Texture quality non-destructive testing method in sea cucumber heating process

A heating process, non-destructive testing technology, applied in the direction of using nuclear magnetic resonance for analysis, etc., can solve the problems of low-field nuclear magnetic resonance technology heating temperature and heating time without specific application, and achieve high degree of automation of processing technology, stable detection value, The effect of good sea cucumber shape

Active Publication Date: 2016-03-02
DALIAN POLYTECHNIC UNIVERSITY
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, at present, there is no specific application of low-field NMR technology ...

Method used

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  • Texture quality non-destructive testing method in sea cucumber heating process
  • Texture quality non-destructive testing method in sea cucumber heating process
  • Texture quality non-destructive testing method in sea cucumber heating process

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Experimental program
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Effect test

Embodiment 1

[0038] Establishment of low-field NMR transverse relaxation spectrum database of sea cucumber during low-temperature heating:

[0039] Remove the spout, viscera and tendons of fresh and live sea cucumbers, and clean them up, and then heat the sea cucumbers for different lengths of time under low-temperature heating conditions of 20 to 70°C (the time points selected for recording in this embodiment are 15min, 30min, 60min, 90min and In actual application, the time interval can be shortened according to the needs, and the transverse relaxation map data of more time points can be measured to improve the accuracy of the estimated value in the later stage); For resonance detection, the detection parameters are set to: 90-degree pulse width P 1 :13μs, 180 degree pulse width P 2 : 26μs, re-sampling waiting time T w :1000~4000ms, analog gain RG 1 :10~20, digital gain DRG 1 :1~5, preamp gain PRG:1, NS:8, NECH:1000~5000, receiver bandwidth SW: 200KHz, control parameter RFD of start ...

Embodiment 2

[0047] Take the fresh sea cucumber to be tested, remove the spit, viscera and tendons, and clean it. After heating at a constant temperature in a water bath at 45°C for 15 minutes, the sea cucumber samples were tested using a low-field nuclear magnetic equipment (NMI20-030H-I, Shanghai Numei Electronics Technology, NMI20-030H-I), and the parameters were set as: 90-degree pulse width P 1 :13μs, 180 degree pulse width P 2 : 26μs, re-sampling waiting time T w :2000ms, analog gain RG 1 :15, digital gain DRG 1 : 3, preamplifier gain PRG: 1, NS: 8, NECH: 3000, receiver bandwidth SW: 200KHz, control parameter RFD of start sampling time: 0.002ms, delay DL 1 : 0.5ms. Then a one-dimensional inverse Laplace algorithm is used as the transverse relaxation time T 2 Inversion algorithm (number of iterations: between 100,000 and 10 million times, preferably 1,000,000 times) to obtain the transverse relaxation characteristic map of each sample (such as Figure 4 , Table 7). The obtained...

Embodiment 3

[0052] Take the fresh sea cucumber to be tested, remove the spit, viscera and tendons, and clean it. After heating at a constant temperature in a water bath at 90°C for 15 minutes, the sea cucumber samples were tested using low-field nuclear magnetic equipment (NMI20-030H-I, Shanghai Numei Electronics Technology, NMI20-030H-I), and the parameters were set as: 90° pulse width P 1 :13μs, 180 degree pulse width P 2 : 26μs, re-sampling waiting time T w :2000ms, analog gain RG 1 :15, digital gain DRG 1 : 3, preamplifier gain PRG: 1, NS: 8, NECH: 3000, receiver bandwidth SW: 200KHz, control parameter RFD of start sampling time: 0.002ms, delay DL 1 : 0.5ms. Then a one-dimensional inverse Laplace algorithm is used as the transverse relaxation time T 2 Inversion algorithm (number of iterations: between 100,000 and 10 million times, preferably 1,000,000 times) to obtain the transverse relaxation characteristic map of each sample (such as Figure 5 , Table 9). The obtained sample ...

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Abstract

The invention relates to a texture quality non-destructive testing method in a sea cucumber heating process. The texture quality non-destructive testing method includes the steps: A) establishing a low field nuclear magnetic resonance transverse relaxation spectrum information database in the sea cucumber heating process; B) establishing a texture information database in the sea cucumber heating process; C) analyzing correlation information between the low field nuclear magnetic resonance transverse relaxation spectrum information obtained in the step A) and the texture information obtained in the step B); D) carrying out low field nuclear magnetic resonance testing on to-be-detected sea cucumber, to obtain transverse relaxation spectrum information; and E) comparing the transverse relaxation spectrum information obtained in the step D) with the low field nuclear magnetic resonance relaxation spectrum database information in the sea cucumber heating process established in the step A), selecting similar low field nuclear magnetic resonance relaxation spectrum database information as a reference value, according to the correlation information, which is obtained in the step C), between the low field nuclear magnetic resonance transverse relaxation spectrum information and the texture information, referring to the information of the texture information database established in the step B), and speculating to obtain a texture characteristic speculation value of the sample sea cucumber.

Description

technical field [0001] The invention relates to the field of food detection, in particular to a method for non-destructive detection of texture quality in sea cucumber heating process. Background technique [0002] Sea cucumber has extremely high nutritional value. As one of the "eight treasures of the sea", it has always been regarded as a delicacy in Chinese food. Since the Qing Dynasty, sea cucumber has been officially classified as a herbal medicine and listed as a tonic. Modern scientists have found through research that sea cucumbers not only have significant effects in anti-tumor and anti-coagulation, but also have analgesic and antispasmodic effects, anti-fatigue, prevention and treatment of arteriosclerosis and strengthening the body's immunity. In recent years, the sea cucumber industry has developed rapidly. In 2014, the output reached 200,000 tons, with an output value of more than 40 billion yuan. [0003] The heating step in the processing of sea cucumber is a...

Claims

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Application Information

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IPC IPC(8): G01N24/08
Inventor 谭明乾毕景然王瑞颖
Owner DALIAN POLYTECHNIC UNIVERSITY
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