食品科学 ›› 2026, Vol. 47 ›› Issue (2): 1-9.doi: 10.7506/spkx1002-6630-20250822-159

• 食品安全快速检测专栏 •    下一篇

利用时间分辨荧光免疫层析法测定调味品中的罗丹明B

王照鹏,高馨妍,刘潇晴,石金瑞,陈伊琳,祝欣雨,陈之岳   

  1. (枣庄学院食品科学与制药工程学院,山东 枣庄 277160)
  • 出版日期:2026-01-25 发布日期:2026-02-05
  • 基金资助:
    山东省重点研发计划项目(2019GSF111042);枣庄学院博士科研基金项目(1020711)

Determination of Rhodamine B in Condiments by Time-Resolved Fluorescence Immunochromatography

WANG Zhaopeng, GAO Xinyan, LIU Xiaoqing, SHI Jinrui, CHEN Yilin, ZHU Xinyu, CHEN Zhiyue   

  1. (College of Food Science and Pharmaceutical Engineering, Zaozhuang University, Zaozhuang 277160, China)
  • Online:2026-01-25 Published:2026-02-05

摘要: 本实验利用时间分辨荧光标记技术和侧流免疫层析技术对调味品中的罗丹明B(rhodamine B,RB)进行检测方法研究,通过优化荧光探针的标记条件、试纸条包被和反应条件等,建立调味品中RB的时间分辨荧光免疫分析法。结果表明,所建立方法对辣椒粉、辣椒油和番茄酱3 种调味品的检出限分别为1.9、0.7、1.5 μg/kg,线性范围分别为3.4~22.4、1.4~14.8、2.4~11.8 μg/kg。在加标回收率实验中其添加回收率范围为87.0%~106.1%,变异系数为5.4%~11.6%。本方法检测结果与液相色谱-串联质谱具有良好相关性(R2=0.941 3),综上,本研究可为解决RB在调味品中的非法添加问题提供新的技术手段。

关键词: 罗丹明B;时间分辨荧光;免疫层析测定;非法添加

Abstract: In this study, a time-resolved fluorescence immunochromatographic assay (TRFICA) was developed for the rapid determination of rhodamine B (RB) in condiments. Labeling conditions for fluorescent probes, test strip coating conditions and reaction conditions were optimized. The limits of detection (LOD) of the TRFICA method were determined to be 1.9, 0.7, and 1.5 µg/kg for chili powder, chili oil and tomato sauce, respectively, and the linear ranges 3.4–22.4, 1.4–14.8, and 2.4–11.8 µg/kg, respectively. Recoveries of RB from spiked samples ranged from 87.0% to 106.1%, with coefficients of variation (CV) between 5.4% and 11.6%. Moreover, a strong correlation was observed between the results obtained by this method and those from liquid chromatography-tandem mass spectrometry (LC-MS/MS) (R2 = 0.941 3). This study presents a novel technical tool that supports efforts to prevent the illegal use of RB in condiments.

Key words: rhodamine B; time-resolved fluorescence; immunochromatographic assay; illegal addition

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