Method for evaluating safety of edible oil by using zebra fish

A technology for edible oil and zebrafish, which is applied in the direction of testing food, material inspection products, etc., can solve problems such as unknown physical and chemical properties, oil oxidation, and difficulty in detection, and achieve scientific and reasonable detection methods, high detection accuracy, and reduced detection costs. Effect

Inactive Publication Date: 2021-10-12
南京新环检测科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] (4) Heavy metal pollution
[0007] (5) The problem of benzopyrene, trans fatty acid and solvent in leaching crude oil brought about by processing exceeds the standard
[0009] (7) Oxidation and rancidity of oils and fats during oil storage, resulting in increased acid value and peroxide value
[0014] 1) Due to historical reasons, most of the detection indicators in the existing national standards are formulated with reference to foreign standards, but whether the toxicity of chemicals will show toxicity differences due to racial differences, there is currently no large sample data verification support, which means , there is uncertainty about whether a chemical that is harmless to Caucasians at standard doses is also harmless to Chinese people
[0015] 2) Unable to detect the synergistic toxicity of different chemical substances to the human body
Due to the unknown physical and chemical properties of different chemicals, there is uncertainty about whether they can produce synergistic effect or synergistic effect when interacting; it makes it more difficult to judge the synergistic toxicity of the sample to be tested than the toxicity of a single toxic substance
[0016] 3) Unknown additives cannot be detected, only known chemical substances can be detected
If there are analogues, derivatives of known chemical substances and their metabolites in the human body as unknown additives, it is difficult to detect
[0017] 4) There are many types of toxic substances, and considering cost factors such as time, manpower, and material resources, it is impossible to cover everything and achieve full inspection
[0020] After searching the literature, it is found that the safety evaluation of the zebrafish model is currently carried out, and the evaluation objects are all drugs and cosmetics, and there is no application in the field of edible oil.

Method used

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  • Method for evaluating safety of edible oil by using zebra fish
  • Method for evaluating safety of edible oil by using zebra fish
  • Method for evaluating safety of edible oil by using zebra fish

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] The investigation of embodiment 1 pretreatment method

[0054] This example compares the chemical extraction method, enzymatic hydrolysis method, and enzymolysis-chemical extraction method. It is found that the enzymatic hydrolysis method can degrade lipids into fatty acids, which has a great impact on the living environment of zebrafish, and introduces lipase and other protein substance. In addition, due to the extremely high lipid content in the edible oil, enzymatic hydrolysis is very difficult and the cost is very high. However, there is no significant difference in the extraction rate between the enzymatic hydrolysis-chemical extraction method and the chemical extraction method. In conclusion, choosing the chemical extraction method to pre-treat edible oil can not only reduce the cost, but also improve the time efficiency.

[0055] The comparison results of the three pretreatment methods are shown in Table 1:

[0056] Table 1 Comparison of three edible oil pretre...

Embodiment 2

[0059] The investigation of embodiment 2 extraction solvent

[0060] Compare the extraction rates of methanol, acetonitrile, DMSO, acetone and tetrahydrofuran, and their mixtures of 10%-100% to edible oils, use kitchen waste oils and self-made positive samples with known residues to analyze the extraction rate, positive addition The main substances are solvent residues, pollutants, antioxidants and heavy metal salts. The comparison results show that the extraction rate of acetonitrile: DMSO: water is 1.5: 1: 1 and the extraction rate is the best after three times of extraction. The extraction rate of various substances can reach 70%- 85%. The extract was dried, and the drying method was mainly drying at 55°C and nitrogen blowing at 55°C. After drying, the optimal constant volume solution is 70% methanol, and the considerations are the toxicity of the organic solvent to the zebrafish and the solubility of the organic solvent aqueous solution to the extract. The experimental r...

Embodiment 3

[0064] The investigation of washing solvent during embodiment 3 degreasing

[0065] The degreasing step will be applied to edible lipid samples. After evaluating various common degreasing organic solvents, including cyclohexane, n-hexane, ethyl acetate, etc., it is found that the ratio of cyclohexane to polar organic phase is 1:2 , The degreasing effect of repeated washing twice is the best.

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Abstract

The invention provides a method for evaluating the safety of edible oil by using zebra fish. The method comprises the following steps of constructing a zebra fish toxicity evaluation model, pre-treating the edible oil by extracting, degreasing and washing to obtain an extract of a detection product, treating via the zebra fish to obtain the toxicity evaluation data, and analyzing and evaluating the safety of the edible oil. The method provided by the invention is high in detection accuracy, scientific and reasonable in detection method and short in modeling period, so that the detection cost is greatly reduced, and practical feasibility is provided for popularizing and popularizing the detection method to the broad public, enterprises and governments.

Description

technical field [0001] The invention relates to the technical field of edible oil safety evaluation, in particular to a method for evaluating the safety of edible oil with zebrafish. Background technique [0002] Edible oil is the most common condiment used by residents, and it is also a medium for heating raw materials, which has the functions of seasoning and heat transfer. As one of the important nutrients needed by the human body, edible oil is an indispensable necessity in our daily life and plays an important role in the health of the human body. However, the current quality and safety problems have aroused the strong anger of consumers and the country's great attention. The quality and safety of edible oil mainly come from the various links of planting, harvesting, storage, processing and use of oil crops, specifically: [0003] (1) Aflatoxins (peanut oil, etc.), glucosinolates, oxazolidinethiones (rapeseed oil), gossypol (cottonseed oil), and benzopyrene (coconut...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/03
CPCG01N33/03
Inventor 金义超宋如顺李露露李春启
Owner 南京新环检测科技有限公司
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