Molecules (Jan 2023)

Determination of Free Histidine in Complex Hair Care Products with Minimum Sample Preparation Using Cation-Exchange Chromatography and Post Column Derivatization

  • Apostolia Tsiasioti,
  • Constantinos K. Zacharis,
  • Paraskevas D. Tzanavaras

DOI
https://doi.org/10.3390/molecules28020888
Journal volume & issue
Vol. 28, no. 2
p. 888

Abstract

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In this communication, we describe the first analytical method for the determination of free histidine in hair care products (shampoos and conditioners). Cation-exchange chromatography combined with postcolumn derivatization and fluorimetric detection enabled the accurate (recovery: 83.5–114.8%) and precise (2.4–5.6% RSD) determination of free histidine without matrix interferences at concentration levels down to 1.5 mg kg−1. Real commercially available samples were found to contain the amino acid at levels ranging between 70 and 535 mg kg−1.

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