There’s Chelates in Cilantro?

The answer……………..yes there is.  Great progress for the lesson portion of the internship.

Yesterday we were able to produce a simple aqueous extraction of cilantro. Filtered and centrifuged the extraction to remove any impurities, which can be seen below:

Aqueous Extraction Process
Filtration Process
Centrifuge to remove any remaining particles
Cilantro Extraction

After purifying the extraction then we placed it to a test.

Left to Right. Sample 1: Extraction Only, Sample 2: Extraction with Iron Chloride Solution, Sample 3: Extraction and Potassium Thiocyanate (iron detector), Sample 4: Iron Chloride and Potassium Thiocyanate, Sample 5 and 6: Iron Chloride + Potassium Thiocyanate + Extraction.

In Sample 4 we have iron chloride and potassium thiocyanate, which produces a nice bright red color due to the thiocyanate reacting with the free iron atoms in solution.  Sample 5 was conducted by adding the iron chloride and the extract at once.  The potassium thiocyanate was introduced to the sample and no color change.

Sample 6 was conducted by adding the iron solution and potassium thiocyanate producing a color change as seen in Sample 4 (bright red).  Once the extract was introduced to the sample it produced a color change resulting as the one in Sample 5.  Thus, demonstrating the chelating properties of Cilantro.  Tomorrow I will be posting a video of these results.  So excited to see this occur.  Until tomorrow.

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