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Sources of Food Contamination01:29

Sources of Food Contamination

Contamination of food by microbial agents and natural toxins poses significant risks to public health. These hazards can be introduced at various points across the food supply chain, ranging from environmental sources to processing and storage stages. Understanding these contamination pathways is critical for developing strategies to ensure food safety.Seafood is particularly vulnerable to contamination through both environmental exposure and microbial colonization. Toxins from harmful algal...

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Multielement Composition Analysis of Cicada as an Edible Insect and Dietary Risk Assessment.

Guotao Ding1, Mengyu Liu1, Yanfei Fang1

  • 1Handan Municipal Centre for Disease Prevention and Control, No. 581 Beicang Road (A), Handan 056008, China.

Toxics
|November 27, 2025
PubMed
Summary

Edible cicadas from China are rich in essential trace elements like zinc, copper, and selenium. Multielement analysis confirms a low risk from potentially toxic elements, supporting their role as a nutritious food source.

Keywords:
Hazard quotient (HQ)Hazard quotient (ICP-MS)cicadaentomophagymultielement analysis

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Area of Science:

  • Food Science
  • Analytical Chemistry
  • Toxicology

Background:

  • Cicadas are a traditional food source in China.
  • Assessing the nutritional and safety profile of edible insects is crucial for food security.
  • Understanding the elemental composition of cicadas is important for dietary evaluations.

Purpose of the Study:

  • To determine the multielement composition of cicadas.
  • To evaluate the risk associated with potentially toxic elements in cicadas.
  • To assess the levels of essential trace elements in cicadas compared to traditional foods.

Main Methods:

  • Multielement analysis using Inductively Coupled Plasma-Mass Spectrometry (ICP-MS).
  • Collection of 40 cicada samples from Hebei Province, China.
  • Statistical analyses including Principal Component Analysis (PCA), cluster analysis, and correlation analysis.
  • Hazard Quotient (HQ) calculation for potentially toxic elements.

Main Results:

  • 25 elements were detected in cicada samples.
  • 12 elements (e.g., Al, Mn, Zn, Cu, Cd, Se, As, Pb, Co) were found in higher concentrations than in mushroom and vegetable reference samples.
  • Essential trace elements (Zn, Cu, Se) were 1.7 to 101.9 times higher than in mushrooms or vegetables.
  • Hazard Quotient (HQ) values for Cd, As, Pb, and Al were below risk thresholds (0.281 for males, 0.324 for females).

Conclusions:

  • Cicadas exhibit a low risk profile regarding potentially toxic elements.
  • Cicadas are a rich source of essential trace elements.
  • The findings support the nutritional value and safety of cicadas as an edible insect.