食品科学 ›› 2011, Vol. 32 ›› Issue (4): 181-184.doi: 10.7506/spkx1002-6630-201104039

• 分析检测 • 上一篇    下一篇

昆明系小鼠生物法定量测定水产品中河豚毒素

王 静,杨丽君,李兆杰,赵 萌,宋晓华,刘玉敏   

  1. 威海出入境检验检疫局,山东威海
  • 出版日期:2011-03-12 发布日期:2017-04-06
  • 基金资助:
    2009 年国家质量监督检验检疫总局出入境检验检疫行业标准制(修)订计划项目(2009B138)

Quantitative Detection of Tetrodotoxin Using Kunming Strain Mice

WANG Jing,YANG Li-jun,LI Zhao-jie,ZHAO Meng,SONG Xiao-hua,LIU Yu-min   

  1. Weihai Entry-exit Inspection and Quarantine Bureau, Weihai 264205, China
  • Online:2011-03-12 Published:2017-04-06

摘要: 为建立昆明系小鼠定量测定河豚毒素(TTX)方法,选用体质量19~21g的昆明系小鼠作为实验对象,用不同质量浓度TTX溶液腹腔注射小鼠。结果显示:TTX致昆明系小鼠的半数致死量(LD50)为0.18μg,小鼠死亡时间与TTX注射剂量满足方程Y=e(0.357/X+1.005)。此外,采用体积分数0.5%乙酸溶液提取TTX,回收率达到90%以上,对样品的最低检测限为0.56μg/g。昆明系小鼠定量测定河豚毒素,准确、稳定、方便快捷,可用于水产品安全检测。

关键词: 河豚毒素, 半致死浓度, 昆明系小鼠, 提取

Abstract: This study was aimed at establishing a laboratory method for the quantitative detection of tetrodotoxin (TTX). A bioassay was developed by injecting intraperitoneally TTX at various dosages to Kunming strain male mice with body weights of 19-21 g. Results indicated that the 50% lethal dose (LD50) of TTX for Kunming strain mice was 0.18μg. The relationship between TTX dosage and the mean death time of Kunming mice could be expressed as Y = e(0.357/ X +1.005). In addition, a high recovery rate of TTX was achieved by using 0.5% (V/V) acetic acid to extract TTX from globefish, which reached up to 90%. However, the detection limit of the assay for samples was 0.56μg/g. Therefore, Kunming strain mice can be used to quantitatively determine TTX in an accurate, stable and convenient manner, which is promising in the safety control of fishery products.

Key words: tetrodotoxin, 50% lethal dose (LD50), Kunming strain mouse, extraction

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