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Non-destructive detection method for quickly detecting brown core of pear

A non-destructive testing and black heart disease technology, which is applied in measurement devices, color/spectral characteristic measurement, instruments, etc., to achieve the effect of simple and easy method, filling technical gaps, and reducing information loss

Inactive Publication Date: 2008-10-29
CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In our country, there are few researches on rapid and non-destructive detection of fruit internal quality, and this research is of great significance to the production, storage and export grading of fruits, especially pears.

Method used

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Embodiment Construction

[0028] CIELAB color system, also known as L * a * b * The color expression system is an international uniform color three-dimensional representation system established on the basis of colorimetry. L * Indicates lightness, a * Indicates the chromaticity from red to green, b *Representing the chromaticity from yellow to blue, the CIELAB color system is an accurate and objective way to define color. According to the phenomenon that the pear peel is turquoise or yellow-green in the early stage of black heart disease, the CIELAB color system can be used to measure the color of the pear fruit surface, and the internal browning of the pear and the color of the pear fruit surface, The relationship between the difference between sugar content and hardness, experiments show that the L * 、a * , b * ,E ab The indicators were significantly different, and the L in the middle of the fruit body * 、a * , b * ,E ab There was a very significant difference. According to this principl...

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Abstract

The invention discloses a rapid loss-free black-cored pear detecting method, which comprises the following steps: (1) selecting 3-5 detecting points of each detected pear randomly; measuring the surface colour value L*, a*,b* of each pear detecting point; calculating the Eab; (2) calculating the mean value of the obtained L*,a*,b* and Eab value through computer; (3) establishing the quality grade judgment equation set according to the L*,a*,b* and Eab value; calculating the highest mark equation to affirm the grade of detected pear.

Description

technical field [0001] The invention relates to a method for detecting the internal quality of fruits, in particular to a method utilizing L * a * b * Method for fast and nondestructive detection of black heart disease in Yali pear with colorimetric system. Background technique [0002] my country is the world's largest fruit producer, among which apples and pears are the most important varieties, but the annual export volume is very small. One of the important reasons restricting the export of fruits in my country is that the detection ability of domestic sorting is weak, the speed is slow, the test environment is poor, and the sorting of fruits cannot meet the requirements of the international market. The detection of Yali black heart disease is an important index to determine the intrinsic quality of Yali products. Yali black heart disease is a common fruit physiological disease during storage. When the disease occurs, light brown lesions first form in the Yali fruit ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/27G01N21/84G06F19/00
Inventor 韩东海涂润林
Owner CHINA AGRI UNIV