Abstract
A rapid analytical method for simultaneous quantification of glucose (GLC) and seven short-chain fatty acids (SCFA) was developed for detection of ruminal fermentation parameters. The formic acid (FA), lactic acid (LA), acetic acid (AA), propionic acid (PA), butyric acid (BA), isovaleric acid (IVA), valeric acid (VA), and glucose were identified and quantified by high-performance liquid chromatography (HPLC) technique, using a reverse-phase column (C-18) and simultaneous detection in UV-Vis and Refraction Index (RID) detectors, linked in series. The method was validated following the requirements of selectivity, linearity, sensitivity, limit of detection, limit of quantification, accuracy, and precision. The developed method operates in isocratic and gradient modes, providing a better SCFA separation, which allows their determination with a high accuracy and repeatability. Therefore, this study provides a fast, reliable, accurate, straightforward, and efficient alternative method for analysis of ruminal fermentation parameters by liquid chromatography using both detectors simultaneously.
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Acknowledgments
The authors thank the São Paulo Research Foundation (FAPESP) by supporting this work and the São Paulo State University (Unesp), School of Sciences and Engineering, Tupã, for kindly providing all the conditions for the experimental analyses performed in this work.
Funding
This work was entirely supported by the São Paulo Research Foundation (FAPESP) by processes numbers 2016/00446-7 and 2017/10393-0. E. F. V. and J. A. S. thanks São Paulo State University (Unesp) for PROPe grant number 426 (from Edital 06/2019). This study was financed in part by the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - Brasil (CAPES) Finance Code 001 (to R. F. S.).
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J. A. S. declares that she has no conflict of interest. R. F. S. declares that she has no conflict of interest. E. F. V. declares that he has no conflict of interest.
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Serafim, J.A., Silveira, R.F. & Vicente, E.F. Fast Determination of Short-Chain Fatty Acids and Glucose Simultaneously by Ultraviolet/Visible and Refraction Index Detectors via High-Performance Liquid Chromatography. Food Anal. Methods 14, 1387–1393 (2021). https://doi.org/10.1007/s12161-021-01990-w
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DOI: https://doi.org/10.1007/s12161-021-01990-w