Method adopting ultra-high performance liquid chromatography-quadrupole static electric field track ion trap mass spectrum for screening corrosion remover in milk and dairy products

Abstract

The invention discloses a method adopting an ultra-high performance liquid chromatography-quadrupole static electric field track ion trap mass spectrum for screening a corrosion remover in milk and dairy products, and belongs to the technical field of food safety testing. An optimized QuEChERS method is adopted for preprocessing a sample; the ultra-high performance liquid chromatography-quadrupole static electric field track ion trap mass spectrum is applied for performing screening, full-scanning/data dependency collection, full-scanning/variable data independent collection and a full-scanning/full-ion fragmentation collection scanning mode are adopted, positive ion or negative ion mode scanning is selected, and complete first-order or second-order spectra are obtained; Exact Finder 2.5 software is applied for processing the obtained first-order or second-order spectra, and compound information is extracted. Information in a building spectrum library and a tested substance screening result are compared, and the composition of the corrosion remover in milk and dairy products is ensured. An adopted mass spectrometer has the main advantages of being high in resolution, accurate in qualitative and quantitative result, high in sensitivity, high in quality precision and the like and can be applied to complex matrix analysis.

Description

[0001] 【Technical field】 [0002] The invention belongs to the technical field of food safety detection, in particular to an ultra-high performance liquid chromatography-quadrupole electrostatic field orbital ion trap mass spectrometry screening method for preservatives in milk and dairy products. [0003] 【Background technique】 [0004] Nowadays, preservatives have been widely used in food production. Adding preservatives to milk and dairy products can prolong the shelf life of products. With the improvement of living standards, people pay more and more attention to the safety of milk and dairy products. Exogenous risk substances are an important aspect that affects the safety of milk and dairy products. More and more attention has been paid to it. Preservatives are a common food additive in dairy products, such as benzoic acid and sorbic acid, which can inhibit the growth and reproduction of microorganisms and prolong the shelf life. The function of preservatives is the acti...

AI Technical Summary

Problems solved by technology

[0005] However, at present, there are few high-throughput and rapid detection methods for exogenous risk substances in milk and dairy products. The pre-treatment operations are complicated, and the cost of materials and equipment is high. They are limited to the rapid detection of several or one type of compounds.

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