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Detection method capable of simultaneously detecting multiple illegal additives in wheat product

A detection method and additive technology, applied in chemical instruments and methods, measuring devices, other chemical processes, etc., can solve the problems of low detection efficiency, achieve the effects of improving accuracy, improving separation effect, and improving detection efficiency

Pending Publication Date: 2022-07-15
SICHUAN LIGHT INDUSTRY RESEARCH AND DESIGN INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] At present, the detection of benzohydroxamic acid, resorcinol, trisodium thiocyanate and kojic acid mainly includes high performance liquid chromatography, high performance liquid chromatography-tandem mass spectrometry, near-infrared spectroscopy and electrophysiology. Chemical method, but the inventor found in the detection process that the detection of each substance needs to be carried out separately with the corresponding detection method for sample detection, and the detection efficiency is low

Method used

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  • Detection method capable of simultaneously detecting multiple illegal additives in wheat product
  • Detection method capable of simultaneously detecting multiple illegal additives in wheat product
  • Detection method capable of simultaneously detecting multiple illegal additives in wheat product

Examples

Experimental program
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Effect test

Embodiment 1

[0041] A detection method that can detect multiple illegal additives in wheat products at the same time, including the following steps:

[0042] Step 1, pulverize the wheat sample, add methanol solution with a mass fraction of 40% for dissolving, vortex mixing, and then use ultrasonic vacuum extraction to process to obtain a wheat dissolving solution;

[0043] The ultrasonic vacuum extraction process includes the following steps:

[0044] Step 1, ultrasonic pre-cooling: adjust the temperature to -12°C, and ultrasonically treat for 5 min;

[0045] Step 2, the temperature is raised in stages, and the vacuum degree is set to 20Pa;

[0046] The staged heating includes: the first stage is heated to -10°C and held for 3min; the second stage is heated to -2°C and held for 10min; the third stage is heated to 10°C and held for 13min, and the third stage is heated to 20°C and kept 8min;

[0047] Step 2: Centrifuge the wheat dissolving solution at 8000 r / min for 8 min, filter the supern...

Embodiment 2

[0050] A detection method that can detect multiple illegal additives in wheat products at the same time, including the following steps:

[0051] Step 1, pulverize the wheat sample, add methanol solution with a mass fraction of 60% to dissolve, vortex and mix, and then use ultrasonic vacuum extraction process to process to prepare wheat dissolving solution;

[0052] The ultrasonic vacuum extraction process includes the following steps:

[0053] Step 1, ultrasonic pre-cooling: adjust the temperature to -12°C, and ultrasonically treat for 9 min;

[0054] Step 2, the temperature is increased in stages, and the vacuum degree is set to 10Pa;

[0055] The staged temperature rise includes: the first stage is heated to -2°C and held for 5min; the second stage is heated to 10°C and held for 10min; the third stage is heated to 20°C and held for 8min, the third stage is heated to 35°C and held for 4min ;

[0056] Step 2: Centrifuge the wheat dissolving solution at 9000 r / min for 4 min,...

Embodiment 3

[0059] The difference from Example 1 is that in step 1, a methanol solution with a mass fraction of 50% is used, and the rest are the same as in Example 1.

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Abstract

The invention relates to the field of food detection, and particularly discloses a detection method capable of simultaneously detecting various illegal additives in a wheat product, which comprises the following steps: step 1, crushing a sample, adding a methanol solution for dissolving, carrying out vortex mixing uniformly, and treating by adopting an ultrasonic vacuum extraction process to prepare a wheat dissolving solution; step 2, performing centrifugal treatment on the wheat dissolving solution, taking supernate, filtering, and performing sample injection detection; wherein a chromatographic column adopts a C18 silane bonded silica gel column, a mobile phase A is a sodium pentanesulfonate aqueous solution, and a mobile phase B is a mixture of acetonitrile and water-soluble alcohol. By adopting the detection method, the contents of kojic acid, benzohydroxamic acid, trithiocyanuric acid trisodium salt and resorcinol in the wheat sample can be detected at the same time through one-time sample introduction, the detection time is saved, and the detection efficiency is remarkably improved; meanwhile, the detection limit of each substance is reduced, and the accuracy of a detection result is improved.

Description

technical field [0001] The present application relates to the field of food detection, and more particularly, to a detection method that can simultaneously detect multiple illegal additives in wheat products. Background technique [0002] Wheat flour and wheat products are an important part of my country's traditional dietary structure, and they are the second largest ration crops after rice. In order to ensure the food safety of the common people, in November 2017, the State Food and Drug Administration issued the "Announcement on Further Strengthening the Quality and Safety Supervision of Wheat Flour" (No. 132 of 2017), stating that "it is strictly forbidden for manufacturers to add benzoyl peroxide and hypophosphorous acid to wheat flour. Sodium, thiourea, resorcinol, persulfate, thiadiazole, kojic acid and other non-food raw materials”. However, in order to improve the appearance and quality of wheat flour, there are still illegal enterprises adding compounds such as ko...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/02G01N30/06G01N30/34G01N30/78G01N30/86B01J20/286
CPCG01N30/02G01N30/06G01N30/34G01N30/78G01N30/8679B01J20/286G01N2030/027G01N2030/062G01N2030/065
Inventor 蒋航宇李玉宝苏明刘婧玮杨蕊舒玲
Owner SICHUAN LIGHT INDUSTRY RESEARCH AND DESIGN INST
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