Elemental variations and safety assessment of commercial onions (Allium cepa) by inductively coupled plasma-mass spectrometry and chemometrics


Citation

Koki I. B., . and Kharisu C. S., . and Ikram R., . and Low K. H, . Elemental variations and safety assessment of commercial onions (Allium cepa) by inductively coupled plasma-mass spectrometry and chemometrics. pp. 1717-1724. ISSN 0116-6514

Abstract

The concentrations of Cd As Pb Se Fe Mn Zn and Cu in acid-digested onion samples were determined by inductively coupled plasma mass spectrometry and the corresponding elemental profiles were evaluated by using chemometric techniques. Results from principal component analysis and hierarchical cluster analysis revealed that the spatial variations were highly associated with As Se Pb Zn and Cd which advocated dominance of the site related impacts over colour variant of the onions. Such variation pattern could be partly attributed to the consequences of industrialisation and/or urbanisation. From the safety assessment data concentrations of hazardous elements such as As Cd and Pb were found beyond the World Health Organisation and Food and Agricultural Organisation permissible levels but within the Malaysian regulatory limits except for Pb. The presence of elevated levels of toxic elements beyond the reference limits in the onion varieties could be of health concern if ingested.


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Abstract

The concentrations of Cd As Pb Se Fe Mn Zn and Cu in acid-digested onion samples were determined by inductively coupled plasma mass spectrometry and the corresponding elemental profiles were evaluated by using chemometric techniques. Results from principal component analysis and hierarchical cluster analysis revealed that the spatial variations were highly associated with As Se Pb Zn and Cd which advocated dominance of the site related impacts over colour variant of the onions. Such variation pattern could be partly attributed to the consequences of industrialisation and/or urbanisation. From the safety assessment data concentrations of hazardous elements such as As Cd and Pb were found beyond the World Health Organisation and Food and Agricultural Organisation permissible levels but within the Malaysian regulatory limits except for Pb. The presence of elevated levels of toxic elements beyond the reference limits in the onion varieties could be of health concern if ingested.

Additional Metadata

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Item Type: Article
AGROVOC Term: Onions
AGROVOC Term: Allium cepa
AGROVOC Term: Chemical analysis (methods)
AGROVOC Term: Mass spectrometry
AGROVOC Term: Heavy metals
AGROVOC Term: Trace element content
AGROVOC Term: Toxicity
AGROVOC Term: Colour
AGROVOC Term: Cadmium
AGROVOC Term: Arsenic
Depositing User: Mr. AFANDI ABDUL MALEK
Last Modified: 24 Apr 2025 00:54
URI: http://webagris.upm.edu.my/id/eprint/8754

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