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Nakhonchai N, Prompila N, Ponhong K, Siriangkhawut W, Vichapong J, Supharoek SA. Green hairy basil seed mucilage biosorbent for dispersive solid phase extraction enrichment of tetracyclines in bovine milk samples followed by HPLC analysis. Talanta 2024; 271:125645. [PMID: 38219323 DOI: 10.1016/j.talanta.2024.125645] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Revised: 01/02/2024] [Accepted: 01/06/2024] [Indexed: 01/16/2024]
Abstract
Unmodified hairy basil seed mucilage (Ocimum basilicum L.), with attractive features as structural functionality and adsorption capacity, was employed as a green biosorbent for dispersive solid phase extraction and enrichment of oxytetracycline, tetracycline, and doxycycline before quantitation by HPLC-UV for the first time. Hairy basil crushed seed increased the contacting surface area and was completely dispersed in the sample solution to extract tetracyclines under acidic condition with the assistance of ultrasonic waves. The analytes in the extraction phase were separated on a C18 column under isocratic condition with a mobile phase consisted of acetonitrile and trifluoroacetic acid. Influence of chemical and physical variables on the extraction efficiency of the developed method was investigated and optimized systematically. Under the optimal condition of all experimental parameters, good linear ranges were obtained at 15.0-500 μg L-1 for tetracyclines with determination coefficients more than 0.9994. Limits of detection (LODs) and limits of quantitation (LOQs) ranged 5.0-7.0 and 15.0 μg L-1, respectively. Relative standard deviations (RSDs) of the proposed method at 100 and 300 μg L-1 for TCs were less than 13 % and 10 %, respectively with percentage TC recoveries from spiked standard ranging 83.1-109.9 %. This simple, reliable, cost-effective, and environmentally friendly method was successfully applied for the analysis of tetracycline residues in milk. The greenness of the proposed method was assessed using the Analytical Eco-Scale and AGREE protocol.
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Affiliation(s)
- Nongnapas Nakhonchai
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Mahasarakham University, Maha Sarakham, 44150, Thailand
| | - Nattaya Prompila
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Mahasarakham University, Maha Sarakham, 44150, Thailand
| | - Kraingkrai Ponhong
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Mahasarakham University, Maha Sarakham, 44150, Thailand; Multidisciplinary Research Unit of Pure and Applied Chemistry, Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Mahasarakham University, Maha Sarakham, 44150, Thailand
| | - Watsaka Siriangkhawut
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Mahasarakham University, Maha Sarakham, 44150, Thailand
| | - Jitlada Vichapong
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Mahasarakham University, Maha Sarakham, 44150, Thailand; Multidisciplinary Research Unit of Pure and Applied Chemistry, Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Mahasarakham University, Maha Sarakham, 44150, Thailand
| | - Sam-Ang Supharoek
- Department of Medical Science, Amnatcharoen Campus, Mahidol University, Amnat Charoen, 3700, Thailand; Department of Chemistry and Center for Innovation in Chemistry, Faculty of Science, Mahidol University, Bangkok, 10400, Thailand.
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Li Y, Feng K, Li M, Li H, Zhang W, Yang X, Chen Y, Zheng L, Hsieh S, Yan B. A dual-mode ratiometric probe using europium-doped cyclen-functional carbon dots for fluorescent and point-of-care detection of tetracycline. Environ Technol 2024:1-9. [PMID: 38522072 DOI: 10.1080/09593330.2024.2323027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Accepted: 02/18/2024] [Indexed: 03/26/2024]
Abstract
The overuse of tetracycline (TC) has led to the accumulation of antibiotic residues in drinking water and animal products, which can consequently lead to bacteria resistance and chronic disease in humans. Urgently addressing the need for a rapid, user-friendly, and point-of-care test for TC detection. In this work, we use cyclen and citric acid to synthesise carbon dots (CDs) with a unique ring-shaped structure on their surface and combine them with europium (Eu3+) to form an Eu-CDs fluorescent probe. In the presence of TC in aqueous systems, the Eu-CDs probe emits two distinctive fluorescent signals: the stable blue emission from cyclen-modified CDs and the red emission from Eu3+,showing a proportional increase with TC concentration. The developed Eu-CDs probe demonstrates accurate and selective detection capabilities for TC class antibiotics among various interfering factors. The Eu-CDs probe exhibits excellent linearity within the concentration range of 0.04-2.4 µM and achieves an impressive detection limit of 2.7 nM. Moreover, point-of-care Eu-CDs test strips are designed, allowing convenient on-site TC analysis through the detection of a colour change from blue to red under a portable UV light. The results highlight the effectiveness of the proposed dual-mode ratiometric fluorescent Eu-CDs probe and test strips, offering a practical point-of-care testing strategy for real-world TC detection applications.
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Affiliation(s)
- Yuanhua Li
- School of Chemistry and Materials Engineering, Huizhou University, Huizhou, People's Republic of China
- Guangdong Provincial Key Laboratory of Electronic Functional Materials and Devices, Huizhou University, Huizhou, People's Republic of China
| | - Kejun Feng
- School of Chemistry and Materials Engineering, Huizhou University, Huizhou, People's Republic of China
| | - Mingzhu Li
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Material of Guangdong Province, Shantou University, Guangdong, People's Republic of China
| | - Huiling Li
- Key Laboratory for Biobased Materials and Energy of Ministry of Education, College of Materials and Energy, South China Agricultural University, Guangzhou, People's Republic of China
| | - Weiluo Zhang
- School of Chemistry and Materials Engineering, Huizhou University, Huizhou, People's Republic of China
| | - Xiaofang Yang
- School of Chemistry and Materials Engineering, Huizhou University, Huizhou, People's Republic of China
| | - Yuan Chen
- School of Chemistry and Materials Engineering, Huizhou University, Huizhou, People's Republic of China
| | - Lei Zheng
- School of Chemistry and Materials Engineering, Huizhou University, Huizhou, People's Republic of China
| | - ShihHuan Hsieh
- School of Chemistry and Materials Engineering, Huizhou University, Huizhou, People's Republic of China
| | - Binghua Yan
- College of Resources and Environment, Hunan Agricultural University, Changsha, People's Republic of China
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