食品科学

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基于空间夹角判据测定水产品中孔雀石绿残留量

胡祥均,刘 柳,王 捷,姚志湘,李登红,赵 娜   

  1. 1.广西科技大学生物与化学工程学院,广西 柳州 545006;
    2.广西科技大学 广西糖资源绿色加工重点实验室,广西 柳州 545006;3.柳州市食品药品稽查支队,广西 柳州 545006
  • 出版日期:2016-06-25 发布日期:2016-06-29
  • 通讯作者: 姚志湘 E-mail:zxyao@gxut.edu.cn
  • 基金资助:

    广西科技计划项目(桂科攻1355010-15);柳州市科技计划项目(2015J030201)

Determination of Malachite Green Residues in Aquatic Products Based on Vector-Subspace Angle Criterion

HU Xiangjun, LIU Liu, WANG Jie, YAO Zhixiang, LI Denghong, ZHAO Na   

  1. 1. College of Biological and Chemical Engineering, Guangxi University of Science and Technology, Liuzhou 545006, China;
    2. Guangxi Key Laboratory of Green Processing of Sugar Resources, Guangxi University of Science and Technology,
    Liuzhou 545006, China; 3. The Food and Drag Inspection Team of Liuzhou, Liuzhou 545006, China
  • Online:2016-06-25 Published:2016-06-29
  • Contact: YAO Zhixiang, E-mail:zxyao@gxut.edu.cn

摘要:

通过高效液相色谱-光谱联用采集数据,应用向量-子空间夹角计算判据,建立水产品中孔雀石绿的快速分析方法。先采用全波长紫外-可见光纤光谱仪建立孔雀石绿的标准光谱数据库,以及市售水产品样品的紫外-可见光谱数据,再通过高效液相色谱-光谱联用方法,建立扣除水产品中待测组分孔雀石绿的本底光谱数据库;运用向量-子空间夹角判据计算草鱼、罗非鱼、黄蜂鱼、海蟹、海虾、玉米螺样品中孔雀石绿的含量。结果表明,在0.2~4.0 μg/mL的线性范围内,孔雀石绿标准工作曲线的线性相关系数r=0.999 7(λ=618 nm),加标回收率为99.24%~109.38%,相对标准偏差小于5.0%。此方法可用于水产品中孔雀石绿残留量的快速检测。

关键词: 向量-子空间夹角, 多波长紫外-可见光谱, 高效液相色谱, 孔雀石绿

Abstract:

Based on the data collected with a high performance liquid chromatograph (HPLC)-spectrometer, vector-subspaceangle criterion was calculated. A new method was developed to rapidly analyze malachite green residues in aquatic products.Multi-wavelength UV-visible optical fiber spectrometer was applied firstly to set up a malachite green standard spectraldatabase and a spectral database for marketed aquatic product samples. Then using HPLC-spectrometer, a backgroundspectral database of malachite green in aquatic products was created. The vector-subspace angle criterion was appliedto calculate the contents of malachite green residues in aquatic products including grass carp, tilapia, yellow catfish, seacrab, shrimp and corn snail. The results showed that within a concentration range of 0.2–4.0 μg/mL, the linear correlationcoefficient for the standard curve was 0.999 7 (at 618 nm), and the recoveries of malachite green in spiked samples were99.24%–109.38%, with a relative standard deviation of less than 5.0%. Thus, this method can be used to rapidly andaccurately detect malachite green residues in aquatic products.

Key words: vector-subspace angle criterion, multi-wavelength UV-visible spectroscopy, high performance liquid chromatography (HPLC), malachite green

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