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Research Article Open access CC BY 4.0

Cyanide Toxicity of Freshly Prepared Smoothies and Juices Frequently Consumed

A. Baker, M. C. Garner, K. W. Kimberley, D. B. Sims, J. H. Stordock, R. P. Taggart, D. J. Walton

European Journal of Nutrition & Food Safety · pp. 215–224 · Published 3 Sep 2018

10.9734/EJNFS/2018/44004

Abstract

Aims: This study was conducted to detect the presence of cyanide in popular fruit and vegetable smoothies and juices marketed as raw and natural. Study Design: Eleven (11) popular varieties of drinks were analyzed for total cyanide (TCN).   Drinks contained raw vegetables and fruits, flax seeds, whole apples with seeds, raw almond milk, and pasteurized almond milk as ingredients. Place and Study Duration: Samples were collected from health food eateries located within Las Vegas, Nevada (USA) during the summer of 2017. Methodology: Fifty milliliters (mL) of a homogenized smoothie and juice drink and 1 gram of flax seeds were subjected to the above-referenced methods for sample preparation per USEPA Methods 9012B (digestion) followed by USEPA method 9014 (colorimetry).  Results: The highest TCN was detected in drinks containing raw flax seed followed by unpasteurized raw almond milk, then fresh whole apple juice.  No TCN was observed in drinks that contained none of the above mentioned items (e.g. flax seed, raw almond milk) or those utilizing pasteurized ingredients. Conclusion: This study observed that TCN is present in smoothies and juices containing raw flax seeds, fresh whole apples, and/or unpasteurized almond milk. Concentrations were detected as high as 341 μg L-1 in commercially available smoothies containing vegetables, raw flax seeds, almond milk and fruits. Smoothies with vegetables, fruits, unpasteurized almond milk, and no flax seeds contained 41 ug L-1 TCN, while similar smoothies with pasteurized almond milk contained negligible to 9.6 ug L-1 CN-. Unpasteurized almond milk and raw flax seeds were the major sources of TCN in drinks.  With the increased demand for raw and natural foods, there is a potential sublethal exposure of TCN by consumers.

Cyanide smoothie juice amygdalin linamarin flax seed almonds

References (25)

  1. 1 Cyanide in industrial wastewaters and its removal: A review on biotreatment [DOI]
  2. 2 Glucose repression in yeast [DOI]
  3. 3 Persister cells and the riddle of biofilm survival [DOI]
  4. 4 Cyanides in the environment—analysis—problems and challenges [DOI]
  5. 5 Amygdalin content of seeds, kernels and food products commercially-available in the UK [DOI]
  6. 6 Clinical toxicology of cyanide [DOI]
  7. 7 Bifunctional Fluorescent Calix[4]arene Chemosensor for Both a Cation and an Anion [DOI]
  8. 8 Bioavailability of cyanide after consumption of a single meal of foods containing high levels of cyanogenic glycosides: a crossover study in humans [DOI]
  9. 9 Biological cyanide destruction mediated by microorganisms [DOI]
  10. 10 Potential Toxic Levels of Cyanide in Almonds (Prunus amygdalus), Apricot Kernels (Prunus armeniaca), and Almond Syrup [DOI]
  11. 11 Cyanide Toxicokinetics: The Behavior of Cyanide, Thiocyanate and 2-Amino-2-Thiazoline-4-Carboxylic Acid in Multiple Animal Models [DOI]
  12. 12 Effect of chronic cyanide intoxication on memory in albino rats [DOI]
  13. 13 MEF2C Enhances Dopaminergic Neuron Differentiation of Human Embryonic Stem Cells in a Parkinsonian Rat Model [DOI]
  14. 14 Neurotoxic effect of linamarin in rats associated with cassava (Manihot esculenta Crantz) consumption [DOI]
  15. 15 Drying and processing protocols affect the quantification of cyanogenic glucosides in forage sorghum [DOI]
  16. 16 The adverse effects of long-term cassava (Manihot esculentaCrantz) consumption [DOI]
  17. 17 Pathological changes in growing dogs fed on a balanced cassava (Manihot esculentaCrantz) diet [DOI]
  18. 18 Milk transfer of cyanide and thiocyanate: Cyanide exposure by lactation in goats [DOI]
  19. 19 Relationship of a Degenerative Tropical Neuropathy to Diet: Report of a Field Survey [DOI]
  20. 20 Thyroid function in a cassava-eating population affected by epidemic spastic paraparesis [DOI]
  21. 21 New aspects in pathogenesis of konzo: neural cell damage directly caused by linamarin contained in cassava (Manihot esculenta Crantz) [DOI]
  22. 22 Comparative effects of prolonged administration of cyanide, thiocyanate and chokecherry (Prunus virginiana) to goats [DOI]
  23. 23 Amperometric sensor for cyanide utilizing cyanidase and formate dehydrogenase [DOI]
  24. 24 The effects of chronic cassava consumption, cyanide intoxication and protein malnutrition on glucose tolerance in growing rats [DOI]
  25. 25 Effect of protein supplemented cassava diet in rats.

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