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Wang Y, Xi X, Wang L, Chen Y. HPTLC-Bioluminescent Bioautography Screening of Herbal Teas for Adulteration with Hypolipidemic Drugs. BIOSENSORS 2023; 13:392. [PMID: 36979604 PMCID: PMC10046383 DOI: 10.3390/bios13030392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/11/2023] [Revised: 03/09/2023] [Accepted: 03/10/2023] [Indexed: 06/18/2023]
Abstract
Teas based on nutraceutical herbs are an effective tool against hyperlipidemia. However, the adulteration with chemical drugs is frequently detected. By coupling bioluminescent bioautography with high performance thin-layer chromatography (HPTLC), we developed a facile method suitable for screening hypolipidemic drugs (ciprofibrate and bezafibrate) adulteration in five different herbal teas (lotus leaf, Apocynum, Ginkgo biloba, Gynostemia and chrysanthemum). First, the sensitivity of a bioluminescent bacteria to the analyte was evaluated on different HPTLC layer materials, revealing that the best performance was achieved on the silica gel layer. On this basis, sample extracts were separated on silica gel plates via a standardized HPTLC procedure, forming a selective detection window for the targeted compound. Then, the separation results were rapidly visualized by the bioluminescence inhibition of bacteria cells within 6 min after dipping. The observed inhibition displayed an acceptable limit of detection (<20 ng/zone or 2 mg/kg) and linearity (R2 ≥ 0.9279) within a wide concentration range (50-1000 ng/zone). Furthermore, the optimized method was performed with artificially adulterated samples and the recovery rates were determined to be within the range of 71% to 91%, bracing its practical reliability. Showing superiorly high simplicity, throughput and specificity, this work demonstrated that the analytical method jointly based on HPTLC and bioautography was an ideal tool for screening bioactive compounds in complex biological matrix.
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Affiliation(s)
- Yuting Wang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Xingjun Xi
- Sub-Institute of Agricultural Food Standardization, China National Institute of Standardization, Beijing 100191, China
| | - Liao Wang
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Yisheng Chen
- College of Food Science and Engineering, Shanxi Agricultural University, Taigu 030801, China
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Chen Q, Hou H, Zheng D, Xu X, Xi X, Chen Y. HPTLC screening of saccharin in beverages by densitometry quantification and SERS confirmation. RSC Adv 2022; 12:8317-8322. [PMID: 35424832 PMCID: PMC8984960 DOI: 10.1039/d1ra09416e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Accepted: 02/08/2022] [Indexed: 11/30/2022] Open
Abstract
As a widely used artificially synthesized sweetener, saccharin faced numerous disputes associated with food safety. Therefore, its fast analysis in food is of crucial importance. In this study, an analytical method for the fast and reliable screening of saccharin in various beverages was established and validated, by combining HPTLC with densitometry and surface enhanced Raman spectroscopy. The diluted sample liquid was directly sprayed and separated on a silica gel plate using a mixture of ethyl acetate and acetic acid in the ratio of 9 : 1 (v/v) as the mobile phase. The separation realized full isolation of the analyte from background noises. Then, a densitometry analysis in the absorption–reflection mode (working wavelength 230 nm) was optimized to obtain quantitative data, showing a good linearity in the range of 40–200 ng per band (R2 = 0.9988). The limits of detection and quantification were determined to be 6 and 20 ng per band, respectively, which were equal to 6 and 20 mg kg−1. The quantitative results also displayed satisfactory accuracy and precision, with a spike-recovery rate within 87.75–98.14% (RSD <5.13%). As a cost-efficient tool for confirmation, surface enhanced Raman spectroscopy was employed to profile the molecular fingerprint of the analyte eluted from the plate layer. Under optimized conditions (785 nm laser as the excitation light and silver nanoparticle loaded glass fiber paper as the active substrate), the elution of the saccharin band exhibited stable and sensitive surface enhanced Raman spectroscopy signals. This study demonstrated that HPTLC could be a versatile platform for food analysis, with outstanding simplicity and cost-efficiency. As a widely used artificially synthesized sweetener, saccharin faced numerous disputes associated with food safety.![]()
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Affiliation(s)
- Qifei Chen
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
- College of Food Science and Engineering, Shanxi Agricultural University, Taigu, Shanxi 030801, China
| | - Huaming Hou
- College of Food Science and Engineering, Shanxi Agricultural University, Taigu, Shanxi 030801, China
| | - Dan Zheng
- College of Food Science and Engineering, Shanxi Agricultural University, Taigu, Shanxi 030801, China
| | - Xueming Xu
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Xingjun Xi
- Sub-Institute of Agriculture and Food Standardization, China National Institute of Standardization, Beijing 100191, China
| | - Yisheng Chen
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
- College of Food Science and Engineering, Shanxi Agricultural University, Taigu, Shanxi 030801, China
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Jones NS, Comparin JH. Interpol review of controlled substances 2016-2019. Forensic Sci Int Synerg 2020; 2:608-669. [PMID: 33385148 PMCID: PMC7770462 DOI: 10.1016/j.fsisyn.2020.01.019] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Accepted: 01/23/2020] [Indexed: 12/14/2022]
Abstract
This review paper covers the forensic-relevant literature in controlled substances from 2016 to 2019 as a part of the 19th Interpol International Forensic Science Managers Symposium. The review papers are also available at the Interpol website at: https://www.interpol.int/content/download/14458/file/Interpol%20Review%20Papers%202019.pdf.
