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A high-performance liquid chromatography–evaporative light scattering detection–based quantitative analytical method for polyvinyl alcohol in food supplements with pyrolysis–gas chromatography/mass spectrometry-based verification

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Abstract

Polyvinyl alcohol (PVOH) is extensively used in agricultural, pharmaceutical, textile, and food industries. A new high-performance liquid chromatography (HPLC) method with evaporative light scattering detection (ELSD) was developed for the quantitative analysis of PVOH products. Pyrolysis–gas chromatography/mass spectrometry (Py–GC/MS) was employed for method verification. The HPLC–ELSD method exhibited acceptable linearity (R2 > 0.99), with limits of detection and quantitation of 19.43 and 58.88 μg/mL, respectively. Accuracies of 91.16–102.30% were estimated based on recoveries of the intra- and inter-day tests of PVOH. Repeatability and intermediate precision (%RSD) of 1.23–4.45 and 2.18–6.95, respectively, were obtained. The presence of PVOH in the HPLC peaks was further verified using typical indicators of PVOH in Py–GC/MS analysis, such as acetaldehyde, 2,5-dihydrofuran, benzaldehyde, and crotonaldehyde. This novel HPLC method with Py–GC/MS-based verification can be successfully applied for analyzing PVOH in dietary supplement tablets.

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Acknowledgements

This research was supported by a Grant (18162MFDS009) from the Ministry of Food and Drug Safety in 2018. This research was also supported by the Chung-Ang University Graduate Research Scholarship (Academic scholarship for College of Biotechnology and Natural Resources) in 2021.

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Correspondence to Chan Lee.

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Park, J., Lee, J., Kim, YM. et al. A high-performance liquid chromatography–evaporative light scattering detection–based quantitative analytical method for polyvinyl alcohol in food supplements with pyrolysis–gas chromatography/mass spectrometry-based verification. Food Sci Biotechnol 31, 797–805 (2022). https://doi.org/10.1007/s10068-022-01102-2

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