Four fluorescent tricyclic basic dyes with two hollow organic capsules namely cucurbit[n]urils (CB[n]), n = 7
and 8, compose the chemical tongue that is examined for α-amino acids recognition. This array is able to identify and
discriminate 18 α-amino acids up to 10-4 M without the need of enzyme activation. The paper shows the importance of the
classification technique employed in order to reach the highest recognition rate at this concentration.
Keywords: Amino acids, chemical tongue, classification, clustering, colorimetric, machine learning, statistics.
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