Document Detail

Toxicity of Iceland lichen and reindeer lichen.
MedLine Citation:
PMID:  3468923     Owner:  NLM     Status:  MEDLINE    
Iceland lichen (Cetraria islandica) is sold in health food stores to prevent various disorders. In olden times it and sometimes also reindeer lichen (Cladonia sp.) have been used as emergency food. Lichen contains bitter and potentially toxic lichen acids and it also concentrates heavy metals. Therefore lichen toxicity was studied with traditional pretreatment methods (boiling, ash-soaking or both). Untreated and only shortly boiled lichens were lethally toxic to mice in 50 and 25% w/w mixtures in food, but when ash-soaking was added mice tolerated Cetraria (but not Cladonia) reasonably well for 3 weeks. In a 3 month test in rats 25% mixture of Cladonia was tolerated well and blood tests were normal at the end. However, urinary protein was increased, the autopsies revealed kidney changes corresponding to a mild heavy metal poisoning, as the lead concentrations in kidney and lichen were high.
M M Airaksinen; P Peura; S Antere
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Archives of toxicology. Supplement. = Archiv für Toxikologie. Supplement     Volume:  9     ISSN:  0171-9750     ISO Abbreviation:  Arch. Toxicol. Suppl.     Publication Date:  1986  
Date Detail:
Created Date:  1987-03-13     Completed Date:  1987-03-13     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  7802567     Medline TA:  Arch Toxicol Suppl     Country:  GERMANY, WEST    
Other Details:
Languages:  eng     Pagination:  406-9     Citation Subset:  IM    
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MeSH Terms
Food Handling
Kidney / pathology
Lichens / analysis*
Metals / analysis
Plant Poisoning / etiology*
Plants, Edible / analysis*
Plants, Toxic / analysis*
Reg. No./Substance:

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