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Affiliation(s)
- Nicole S. Jones
- RTI International, Applied Justice Research Division, Center for Forensic Sciences, 3040 E. Cornwallis Road, Research Triangle Park, NC, 22709-2194, USA
| | - Jeffrey H. Comparin
- United States Drug Enforcement Administration, Special Testing and Research Laboratory, USA
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A new HPTLC platformed luminescent biosensor system for facile screening of captan residue in fruits. Food Chem 2020; 309:125691. [PMID: 31679853 DOI: 10.1016/j.foodchem.2019.125691] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Revised: 10/07/2019] [Accepted: 10/09/2019] [Indexed: 11/22/2022]
Abstract
This study presented a HPTLC platformed luminescent biosensor system for screening captan residue. First, the potential bio-effects of layers materials on the detectability of a luminescent bacteria Photobacterium phosphoreum (ATCC 11040) as the sensor cell were assessed. From comparison, it was noteworthy that the combination of sensor cells with normal silica gel layer exclusively gave outstanding detectability (<10 ng/zone). On this basis, HPTLC mediated separation and biosensing was further optimized. Then, the obtained graphic results were digitally quantified via software processing, offering satisfactory selectivity, linearity (R2 = 0.9901 within 10-80 ng/zone) and sensitivity (0.5 mg/kg against MRLs ≥ 6 mg/kg). Additionally, the performance of the established method was validated with different fruits (recover rates 75-96%, RSD < 11.8%). Meanwhile, it was demonstrated that detectability of this hybrid system would be tuneable by altering the combination of bacteria strains and layer materials, which was meaningful to strengthen the usability of microbial biosensors.
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Wang P, Chen Y, Xu X, Hellmann B, Huang C, Bai Y, Jin Z. HPTLC Screening of Folic Acid in Food: In Situ Derivatization with Ozone-Induced Fluorescence. FOOD ANAL METHOD 2018. [DOI: 10.1007/s12161-018-1374-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Screening of Phenolic Antioxidants in Edible Oils by HPTLC-DPPH Assay and MS Confirmation. FOOD ANAL METHOD 2018. [DOI: 10.1007/s12161-018-1295-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/29/2022]
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HPTLC-FLD-SERS as a facile and reliable screening tool: Exemplarily shown with tyramine in cheese. J Food Drug Anal 2018; 26:688-695. [PMID: 29567239 PMCID: PMC9322226 DOI: 10.1016/j.jfda.2017.07.007] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Revised: 07/26/2017] [Accepted: 07/30/2017] [Indexed: 12/15/2022] Open
Abstract
The serious cytotoxicity of tyramine attracted marked attention as it induced necrosis of human intestinal cells. This paper presented a novel and facile high performance thin-layer chromatography (HPTLC) method tailored for screening tyramine in cheese. Separation was performed on glass backed silica gel plates, using methanol/ethyl acetate/ ammonia (6/4/1 v/v/v) as the mobile phase. Special efforts were focused on optimizing conditions (substrate preparation, laser wavelength, salt types and concentrations) of surface enhanced Raman spectroscopy (SERS) measurements directly on plates after derivatization, which enabled molecule-specific identification of targeted bands. In parallel, fluorescent densitometry (FLD) scanning at 380</400 nm offered satisfactory quantitative performances (LOD 9 ng/zone, LOQ 17 ng/zone, linearity 0.9996 and %RSD 6.7). Including a quick extraction/cleanup step, the established method was successfully validated with different cheese samples, both qualitatively (straightforward confirmation) and quantitatively (recovery rates from 83.7 to 108.5%). Beyond this application, HPTLC-FLD-SERS provided a new horizon in fast and reliable screening of sophisticated samples like food and herb drugs, striking an excellent balance between specificity, sensitivity and simplicity.
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Móricz ÁM, Ott PG, Häbe TT, Darcsi A, Böszörményi A, Alberti Á, Krüzselyi D, Csontos P, Béni S, Morlock GE. Effect-Directed Discovery of Bioactive Compounds Followed by Highly Targeted Characterization, Isolation and Identification, Exemplarily Shown for Solidago virgaurea. Anal Chem 2016; 88:8202-9. [DOI: 10.1021/acs.analchem.6b02007] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ágnes M. Móricz
- Interdisciplinary
Research Center (IFZ) and Institute of Nutritional Science, Department
of Food Sciences, Justus Liebig University Giessen, Heinrich-Buff-Ring
26-32, 35392 Giessen, Germany
| | | | - Tim T. Häbe
- Interdisciplinary
Research Center (IFZ) and Institute of Nutritional Science, Department
of Food Sciences, Justus Liebig University Giessen, Heinrich-Buff-Ring
26-32, 35392 Giessen, Germany
| | - András Darcsi
- Department
of Pharmacognosy, Faculty of Pharmacy, Semmelweis University, Üllői
Str. 26, 1085 Budapest, Hungary
| | - Andrea Böszörményi
- Department
of Pharmacognosy, Faculty of Pharmacy, Semmelweis University, Üllői
Str. 26, 1085 Budapest, Hungary
| | - Ágnes Alberti
- Department
of Pharmacognosy, Faculty of Pharmacy, Semmelweis University, Üllői
Str. 26, 1085 Budapest, Hungary
| | | | | | - Szabolcs Béni
- Department
of Pharmacognosy, Faculty of Pharmacy, Semmelweis University, Üllői
Str. 26, 1085 Budapest, Hungary
| | - Gertrud E. Morlock
- Interdisciplinary
Research Center (IFZ) and Institute of Nutritional Science, Department
of Food Sciences, Justus Liebig University Giessen, Heinrich-Buff-Ring
26-32, 35392 Giessen, Germany
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