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基于太赫兹光谱和超材料技术的奶牛典型生殖激素的定性和定量检测。

Qualitative and Quantitative Detection of Typical Reproductive Hormones in Dairy Cows Based on Terahertz Spectroscopy and Metamaterial Technology.

机构信息

Intelligent Equipment Research Center, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China.

College of Agricultural Engineering, Shanxi Agricultural University, Taigu 030801, China.

出版信息

Molecules. 2024 May 17;29(10):2366. doi: 10.3390/molecules29102366.

DOI:10.3390/molecules29102366
PMID:38792227
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11123911/
Abstract

Progesterone (PROG) and estrone (E) are typical reproductive hormones in dairy cows. Assessing the levels of these hormones in vivo can aid in estrus identification. In the present work, the feasibility of the qualitative and quantitative detection of PROG and E using terahertz time-domain spectroscopy (THz-TDS) and metamaterial technology was preliminarily investigated. First, the time domain spectra, frequency domain spectra, and absorption coefficients of PROG and E samples were collected and analyzed. A vibration analysis was conducted using density functional theory (DFT). Subsequently, a double-ring (DR) metamaterial structure was designed and simulated using the frequency domain solution algorithm in CST Studio Suite (CST) software. This aimed to ensure that the double resonance peaks of DR were similar to the absorption peaks of PROG and E. Finally, the response of DR to different concentrations of PROG/E was analyzed and quantitatively modeled. The results show that a qualitative analysis can be conducted by comparing the corresponding DR resonance peak changes in PROG and E samples at various concentrations. The best R for the PROG quantitative model was 0.9872, while for E, it was 0.9828. This indicates that terahertz spectral-metamaterial technology for the qualitative and quantitative detection of the typical reproductive hormones PROG and E in dairy cows is feasible and worthy of in-depth exploration. This study provides a reference for the identification of dairy cow estrus.

摘要

孕激素（PROG）和雌酮（E）是奶牛的典型生殖激素。评估这些激素在体内的水平可以帮助鉴定发情。本工作初步探讨了太赫兹时域光谱（THz-TDS）和超材料技术定性和定量检测 PROG 和 E 的可行性。首先，采集并分析了 PROG 和 E 样品的时域谱、频域谱和吸收系数。利用密度泛函理论（DFT）进行了振动分析。随后，使用 CST Studio Suite（CST）软件中的频域求解算法设计并模拟了双环（DR）超材料结构，以确保 DR 的双共振峰与 PROG 和 E 的吸收峰相似。最后，分析并定量建模了 DR 对不同浓度 PROG/E 的响应。结果表明，通过比较不同浓度下 PROG 和 E 样品的相应 DR 共振峰变化，可以进行定性分析。PROG 定量模型的最佳 R 为 0.9872，E 为 0.9828。这表明太赫兹光谱-超材料技术用于定性和定量检测奶牛典型生殖激素 PROG 和 E 是可行的，值得深入探讨。本研究为奶牛发情鉴定提供了参考。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/879e/11123911/12b749b22d2b/molecules-29-02366-g012.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/879e/11123911/30bfa99c73fb/molecules-29-02366-g001.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/879e/11123911/7ee8d156526d/molecules-29-02366-g004.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/879e/11123911/67191fe019cd/molecules-29-02366-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/879e/11123911/a7edfc3dabd9/molecules-29-02366-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/879e/11123911/9f46eb9f0dea/molecules-29-02366-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/879e/11123911/05483a6f9801/molecules-29-02366-g009.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/879e/11123911/12b749b22d2b/molecules-29-02366-g012.jpg

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