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

Method for preventing walnut green seedcases from browning

A technology for walnut green skin and browning, which is applied in the fields of food preservation, fruit and vegetable preservation, food science, etc., can solve problems such as unreported, and achieve the effects of no secondary pollution, preventing browning and blackening, and avoiding secondary pollution.

Inactive Publication Date: 2014-05-14
QILU UNIV OF TECH
View PDF3 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, domestic and foreign research on green peel mainly focuses on the extraction of active substances, the development of pesticides and pigment products, etc., but there is no report on the prevention and treatment of walnut green peel pollution. In view of this, the present invention uses a safe food brown stain inhibitor to prevent Browning of green husks to reduce pollution of green husks and improve ecological civilization in walnut producing areas

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
  • Method for preventing walnut green seedcases from browning
  • Method for preventing walnut green seedcases from browning
  • Method for preventing walnut green seedcases from browning

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Weigh 0.2g, 0.4g, 0.6g, 0.8g of sodium bisulfite respectively, add it into 1L of water to make a 0.2-0.8g / L sodium bisulfite solution, spray it on the surface of fresh walnut green husk, and observe for 5 days. Samples were taken every day, crushed and filtered, and the clear liquid was taken to measure the degree of browning. The browning degree is measured by the scenery photometry method, and the absorbance is measured at a wavelength of 510nm, and the browning degree of the green skin is measured by the absorbance value. The green bark that was not sprayed with sodium bisulfite solution was used as a control. The sodium bisulfite solution effectively inhibited the browning of walnut green skin, and the browning degree of each treatment was 14.01-26.65% of that of the control. The specific results are shown in the table below.

[0013]

Embodiment 2

[0015] Weigh 0.2g, 0.4g, 0.6g, 0.8g of L-cysteine ​​respectively, add it into 1L of water to make a 0.2-0.8g / L L-cysteine ​​solution, spray it on the surface of fresh walnut green husk, Observe for 5 days. Assay method is the same as in Example 1. The L-cysteine ​​solution effectively inhibited the browning of walnut green husks, and the browning degree of each treatment was 22.25-31.73% of that of the control. The specific results are shown in the table below.

[0016]

Embodiment 3

[0018] Weigh 0.6g, 1.2g, 1.8g, 2.4g of oxalic acid respectively, add it into 1L of water to make 0.6-2.4g / L oxalic acid solution, spray it on the surface of fresh walnut green husk, and observe for 5 days. Assay method is the same as in Example 1. The oxalic acid solution effectively inhibited the browning of walnut green husks, and the browning degree of each treatment was 12.36-22.80% of that of the control. The specific results are shown in the table below.

[0019]

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 relates to the walnut processing field, and in particular relates to a method for preventing walnut green seedcases from browning. The method for preventing walnut green seedcases from browning takes fresh walnut green seedcases as raw materials, and is characterized in that one of sodium hydrogen sulfite, L-cysteine, oxalic acid and erythorbic acid is used to be mixed in water, and the mixture is sprayed or dipped on the surface of the walnut green seedcases. The method is convenient and safe, has high efficiency and simplicity for operation, can greatly alleviate pollution to rivers and soils due to browning of the walnut green seedcases, has no secondary pollution, provides safety guarantee for processing in a walnut production zone and agricultural production and improves the ecological civilization of the walnut production zone.

Description

(1) Technical field [0001] The invention relates to the field of walnut processing, in particular to a method for preventing walnut green skin from browning. (2) Background technology [0002] Walnut green skin is a thick green exocarp on the outside of walnuts. After walnuts are harvested, the green skin is generally discarded as waste and enters the soil and rivers. Walnut green husk is rich in phenolic substances, which is very easy to oxidative browning. Its oxidative browning products have strong coloring power and are extremely difficult to remove on clothes or arms. In particular, browning products have a strong protein denaturation ability, which will cause slow growth or even death of crop seedlings, as well as the death of fish and shrimp in water bodies. There will also be certain health risks after the human body eats. According to this principle, a variety of biological pesticides have been developed, such as acaricides, insecticides, chestnut spider mite ...

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): A23B7/154A23B7/157
Inventor 傅茂润
Owner QILU UNIV OF TECH