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A non-destructive testing method for texture quality of seawater in heating process

A technology of heating process and non-destructive testing, which is applied in the direction of nuclear magnetic resonance analysis, etc., can solve the problems of low-field nuclear magnetic resonance technology heating temperature and heating time that have not been used in specific applications, and achieve high degree of automation in processing technology, good sea cucumber shape, The effect of improving detection speed

Active Publication Date: 2017-09-29
DALIAN POLYTECHNIC UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, there is no specific application of low-field NMR technology in the selection of heating temperature and heating time during sea cucumber processing.

Method used

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  • A non-destructive testing method for texture quality of seawater in heating process
  • A non-destructive testing method for texture quality of seawater in heating process
  • A non-destructive testing method for texture quality of seawater in 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 method for non-destructive detection of sea cucumber's texture quality in the thermal process, comprising: A) establishing a database of low-field nuclear magnetic resonance transverse relaxation spectrum information in the thermal process of sea cucumber; B) establishing a texture information database of sea cucumber in the thermal process; C ) analyzing and obtaining the correlation information between the medium and low field NMR transverse relaxation spectrum information in step A) and the texture information in step B); D) performing low field nuclear magnetic resonance detection on the sea cucumber to be tested to obtain the transverse relaxation spectrum information; E ) Comparing the information of the transverse relaxation spectrum obtained in step D) with the database information of the low-field NMR relaxation spectrum in the sea-joining heating process established in step A), and selecting the similar low-field NMR relaxation spectrum database information as a reference According to the correlation information between the low-field nuclear magnetic resonance transverse relaxation spectrum information obtained in step C) and the texture information, referring to the texture information database information established in step B), the texture characteristics of the sample sea cucumber are inferred Inferred value.

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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Patent Type & Authority Patents(China)
IPC IPC(8): G01N24/08
Inventor 谭明乾毕景然王瑞颖
Owner DALIAN POLYTECHNIC UNIVERSITY
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