Mineral analysis reveals extreme manganese concentrations in wild harvested and commercially available edible termites
Artikel i vetenskaplig tidskrift, 2020

Termites are widely used as a food resource, particularly in Africa and Asia. Markets for insects as food are also expanding worldwide. To inform the development of insect-based foods, we analysed selected minerals (Fe-Mn-Zn-Cu-Mg) in wild-harvested and commercially available termites. Mineral values were compared to selected commercially available insects. Alate termites, of the genera Macrotermes and Odontotermes, showed remarkably high manganese (Mn) content (292-515 mg/100 gdw), roughly 50-100 times the concentrations detected in other insects. Other mineral elements occur at moderate concentrations in all insects examined. On further examination, the Mn is located primarily in the abdomens of the Macrotermes subhyalinus; with scanning electron microscopy revealing small spherical structures highly enriched for Mn. We identify the fungus comb, of Macrotermes subhyanus, as a potential biological source of the high Mn concentrations. Consuming even small quantities of termite alates could exceed current upper recommended intakes for Mn in both adults and children. Given the widespread use of termites as food, a better understanding the sources, distribution and bio-availability of these high Mn concentrations in termite alates is needed.

Författare

Rudi L. Verspoor

University of Liverpool

Murielle Soglo

IITA Research Station

Razack Adeoti

IITA Research Station

Rousseau Djouaka

IITA Research Station

Sam Edwards

University of Liverpool

Rikard Fristedt

Chalmers, Biologi och bioteknik, Livsmedelsvetenskap

Maud Langton

Sveriges lantbruksuniversitet (SLU)

Rosana Moriana

Sveriges lantbruksuniversitet (SLU)

Matthew Osborne

Stockholm Environment Institute

Catherine L. Parr

University of Witwatersrand

University of Liverpool

Universiteit van Pretoria

Kathryn Powell

University of Liverpool

Gregory D.D. Hurst

University of Liverpool

Rikard Landberg

Chalmers, Biologi och bioteknik, Livsmedelsvetenskap

Scientific Reports

2045-2322 (ISSN)

Vol. 10 1 6146

Ämneskategorier

Livsmedelsvetenskap

Miljövetenskap

Näringslära

DOI

10.1038/s41598-020-63157-7

PubMed

32273555

Mer information

Senast uppdaterat

2020-05-20