Evidence map›Paper›PMID 25708890›Full record

ArticleArchives of toxicology2016

Bioavailability of cyanide after consumption of a single meal of foods containing high levels of cyanogenic glycosides: a crossover study in humans.

Klaus Abraham, Thorsten Buhrke, Alfonso Lampen

Registry-linked trialOpen access · hybridAbstract read
In one paragraph

Article in Archives of toxicology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT06491095 (A Randomized, Controlled, Cross-over Trial Examining the Effect of Flaxseed on Blood Cyanide Levels in Healthy Adults), which is not on this map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
6.7field-weighted citation impact, top 4% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

NCT06491095 nanot yet recruitingnot on this mapstarted 2025, after this paper: background citation

A Randomized, Controlled, Cross-over Trial Examining the Effect of Flaxseed on Blood Cyanide Levels in Healthy Adults

TypeinterventionalSponsorSt. Boniface HospitalRan2025 to 2026Enrolled12ConditionsHealthyArms0 g Flax, 40 g whole ground flaxseed, 40 g roasted then ground whole flaxseed, 40 g of whole intact flaxseeds, 28 g flax hulls
3 · Its place in the literature

Who cites it

19 citing papers in PubMed, 101 citations in OpenAlex.

  1. Article
  2. Review
  3. A coumarin-nicotinic hydrazone probe for chromofluorogenic detection of toxic cyanide ions and its application in molecular logic gate and real water samples analysis.Photochemical & photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology · 2025
    Article
  4. Review
  5. Article
  6. Review
  7. Article
  8. Review
  9. Cyanogenic Glycoside Analysis in American Elderberry.Molecules (Basel, Switzerland) · 2021
    Article
  10. Article
  11. Review
  12. Article
  13. Effect of Linseed (Animals : an open access journal from MDPI · 2020
    Article
  14. Article
  15. Article
  16. Article
  17. Cyanides in the environment-analysis-problems and challenges.Environmental science and pollution research international · 2017
    Review
  18. Article
  19. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors at 1 institution in 1 country.

Klaus AbrahamDepartment of Food Safety, Federal Institute for Risk Assessment (BfR), Max-Dohrn-Str. 8-10, 10589, Berlin, Germany. klaus.abraham@bfr.bund.de.
Thorsten BuhrkeDepartment of Food Safety, Federal Institute for Risk Assessment (BfR), Max-Dohrn-Str. 8-10, 10589, Berlin, Germany.
Alfonso LampenDepartment of Food Safety, Federal Institute for Risk Assessment (BfR), Max-Dohrn-Str. 8-10, 10589, Berlin, Germany.
Federal Institute for Risk Assessment · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The acute toxicity of cyanide is determined by its peak levels reached in the body. Compared to the ingestion of free cyanide, lower peak levels may be expected after consumption of foods containing cyanogenic glycosides with the same equivalent dose of cyanide. This is due to possible delayed and/or incomplete release of cyanide from the cyanogenic glycosides depending on many factors. Data on bioavailability of cyanide after consumption of foods containing high levels of cyanogenic glycosides as presented herein were necessary to allow a meaningful risk assessment for these foods. A crossover study was carried out in 12 healthy adults who consumed persipan paste (equivalent total cyanide: 68 mg/kg), linseed (220 mg/kg), bitter apricot kernels (about 3250 mg/kg), and fresh cassava roots (76-150 mg/kg), with each "meal" containing equivalents of 6.8 mg cyanide. Cyanide levels were determined in whole blood using a GC-MS method with K(13)C(15)N as internal standard. Mean levels of cyanide at the different time points were highest after consumption of cassava (15.4 µM, after 37.5 min) and bitter apricot kernels (14.3 µM, after 20 min), followed by linseed (5.7 µM, after 40 min) and 100 g persipan (1.3 µM, after 105 min). The double dose of 13.6 mg cyanide eaten with 200 g persipan paste resulted in a mean peak level of 2.9 µM (after 150 min). An acute reference dose of 0.075 mg/kg body weight was derived being valid for a single application/meal of cyanides or hydrocyanic acid as well as of unprocessed foods with cyanogenic glycosides also containing the accompanying intact β-glucosidase. For some of these foods, this approach may be overly conservative due to delayed release of cyanide, as demonstrated for linseed. In case of missing or inactivated β-glucosidase, the hazard potential is much lower.

Indexed as

Foodborne DiseasesAdultBiological AvailabilityCross-Over StudiesCyanidesFemaleFlaxGlycosidesHumansMaleManihotMiddle AgedPrunus armeniacaCyanidescyanogenic glycosidesGlycosidesBioavailabilityBitter apricot kernelsCassavaCyanideCyanogenic glycosidesLinseedPersipan

Identifiers

PMID25708890
PMCPMC4754328
OpenAlexW2041542816

What OpenQuestion holds

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Registered trials

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.