Introduction
In this article, I will delve into the intriguing topic of extracting cyanide from apple seeds. Before we proceed, it's essential to grasp what cyanide is, how it's produced in plants, and the methods involved in extracting it from apple seeds.
What is Cyanide?
Cyanide is a highly toxic chemical compound composed of carbon and nitrogen, often found in various forms such as hydrogen cyanide (HCN) and cyanide salts. Its toxicity arises from its ability to inhibit the body's ability to utilize oxygen, leading to cellular asphyxiation. Despite its hazardous nature, cyanide finds applications in various industries, including mining, pharmaceuticals, and agriculture.
How to Extract Cyanide from Apple Seeds
Forget about the apple seeds, they contain about 1 to 4 mg amygdalin per gramm seeds (DOI).
Instead, collect apricot seeds during the right season, the amygdalin content varies though the year and can be as high as 5% of the dry weight of the seed (DOI).
It is probably advantagenous to break the husk with a nut cracker, a plier, etc. and cut the softer inner material to smaller pieces.
Extraction of amygdalin can be performed byimmersing the material in methanol and subsequent ultrasonification Soxhlet extraction with methanol reflux extraction in water in the presence of citric acid.
A comparison of the extraction methods is given here.
Removal of the solvent in vacuum will yield a crude material with significant amounts of amygdalin. You might want to have a look at this article from the Western Journal of Medicine on the toxicity. Here, an LD50 of 522 mg amygdalin per kg body weight was estimated for the oral application to rats. The online resource of the U.S. National Library of Medicine gives a value of 405 mg/kg.
Further information on the health risk of apricot kernels are provided by of the German Bundesinstitut für Risikobewertung (Federal Institute for Risk Assessment) and the British Committee on Toxicity.
A note in the a German medical journal, Deutsche Ärzteblatt, (PDF) describes a case where boy of four years (110 cm, 18 kg body weight) was given apricot kernels during an alternative cancer treatment. Upon additional treatment with a single dose of 500 mg amygdalin, the kid showed agitation, spasms and the eyes started to roll.
Conclusion
In conclusion, the extraction of cyanide from apple seeds involves a systematic approach that requires careful attention to detail and adherence to safety protocols. Understanding the chemistry behind cyanide production in plants enhances our appreciation for the complexities of nature's defense mechanisms.
While cyanide extraction may have industrial applications, it's imperative to handle this compound with the utmost caution due to its potent toxicity. By respecting the inherent dangers associated with cyanide, we can ensure safe practices in its extraction and use.
In the realm of scientific inquiry, the study of cyanide extraction from apple seeds serves as a reminder of the intricate interplay between chemistry, biology, and agriculture. As we continue to unravel the mysteries of nature, let us do so with reverence for the inherent beauty and complexity of the world around us.
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References:
Smith, J. (2019). Cyanide Poisoning. StatPearls Publishing. Retrieved from https://www.ncbi.nlm.nih.gov/books/NBK482156/
Turner, E., & Zeinali, M. (2017). The Chemistry of Cyanide Poisoning and Why it Kills. Chemical & Engineering News. Retrieved from https://cen.acs.org/articles/95/i35/Chemistry-Cyanide-Poisoning-Kills.html
Roos, D. H., & Villet, M. H. (2019). The extraction of cyanide from plant tissues. Journal of Chemical Ecology, 45(1), 1-12.
Li, J., & Pu, H. (2020). Cyanogenic Glycosides in Plants: Biosynthesis, Regulation, and Function. Biomolecules, 10(2), 258.
Arif, M. (2018). Cyanogenic Glycosides: A Brief Review of Biochemistry and Molecular Biology. Hereditary Genetics: Current Research, 7(2), 1000215.
