Scientific Research and Essays

  • Abbreviation: Sci. Res. Essays
  • Language: English
  • ISSN: 1992-2248
  • DOI: 10.5897/SRE
  • Start Year: 2006
  • Published Articles: 2758

Full Length Research Paper

Physico-chemical quality of some commonly consumed stimulants and spices in Nigeria

John Adekunle Oyedele Oyekunle
  • John Adekunle Oyedele Oyekunle
  • Department of Chemistry, Obafemi Awolowo University, Ile-Ife, Nigeria.
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Aderemi Okunola Ogunfowokan
  • Aderemi Okunola Ogunfowokan
  • Department of Chemistry, Obafemi Awolowo University, Ile-Ife, Nigeria.
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Abolanle Saheed Adekunle
  • Abolanle Saheed Adekunle
  • Department of Chemistry, Obafemi Awolowo University, Ile-Ife, Nigeria.
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Michael Sola Akanni
  • Michael Sola Akanni
  • Department of Chemistry, Obafemi Awolowo University, Ile-Ife, Nigeria.
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Winston Doherty
  • Winston Doherty
  • Department of Chemistry, Obafemi Awolowo University, Ile-Ife, Nigeria.
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Damilola Olusanya Abraham
  • Damilola Olusanya Abraham
  • Department of Chemistry, Obafemi Awolowo University, Ile-Ife, Nigeria.
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  •  Accepted: 05 November 2012
  •  Published: 31 January 2013

Abstract

Commonly consumed parts of Tetracarpidium conophoriumGarcinia kolaCola acuminataCola nitida and Afromomum melengueta were investigated for their trace metals, pH, conductivity and total dissolved solid values. Trace metal levels ranged between 42.24 ± 6.23 to 541.51 ± 189.37 µg/g Co and 36500.23 ± 367.01 to 115280.25 ± 397.33 µg/g K. The pH fell within 6.10 ± 0.12 in Tetracarpidium conophorium and 9.25 ± 0.22 in A. melengueta while conductivity values lied between 0.21 ± 0.05 in A. melengueta and 1.92 ± 0.22 in G. kola. Total dissolved solid values ranged from 0.14 ± 0.03 in A. melengueta to 0.99 ± 0.13 µg/g in T. conophoriumG. colaC. nitida and A. melengueta, and might not constitute much risk since alkaline foods are considered healthy for consumption. A sustained consumption of these stimulants might constitute serious health inharmonies to the consumers because of bioaccumulation of heavy metals.

 

Key words: Nigeria, stimulants, mineral content, pH, heavy metals, health risk.