This is a preprint, a preliminary version of a manuscript that has not completed peer review at a journal. Research Square does not conduct peer review prior to posting preprints. The posting of a preprint on this server should not be interpreted as an endorsement of its validity or suitability for dissemination as established information or for guiding clinical practice.
Research
Xufeng Bai
HZAU: Huazhong Agriculture University
Corresponding Author
ORCiD: https://orcid.org/0000-0002-9372-6200
License:
This work is licensed under a CC BY 4.0 License. Read Full License
Background
Red swamp crayfish (Procambarus clarkii) is one of the important aquatic foods for human. Trace elements are indispensable for human to maintain health. They could be enriched by crayfish lived in benthic habitat. However, the trace essential element in crayfish was less reported. In this study, we investigated the trace elements of Fe, Mn, Cu, Zn and Se accumulation in red swamp crayfish.
Methods
Fifteen crayfishes in average, three samples of sediments and water were respectively collected in each location of the fifteen villages located on Hubei and Hunan province of China. Besides, fifteen individuals for red swamp crayfish (Procambarus clarkii), variegated carp (Hypophthalmichthys nobilis) and hairy crabs (Eriocheir sinensis) were respectively collected in the village of Zhutong of Hubei province in China. Inductively coupled plasma mass spectrometry (ICP-MS) was used to perform the examination of trace elements. SPSS software and Duncan test were employed to conduct statistical analysis, respectively.
Results
The concentrations of the five elements were highest in haptopancreas, but two of them (Fe and Mn) were lowest in abdominal muscle. The concentration of Cu, Zn and Se in abdominal muscle was higher than those in exoskeleton. The concentrations of Cu and Se in abdominal muscle of crayfish from Ensi region was highest comparing to the other three regions. There was a highly significant positive correlation for the concentrations of Cu and Se between crayfish and environment. In addition, we found crayfish could specifically enrich Se element. The similar situations were also found in the two investigated freshwater animals variegated carp (Hypophthalmichthys nobilis) and hairy crabs (Eriocheir sinensis).
Conclusion
The five essential elements were enriched in the abdominal muscle of crayfish, but no excess threshold of food safety standard. The supplement of selenium for human could be realized by consuming crayfish and other freshwater animals.
Keywords
Red swamp crayfish (Procambarus clarkii), Essential elements, Se accumulation, Food nutrition
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This is a preprint, a preliminary version of a manuscript that has not completed peer review at a journal. Research Square does not conduct peer review prior to posting preprints. The posting of a preprint on this server should not be interpreted as an endorsement of its validity or suitability for dissemination as established information or for guiding clinical practice.
Research
Xufeng Bai
HZAU: Huazhong Agriculture University
Corresponding Author
ORCiD: https://orcid.org/0000-0002-9372-6200
Badges
Prescreen
This manuscript passed our Prescreen assessment
Complete author information
Appropriate declaration statements
Potential risks to human health
Prescreen
History
CURRENT STATUS: Posted
Version 1
Posted 05 Jan, 2021
No community comments so far
Metrics
Comments: 0
PDF Downloads: ...
HTML Views: ...
License:
This work is licensed under a CC BY 4.0 License. Read Full License
Background
Red swamp crayfish (Procambarus clarkii) is one of the important aquatic foods for human. Trace elements are indispensable for human to maintain health. They could be enriched by crayfish lived in benthic habitat. However, the trace essential element in crayfish was less reported. In this study, we investigated the trace elements of Fe, Mn, Cu, Zn and Se accumulation in red swamp crayfish.
Methods
Fifteen crayfishes in average, three samples of sediments and water were respectively collected in each location of the fifteen villages located on Hubei and Hunan province of China. Besides, fifteen individuals for red swamp crayfish (Procambarus clarkii), variegated carp (Hypophthalmichthys nobilis) and hairy crabs (Eriocheir sinensis) were respectively collected in the village of Zhutong of Hubei province in China. Inductively coupled plasma mass spectrometry (ICP-MS) was used to perform the examination of trace elements. SPSS software and Duncan test were employed to conduct statistical analysis, respectively.
Results
The concentrations of the five elements were highest in haptopancreas, but two of them (Fe and Mn) were lowest in abdominal muscle. The concentration of Cu, Zn and Se in abdominal muscle was higher than those in exoskeleton. The concentrations of Cu and Se in abdominal muscle of crayfish from Ensi region was highest comparing to the other three regions. There was a highly significant positive correlation for the concentrations of Cu and Se between crayfish and environment. In addition, we found crayfish could specifically enrich Se element. The similar situations were also found in the two investigated freshwater animals variegated carp (Hypophthalmichthys nobilis) and hairy crabs (Eriocheir sinensis).
Conclusion
The five essential elements were enriched in the abdominal muscle of crayfish, but no excess threshold of food safety standard. The supplement of selenium for human could be realized by consuming crayfish and other freshwater animals.
Figure 1
Figure 2
This is a list of supplementary files associated with this preprint. Click to download.
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