Method for identifying sea cucumber drying modes and method for monitoring sea cucumber quality change during drying

A drying method, sea cucumber technology, applied in the direction of material analysis, instruments, measuring devices, etc. through resonance, can solve the problem of time-consuming

Active Publication Date: 2016-07-13
DALIAN POLYTECHNIC UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Both are destructive to the sample and take a long time

Method used

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  • Method for identifying sea cucumber drying modes and method for monitoring sea cucumber quality change during drying
  • Method for identifying sea cucumber drying modes and method for monitoring sea cucumber quality change during drying
  • Method for identifying sea cucumber drying modes and method for monitoring sea cucumber quality change during drying

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] Embodiment 1: Establish the identification method of the sea cucumber samples of different drying methods

[0070] Get 10 fresh sea cucumbers, the quality is 80-120g. Divide them into two groups, 5 in each group, one group is subjected to natural drying treatment, and the other group is subjected to hot air drying treatment as standard samples, and the sea cucumbers are treated until the water content of sea cucumbers is lower than 15%. Enter the MRI analyzer, and carry out data collection, analysis and identification according to the following steps.

[0071] 1) Acquisition of nuclear magnetic resonance proton signal:

[0072] The MiniMR-Rat magnetic resonance imaging analyzer was used to collect NMR proton and nuclear signals ( 1 H-NMR); instrument parameters are set as: 90-degree pulse width P1: 13μs, 180-degree pulse width P2: 26μs, repeated sampling waiting time Tw: 5000ms, analog gain RG1: 15, digital gain DRG1: 3, preamplifier gain PRG: 1, NS: 8, NECH: 8000, r...

Embodiment 2

[0079] Example 2: Verification of the identification method of sea cucumber samples in different drying methods

[0080] Get 10 fresh sea cucumbers, the quality is 80-120g. Divide them into two groups, 5 in each group, one group is subjected to natural drying treatment, marked as drying test samples, and the other group is subjected to hot air drying treatment, marked as drying test samples, and treated separately until the water content of sea cucumbers is lower than At 15%, the sample is sent to the nuclear magnetic resonance imaging analyzer in a complete state, and the data collection, analysis and identification are carried out according to the steps described in the above-mentioned embodiment 1.

[0081] Such as figure 2 As shown, the test results of two types of test samples——sun-dried test samples and dried test samples T 2 Value falls respectively in the scope determined by standard sample in embodiment 1, further carries out principal component analysis ( image ...

Embodiment 3

[0083] Example 3: Using Magnetic Resonance Relaxation Spectroscopy Imaging to Determine the Optimal Drying Time of Sea Cucumbers

[0084] Select a sea cucumber sample boiled in boiling water, with a mass of 10.00-15.00g. The sample is dried with hot air, and when the sample is dried to 0h, 2h, 4h, 6h, 8h, 10h, and 12h, the sample is sent to the MRI analyzer in a complete state, and the data acquisition and imaging analysis are carried out as follows:

[0085] 1) Acquisition of nuclear magnetic resonance proton signal:

[0086] The MiniMR-Rat magnetic resonance imaging analyzer was used to collect NMR proton and nuclear signals ( 1 H-NMR), the parameters are set as: slices: [4-10], FovRead: 100mm, FovPhase: 100mm, slicewidth: 2.0-3.0mm, slicegap: 0.5-1mm, Readsize: 256, Phasesize: 192, Average: 2, 4, 8, T 1 Weighted imaging: TR: 300-500ms, TE: 19-20ms; T 2 Weighted imaging: TR: 1600-2000ms, TE: 60-80ms;

[0087] 2') spectral analysis:

[0088] Transverse relaxation time T...

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Abstract

The invention provides a method for identifying sea cucumber drying modes and a method for monitoring sea cucumber quality change during drying by means of nuclear magnetic resonance.The methods are applicable to identifying of sea cucumbers prepared by different drying modes and real-time monitoring of the sea cucumber quality during drying.By the method for identifying the sea cucumber drying modes, through acquisition of nuclear magnetic resonance signals of sea cucumber samples subjected to hot air drying and natural airing treatment and different drying degrees of sea cucumber samples, transverse relaxation time spectrograms T2 and A2 and magnetic resonance imaging of the samples are obtained as main identifying and monitoring bases, so that aired sea cucumbers, dried sea cucumbers and different drying degrees of sea cucumbers are identified accurately and quickly.The methods are high in measurement result accuracy and short in consumed time, have no damage to the samples and can provide internal visualized information of the samples and provide reliable information for dried sea cucumber detection and sea cucumber quality change during drying.

Description

technical field [0001] The invention belongs to the field of sea cucumber quality analysis and identification, and in particular relates to a method for identifying sea cucumber drying modes and monitoring sea cucumber quality changes during the drying process by using a nuclear magnetic resonance method. Background technique [0002] Sea cucumber is a mollusc marine animal with high nutritional value. It contains 18 kinds of amino acids and various trace elements in its body, which can enhance tissue metabolism, enhance body cell vitality, adjust human body water balance, eliminate fatigue, and improve human immunity. , delay gonadal aging, prevent arteriosclerosis and anti-tumor effects, very suitable for all kinds of people. Because fresh sea cucumbers have strong autolytic enzymes, fresh sea cucumbers are not easy to store for a long time. As a commodity, they are usually processed into dry and salted forms. At present, 90% of fresh sea cucumbers in the world are proces...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N24/08
CPCG01N24/082
Inventor 谭明乾臧秀宋亮韩茹
Owner DALIAN POLYTECHNIC UNIVERSITY
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