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Method for detecting cefquinome residual quantity in milk

A technology of cefquinoxime and residues, which is applied in the field of qualitative and quantitative detection of cefquinoxime residues in milk, can solve problems such as low detection limit, and achieve the effect of accurate detection

Inactive Publication Date: 2017-03-22
INST OF AGRI PROD QUALITY SAFETY & STANDARD JIANGXI ACAD OF AGRI SCI
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Problems solved by technology

[0013] (3) Low detection limit in complex and dirty matrices

Method used

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  • Method for detecting cefquinome residual quantity in milk
  • Method for detecting cefquinome residual quantity in milk
  • Method for detecting cefquinome residual quantity in milk

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Embodiment Construction

[0060] Below by embodiment the present invention will be further described. It should be understood that the methods described in the examples of the present invention are only used to illustrate the present invention, rather than to limit the present invention, and any simple improvement to the preparation method of the present invention under the premise of the concept of the present invention belongs to the protection scope of the present invention.

[0061] Accurately measure 2.00mL milk sample into a 50mL polypropylene centrifuge tube, add 2mL water, then add 10mL 1% acetic acid acetonitrile, ultrasonically extract for 3min, centrifuge at 4500r / min for 10min at 4°C, transfer the supernatant to 100mL chicken heart In the bottle, the residue was repeatedly extracted once with 10 mL of acetonitrile solution, and the two extracts were combined. Concentrate the extract under reduced pressure in a water bath at 40°C until nearly dry, add 5 mL of water to dissolve it, and put it...

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Abstract

The invention relates to a method for detecting cefquinome residual quantity in milk through ultra-high performance liquid chromatography-electric spraying tandem mass spectrometry. A technological method is supplied for monitoring the cefquinome residual quantity in milk.

Description

technical field [0001] The invention belongs to the field of drug residue detection, in particular to a method for qualitatively and quantitatively detecting cefquinome residue in milk. Background technique [0002] Cephalosporin antibiotics are mainly used to treat various infections caused by Gram bacteria. They have the advantages of broad antibacterial spectrum, high curative effect, low toxicity, and less allergic reactions. However, excessive antibiotics have toxic and side effects, which are mainly reflected in brain damage. Nerve, hearing, and kidney damage. my country has regulated the limits of cephalosporins in products such as beef, pork and milk. [0003] Cefquinome is the first fourth-generation cephalosporin antibiotic for animals. It achieves bactericidal effect by inhibiting the synthesis of cell walls. It has broad-spectrum antibacterial activity and strong antibacterial activity. It can reach a higher concentration in mammary gland tissue. Cefquinome has...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/02G01N30/06
CPCG01N30/02G01N30/06
Inventor 胡丽芳周瑶敏徐俊聂根新张金艳
Owner INST OF AGRI PROD QUALITY SAFETY & STANDARD JIANGXI ACAD OF AGRI SCI
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