浙江农业学报 ›› 2022, Vol. 34 ›› Issue (12): 2728-2739.DOI: 10.3969/j.issn.1004-1524.2022.12.16

• 食品科学 • 上一篇    下一篇

QuEChERS-超高效液相色谱-串联质谱法同时测定婴幼儿辅食果泥中5种链格孢霉毒素

邓涛1(), 杨华2, 肖英平2, 汪雯2, 吕文涛2, 王小骊2, 吴振1,*(), 吉小凤2,*()   

  1. 1.宁波大学 食品与药学学院,浙江 宁波 315000
    2.浙江省农业科学院 农产品质量安全与营养研究所,浙江 杭州 310021
  • 收稿日期:2022-01-24 出版日期:2022-12-25 发布日期:2022-12-26
  • 通讯作者: 吴振,吉小凤
  • 作者简介:吉小凤,E-mail:jixiaofeng@zaas.ac.cn
    *吴振,E-mail: wuzhen@nbu.edu.cn;
    邓涛(1997—),男,安徽滁州人,硕士研究生,研究方向为食品检测。E-mail:dengtao8822@163.com
  • 基金资助:
    国家重点研发计划政府间合作项目(2019YFE0103900)

Simultaneous determination of five Alternaria toxins by QuEChERS-ultra-performance liquid chromatography-tandem mass spectrometry in fruit puree for infants

DENG Tao1(), YANG Hua2, XIAO Yingping2, WANG Wen2, LYU Wentao2, WANG Xiaoli2, WU Zhen1,*(), JI Xiaofeng2,*()   

  1. 1. College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo 315000, Zhejiang, China
    2. Institute of Agro-Product Safety and Nutrition, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
  • Received:2022-01-24 Online:2022-12-25 Published:2022-12-26
  • Contact: WU Zhen,JI Xiaofeng

摘要:

建立婴幼儿辅食果泥中细交链孢菌酮酸、腾毒素、交链孢酚单甲醚、交链孢酚和交链孢烯5种链格孢霉毒素的QuEChERS-超高效液相色谱-串联质谱分析方法。待测样品经乙腈-水-甲酸混合液(79∶20∶1,V/V/V)提取,4 g 无水硫酸镁、0.5 g 无水乙酸钠和0.5 g 氯化钠脱水盐析,100 mg C18净化,经Waters ACQUITY UPLC® HSS T3 (2.1 mm×100 mm, 1.8 μm)液相色谱柱分离,以5 mmol·L-1 的乙酸铵水溶液和甲醇作为流动相梯度洗脱,在电喷雾离子源电离,多反应监测模式条件下进行测定,基质外标法定量。该方法在0.1~200 μg·L-1 范围内线性关系良好,决定系数(R2)均大于0.998,检测限和定量限分别为0.1 μg·kg-1 和0.3 μg·kg-1。不同加标水平的平均回收率为73.8%~118.0%,相对标准偏差为2.3%~8.5%。结果表明,该方法高效、准确、灵敏,适用于婴幼儿辅食果泥中5种链格孢霉毒素确证检测。

关键词: 果泥, 链格孢霉毒素, 食品安全

Abstract:

A QuEChERS-ultra-performance liquid chromatography-tandem mass spectrometry method for the determination of five Alternaria toxins including tenuazonic acid, tentoxin, aletrnariol monomethyl ether, alternariol and altenuene in fruit puree for infants was established. A fruit puree sample was extracted with a mixture solution of acetonitrile∶water∶formic acid (79∶20∶1, V/V/V), followed by a salting-out extraction using 0.5 g anhydrous CH3COONa and 0.5 g NaCl coupled with a dehydration step with the addition of 4 g anhydrous MgSO4, and a purification step with 100 mg C18. An ACQUITY UPLC® HSS T3 column (2.1 mm×100 mm, 1.8 μm) was used for chromatographic separation. The mobile phase consisted of 5 mmol·L-1 ammonium acetate aqueous solution and methanol and a gradient elution program was applied. The measurement was carried out under the condition of multiple response monitoring mode and electrospray ion source. The matrix-matched external standard was used for quantitative analysis. The linearity of the method was in the range of 0.1-200 μg·L-1, with the determination coefficients (R2) greater than 0.998. The limits of detection and quantification were 0.1 μg·kg-1 and 0.3 μg·kg-1, respectively. The average recoveries were in the range of 73.8% to 118.0% with the relative standard deviations of 2.3% to 8.5%. The results demonstrated that the developed method was efficient, accurate, sensitive, and suitable for the quantitative determination of five Alternaria toxins in fruit puree for infants.

Key words: fruit puree, Alternaria toxin, food safety

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