI TIANJIAO BIOLOGICAL GROUP