Identification of Honey Authenticity by Terahertz Spectroscopy

Authors

Luelue HUANG, School of Food and Drug , Shenzhen Polytechnic University , Shenzhen 518055 , China
Zhiqi WANG, Shenzhen Institute of Terahertz Technology and Innovation , Shenzhen 518102 , China
Miaoling LIU, School of Food and Drug , Shenzhen Polytechnic University , Shenzhen 518055 , China
Bin LI, School of Food and Drug , Shenzhen Polytechnic University , Shenzhen 518055 , ChinaFollow

Corresponding Author(s)

李彬（1973—），女，博士，研究员，主要从事分析检测研究。E-mail：libin0607@szpu.edu.cn

Abstract

[Objective ] This study aims to identify honey authenticity by terahertz (THz) spectroscopy.[Method ] Different honey samples were analyzed by stable isotope ratio mass spectrometry (IRMS ),and the results served as a reference for terahertz spectroscopy.The sample requirements and analytical conditions of terahertz spectroscopy were verified by comparing the results of these two methods.[Result ] Liquid honey samples exhibited no discernible absorption peaks.However,significant differences in refractive index were observed among samples.The presence of water in liquid honey,particularly at high levels,affected the refractive index,potentially leading to misjudgment.After removal of water from liquid honey via freeze-drying,terahertz attenuated total reflection was employed for identification.The freeze-dried honey samples still showed no discernible absorption peaks but exhibited distinct refractive index variations,being grouped into two categories:one with minor refractive index fluctuations and average values ranging from 2.04 to 2.29,and the other with considerable fluctuations and average values ranging from 1.03 to 2.22.[Conclusion ] Consistent results from both analytical methods demonstrate that terahertz spectroscopy can be employed for authenticity identification of honey samples.

Publication Date

5-15-2025

First Page

72

Last Page

77

DOI

10.12441/spyswjs.20240113002

Recommended Citation

HUANG, Luelue; WANG, Zhiqi; LIU, Miaoling; and LI, Bin (2025) "Identification of Honey Authenticity by Terahertz Spectroscopy," Journal of Food Science and Biotechnology: Vol. 44: Iss. 5, Article 8.
DOI: 10.12441/spyswjs.20240113002
Available at: https://spsw.spyswjs.cnjournals.com/journal/vol44/iss5/8

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