NDLI: Persistence of malachite green and leucomalachite green in perch (Lateolabrax japonicus)

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Persistence of malachite green and leucomalachite green in perch (Lateolabrax japonicus)

Content Provider	Springer Nature Link
Author	Tan, Zhijun Xing, Lihong Guo, Mengmeng Wang, Hongyan Jiang, Yanhua Li, Zhaoxin Zhai, Yuxiu
Copyright Year	2011
Abstract	The persistence of malachite green (MG), and its metabolite leucomalachite green (LMG), in fish tissues is still unclear, leading to many trade disputes. In this research, we established and evaluated an HPLC method that could detect MG and LMG simultaneously, and then investigated the persistence of these two toxins in the tissues of juvenile perch (Lateolabrax japonicus) post sub-chronic MG exposure at 1.0 mg/L. Exposure lasted for 2 h everyday and was repeated six times. The perch were then placed in MG-free seawater for 100 d to eliminate the toxins. Results show that MG accumulated in the tissues, including the gills, liver, muscle, blood and viscera, and then was metabolized rapidly to LMG. The concentrations of these two toxins increased significantly with the accumulation process. In general, the highest concentrations of MG and LMG in all tissue exceeded 1 000 μg/kg, except for MG in the muscle. The order of accumulation levels (highest to lowest) of MG was gill>blood>liver>viscera>muscle, while that of LMG was liver>blood>gill>viscera>muscle. High levels of MG or LMG could persist for several hours but decreased rapidly during the elimination process. The concentration of LMG was much higher than that of MG during the experiment, especially in the gill, liver and blood. Therefore, the three tissues play important roles in toxin accumulation, biotransformation, and elimination. Although the MG and LMG concentrations in muscle were much lower than in other tissues, the content still exceeded the European minimum required performance limit (MRPL), even after 2 400 h (100 d) of elimination. This demonstrates that it is extremely difficult to eliminate MG and LMG from tissues of perch, and therefore use of these toxins is of concern to public health.
Starting Page	647
Ending Page	655
Page Count	9
File Format	PDF
ISSN	02544059
Journal	Chinese Journal of Oceanology and Limnology
Volume Number	29
Issue Number	3
e-ISSN	19935005
Language	English
Publisher	SP Science Press
Publisher Date	2011-05-15
Publisher Place	Heidelberg
Access Restriction	Subscribed
Subject Keyword	persistence residues malachite green leucomalachite green perch Oceanography
Content Type	Text
Resource Type	Article
Subject	Water Science and Technology Oceanography

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