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Info. Vol.12 - No.3 (2018.09.20)
Title Rapid Determination of Ethyl Alcohol in Alcoholic Beverages Using a Fluorescent Nanofiber Film
Authors Nguyen Le Thao Nguyen1, Seung Hoon Baek1, Zico Alaia Akbar2, Sung-Yeon Jang2, Siyoung Ha1, Jong Pil Park3,* & Tae Jung Park1,*
Institutions 1Department of Chemistry, Institute of Interdisciplinary Convergence Research, Research Institute of Halal Industrialization Technology, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul 06974, Republic of Korea
2Department of Chemistry, Kookmin University, 77 Jeongneung-ro, Seongbuk-gu, Seoul 02707, Republic of Korea
3Department of Pharmaceutical Engineering, Daegu Haany University, 290 Yugok-dong, Gyeongsan 38610, Republic of Korea
*Correspondence and requests for materials should be addressed to J.P. Park (jppark@dhu.ac.kr) and T.J. Park (tjpark@cau.ac.kr)
Abstract Electrospinning has been recognized as a simple, versatile, and viable technique to fabricate ultrathin nanofibers from various materials, e.g., polymers and composites, in aqueous solutions. In this study, we used polyvinyl alcohol (PVA) as a substrate to synthesize nanofibers by using an electric field between the syringe needle and PVA. The nanofibers demonstrate an immense potential for developing fluorescent detection system of ethyl alcohol from several types of beverages due to their special characteristics of a simple, albeit useful, and effective top-down fabrication process. The development of nanofibers, a fundamental understanding of electrospinning, and properties of the nanofibers, as well as their applications to determine the alcohol content in beverages by direct injection into the fiber surface, were described. This method was accomplished using a PVA nanofiber scaffold as the immobilized sensing film in samples of wine, beer, or some alcohol beverages. Various beverages were tested, which were found to contain low alcohol concentrations. The optical properties of nanofibers in an aqueous PVA solution were observed by fluorescence spectra. The PVA nanofiber films could be useful for detecting the alcohol upto 1.0vol% in a real sample within several seconds. Details of the type of electrospun fibers, and their characteristics were also explained. This study should serve as a guiding tool for nanoscience researchers in fibers, textiles, food validations, and polymer fields.
Keyword Nanofiber film, Polyvinyl alcohol, Fluorometric detection, Alcohol detection
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