APPLICATION OF CAPILLARY ELECTROPHORESIS METHOD FOR DETERMINATION OF L-ARGININE CONTENT IN FEED ADDITIVE

  • Н. P. Ryvak State Scientific Research Control Institute of Veterinary Medicinal Products and Feed Additives, 11, Donetska str., Lviv, 79019, Ukraine
  • T. R. Levytskyy State Scientific Research Control Institute of Veterinary Medicinal Products and Feed Additives, 11, Donetska str., Lviv, 79019, Ukraine
  • R. O. Ryvak State Scientific Research Control Institute of Veterinary Medicinal Products and Feed Additives, 11, Donetska str., Lviv, 79019, Ukraine
  • S. V. Chorniy State Scientific Research Control Institute of Veterinary Medicinal Products and Feed Additives, 11, Donetska str., Lviv, 79019, Ukraine
Keywords: FEED ADDITIVES, AMINO ACIDS, CAPILLARY ELECTROPHORESIS METHOD, L-ARGININE, VALIDATION.

Abstract

The article presents a literature review on the need to balance feed on L-arginine content, its characteristics, ways to supplement the diet of animals and poultry, as well as modern methods for quantitative determination of L-arginine in food, pharmaceuticals, etc.

In the section «Materials and methods» the characteristic of the developed test technique, parameters of carrying out research, calibration characteristics with application of a standard sample of L-arginine and carrying out tests of amino acid content in a feed additive by means of system of capillary electrophoresis «Kapel-105M» are given. A description of the validation characteristics performed in the process of validation of the method is given.

As a result of the conducted researches the technique of definition of the content of L-arginine in feed additives by means of a method of capillary electrophoresis is developed. The test procedure is based on the dissolution of the feed additive sample, further separation and quantification of the free form of L-arginine, its identification by individual absorption at a wavelength of 200 nm, temperature in the working capillary 30 ºC, voltage 25 kV and conductive electrolyte. The results of validation of this technique by the following characteristics are presented: repeatability, reproducibility, trueness, linearity, limit of quantification, budget uncertainty. The values of trueness, repeatability, reproducibility and uncertainty of the method (with a confidence level of (P) 0.95) does not exceed 5.0 %, the hypothesis of Linearity is acceptable, calculated on the basis of standard deviation (SD) limit of quantification for determining the content of arginine are satisfactory. The results allow us to conclude that the method of capillary electrophoresis using the device «Kapel-105M» is quite accurate and reliable in the case of studies of feed additives L-arginine with a content of the main substance of at least 98,0 %.

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Published
2020-06-01
How to Cite
RyvakН. P., Levytskyy, T. R., Ryvak, R. O., & Chorniy, S. V. (2020). APPLICATION OF CAPILLARY ELECTROPHORESIS METHOD FOR DETERMINATION OF L-ARGININE CONTENT IN FEED ADDITIVE. Scientific and Technical Bulletin оf State Scientific Research Control Institute of Veterinary Medical Products and Fodder Additives аnd Institute of Animal Biology, 21(1), 153-161. https://doi.org/10.36359/scivp.2020-21-1.20