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Screening method for 43 artificial synthetic pigments in aquatic product

A technology for artificially synthesizing pigments and aquatic products, applied in measuring devices, instruments, scientific instruments, etc., can solve problems such as low detection efficiency, low accuracy, and complex processing, and achieve wide application range, simple and fast operation, and high The effect of sensitivity

Active Publication Date: 2015-07-01
ZHOUSHAN INST FOR FOOD & DRUG CONTROL +1
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Problems solved by technology

But its disadvantage is that the sample pretreatment is complicated, and it can only be measured and corrected by first-level information. Only liquid chromatography / time of flight is used, so the detection efficiency is not high, the speed is not fast, and the accuracy is not high. Moreover, the above method, It can only be applied to the screening of acid pigments, but not to the screening of basic pigments, so this detection method needs to be further improved

Method used

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  • Screening method for 43 artificial synthetic pigments in aquatic product
  • Screening method for 43 artificial synthetic pigments in aquatic product
  • Screening method for 43 artificial synthetic pigments in aquatic product

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Embodiment Construction

[0031] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0032] 1. The detection method of artificially synthesized 28 kinds of acidic pigments is explained in detail.

[0033] Such as Figure 1 to Figure 6 Shown:

[0034] 1 reagent

[0035]1.1 Standard substances: Amaranth (Acid Red 27, purity 89%), Sunset Yellow (Sunset Yellow FCF, purity 90%), Indigo carmine (purity 89%), Allura Red AC (purity 91%) , Bright Black PN (Brilliant Black BN, purity 91%), Naphthol Yellow S (Naphthol Yellow S, purity 89%), Acid Red 18 (New Coccine (Acid Red 18; Red 6), purity 91%), Acid Yellow 17 (Acid Yellow 17, purity 89%), quinoline yellow (Quinoline yellow, purity 91%), acid red 2G (Acid Red 1, purity 89%), bright green SF (Light Green SF, purity 91%), even Nitrogen red (Azorubine (Carmoisine), purity 91%), acid red 26 (Ponceau Xylidine, purity 91%), wool green (Wool Green S (acid green 50), purity 91%), orange ...

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Abstract

The invention relates to a screening method for 43 artificial synthetic pigments in an aquatic product. The method comprises the following steps: screening by virtue of quadrupole tandem time-of-flight mass spectrometry of liquid chromatogram; calling an established mass spectrometry screening database to automatically scan and retrieve in a molecular matching mode; through a C18 analytic column, carrying out gradient elution by taking an acetonitrile solution containing 0.1% of formic acid in a 5mmol / L ammonium acetate aqueous solution as a moving phase, wherein the flow rate is 0.3ml / minute; and detecting under a negative ion mode by using an electrospray ionization source, extracting a suspicious sample, purifying the sample by virtue of a matrix dispersion method, carrying out liquid chromatographic separation, quantitatively determining by virtue of an external standard method, and verifying. The screening method has the advantages that the detection method is simple and quick to operate and high in sensitivity. By adopting the matrix dispersion method to purify the sample, the interference of matrix components is effectively reduced. Misjudgment events such as false positive events are greatly reduced by virtue of the qualitative function of the quadrupole tandem time-of-flight mass spectrometry, so that the monitoring ability of the detection mechanism on the risk of the aquatic product is extremely enhanced.

Description

technical field [0001] The invention relates to a detection method for food additives, in particular to a screening method for 43 kinds of artificially synthesized pigments in aquatic products. Background technique [0002] In recent years, illegal addition and abuse of pigments in aquatic products have emerged in an endless stream. Therefore, related detection methods have also been concerned and studied. Synthetic pigments are mainly used in industrial production such as dyeing wool, leather, silk, etc. due to their bright color and easy coloring. They are all toxic chemicals. However, in order to save costs, some criminals illegally add synthetic pigments, such as azorubin, acid red, Sudan red, etc., to aquatic products, which has caused great harm to people's health and social stability. Therefore, it is necessary to establish a screening method for artificial pigments in aquatic products, and provide technical means for effectively curbing illegal additions of aquatic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/88
Inventor 黄鹂周勇王萍亚戴意飞蒋玲波赵巧灵
Owner ZHOUSHAN INST FOR FOOD & DRUG CONTROL
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