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Method for detecting content of fatty aldehyde in plant-derived edible oil and application

A detection method, fatty aldehyde technology, applied in the direction of testing food, measuring devices, material inspection products, etc., can solve the problem of inability to meet the requirements of rapid and large-scale detection, low detection sensitivity and accuracy, and inability to achieve efficient and accurate detection, etc. problem, achieve the effect of saving manpower and solvent, short detection time and low detection limit

Pending Publication Date: 2020-08-21
淄博海关综合技术服务中心
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These methods have certain limitations, and the detection sensitivity and accuracy are not high, especially for the detection of trace fatty aldehydes, which cannot be efficiently and accurately detected. Considering that some plant-sourced edible waste oils and fats involve refining and purification process, the content of fatty aldehydes is already very low. Therefore, it is necessary to develop a high-sensitivity detection method to meet the needs of rapid identification of refined plant-sourced waste oils and fats.

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  • Method for detecting content of fatty aldehyde in plant-derived edible oil and application
  • Method for detecting content of fatty aldehyde in plant-derived edible oil and application
  • Method for detecting content of fatty aldehyde in plant-derived edible oil and application

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Embodiment 1

[0074] Embodiment 1 is the best embodiment of the present invention, and the present invention will be further described below in conjunction with embodiment.

Embodiment 1~4

[0076] A method for detecting fatty aldehyde content in vegetable source edible oil. Examples 1 to 4 respectively detect the content of fatty aldehydes in randomly selected olive oil, peanut oil, blended oil, and soybean oil sold on Jingdong.com.

[0077] 1) Preparation of 2,4-dinitrophenylhydrazine derivative solution:

[0078] Preparation of derivatization reagent: Weigh 0.089g of 2,4-dinitrophenylhydrazine and dissolve it in 200ml of acetonitrile to prepare a stock solution with a concentration of 0.01mg / L.

[0079] 2) Preparation of acid catalyst: Weigh 2.690g of p-toluenesulfonic acid, dissolve it in 100ml of acetonitrile to prepare an acid solution with a concentration of 0.20mol / L, and use it as a stock solution.

[0080] 3) Sample pretreatment: Shake the oil sample to be tested well, take 0.5000g of olive oil, peanut oil, blended oil, and soybean oil sample randomly selected on Jingdong.com into 15ml reagent tubes, add 1ml of acetonitrile and vortex for 1 minute Extr...

Embodiment 5

[0090] The other conditions of this example are the same as in Example 1. Take 2.0 g of a commercially available olive oil sample of a certain brand in a 15 ml reagent tube, add 10 ml of acetonitrile and vortex for 2 minutes for extraction.

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Abstract

The invention discloses a method for detecting the content of fatty aldehyde in plant-derived edible oil and application, and belongs to the technical field of edible oil detection. Vegetable oil cangenerate a series of chemical changes in a high-temperature frying process, new fatty aldehyde substances are generated, and the method for detecting the kitchen waste oil by means of fatty aldehyde detection mainly comprises a spectrophotometric method, a chromatography method (gas phase and liquid phase) and other detection methods. The methods have certain limitations, the detection sensitivityand accuracy are not high, particularly, trace fatty aldehyde detection cannot achieve efficient and accurate detection. By optimizing liquid chromatography and mass spectrometry detection conditions, the ultra-high performance liquid chromatography tandem quadrupole mass spectrometry technology is successfully applied to detection of aldehydes in grease, and is further applied to detection of kitchen waste oil in grease, so that the detection limit is lower, and the detection method is more sensitive, more efficient and more accurate.

Description

technical field [0001] The invention discloses a detection method and application of fatty aldehyde content in vegetable source edible oil, belonging to the technical field of edible oil detection. Background technique [0002] Vegetable edible oil is an important source of oil in people's daily life, especially with a series of counterfeit waste oil entering the consumer market, the identification and inspection of vegetable edible oil has attracted extensive attention from quality supervision departments and scientific research institutions in various countries. Vegetable oil undergoes a series of chemical changes during high-temperature frying to produce new aliphatic aldehydes. Therefore, aliphatic aldehydes can be used as identification indicators for vegetable-derived waste oils. [0003] The detection methods of aliphatic aldehydes mainly include spectrophotometry, chromatography (gas phase, liquid phase) and other detection methods. These methods have certain limita...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/02G01N30/06G01N30/72G01N33/03
CPCG01N30/02G01N30/06G01N30/72G01N33/03G01N2030/062
Inventor 刘胜许健王利涛刘永强孙计赞张引
Owner 淄博海关综合技术服务中心