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Zhu Y, Chen L, Guo Y, Gao P, Liu S, Zhang T, Zhang G, Xie K. Quantitative Analysis of Decoquinate Residues in Hen Eggs through Derivatization-Gas Chromatography Tandem Mass Spectrometry. Foods 2023; 13:119. [PMID: 38201147 PMCID: PMC10778401 DOI: 10.3390/foods13010119] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2023] [Revised: 12/19/2023] [Accepted: 12/26/2023] [Indexed: 01/12/2024] Open
Abstract
A novel precolumn derivatization-gas chromatography tandem mass spectrometry (GC-MS/MS) method was developed to detect and confirm the presence of decoquinate residues in eggs (whole egg, albumen and yolk). Liquid-liquid extraction (LLE) and solid phase extraction (SPE) were used to extract and purify samples. The derivatization reagents were pyridine and acetic anhydride, and the derivatives were subjected to GC-MS/MS detection. After the experimental conditions were optimized, satisfactory sensitivity was obtained. The limits of detection (LODs) and limits of quantification (LOQs) for the decoquinate in eggs (whole egg, albumen and yolk) were 1.4-2.4 μg/kg and 2.1-4.9 μg/kg, respectively. At four spiked concentration levels, the average recoveries were 74.3-89.8%, the intraday RSDs ranged from 1.22% to 4.78%, and the inter-day RSDs ranged from 1.61% to 7.54%. The feasibility and practicality of the method were confirmed by testing egg samples from a local supermarket.
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Affiliation(s)
- Yali Zhu
- College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China; (Y.Z.); (Y.G.); (S.L.); (T.Z.); (G.Z.)
- Joint International Research Laboratory of Agriculture & Agri-Product Safety, Yangzhou University, Yangzhou 225009, China; (L.C.); (P.G.)
| | - Lan Chen
- Joint International Research Laboratory of Agriculture & Agri-Product Safety, Yangzhou University, Yangzhou 225009, China; (L.C.); (P.G.)
- College of Veterinary Medicine, Yangzhou University, Yangzhou 225009, China
| | - Yawen Guo
- College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China; (Y.Z.); (Y.G.); (S.L.); (T.Z.); (G.Z.)
- Joint International Research Laboratory of Agriculture & Agri-Product Safety, Yangzhou University, Yangzhou 225009, China; (L.C.); (P.G.)
| | - Pengfei Gao
- Joint International Research Laboratory of Agriculture & Agri-Product Safety, Yangzhou University, Yangzhou 225009, China; (L.C.); (P.G.)
- College of Veterinary Medicine, Yangzhou University, Yangzhou 225009, China
| | - Shuyu Liu
- College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China; (Y.Z.); (Y.G.); (S.L.); (T.Z.); (G.Z.)
- Joint International Research Laboratory of Agriculture & Agri-Product Safety, Yangzhou University, Yangzhou 225009, China; (L.C.); (P.G.)
| | - Tao Zhang
- College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China; (Y.Z.); (Y.G.); (S.L.); (T.Z.); (G.Z.)
- Joint International Research Laboratory of Agriculture & Agri-Product Safety, Yangzhou University, Yangzhou 225009, China; (L.C.); (P.G.)
| | - Genxi Zhang
- College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China; (Y.Z.); (Y.G.); (S.L.); (T.Z.); (G.Z.)
- Joint International Research Laboratory of Agriculture & Agri-Product Safety, Yangzhou University, Yangzhou 225009, China; (L.C.); (P.G.)
| | - Kaizhou Xie
- College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China; (Y.Z.); (Y.G.); (S.L.); (T.Z.); (G.Z.)
- Joint International Research Laboratory of Agriculture & Agri-Product Safety, Yangzhou University, Yangzhou 225009, China; (L.C.); (P.G.)
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2
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Hui L, Qi Z, Hesong H, Lvjiang H, Xiaojuan Z, Chuanxi X, Zhiqiang W, Chenlei Z, Mingliang Q, Yang Z, Yongbing S. Quantification of 3-bromopyruvate in rat plasma by HPLC-MS/MS employing precolumn derivatization and the application to a pharmacokinetics study. Biomed Chromatogr 2022; 36:e5477. [PMID: 35916081 DOI: 10.1002/bmc.5477] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Revised: 07/13/2022] [Accepted: 07/30/2022] [Indexed: 11/10/2022]
Abstract
A simple high-performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS) method has been developed for the determination of 3-Bromopyruvate (3-BrPA) in rat plasma for the first time. The analytes were separated on a C18 column (100×2.1mm, 1.7 μm) and a triple-quadrupole mass spectrometry equipped with an electrospray ionization (ESI) source was applied for detection. 3-BrPA was extracted from rat plasma with protein precipitation, and then derivatized with 4-nitro-1,2-phenylenediamine (NPDA) to obtain the mass signal because 3-BrPA could not be detected in mass spectrometry. The method was fully validated according to the FDA's guidance. The method was linear over the concentration ranges of 0.5-1000.0 ng/mL for 3-BrPA. The precision and accuracy, extraction recovery, and matrix effect were within acceptable limits. The method was then applied to support the pharmacokinetics study after 3-BrPA and 3-BrPA-L-val-L-ile (a dipeptide prodrug of 3-BrPA, 3-BrPA-L-valine-L-isoleucine) had been administered to the Sprague-Dawley rats, respectively.
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Affiliation(s)
- Liu Hui
- Division of Pharmaceutics, Jiangxi University of Traditional Chinese Medicine, Nanchang, China.,Jiangxi Herbfine Science and Technology Limited Liability Company, Nanchang, China
| | - Zhang Qi
- School of Basic Medical Sciences, Jiangxi University of Traditional Chinese Medicine, Nanchang, China
| | - Huang Hesong
- Division of Pharmaceutics, Jiangxi University of Traditional Chinese Medicine, Nanchang, China.,Jiangxi Herbfine Science and Technology Limited Liability Company, Nanchang, China
| | - Hu Lvjiang
- Division of Pharmaceutics, Jiangxi University of Traditional Chinese Medicine, Nanchang, China
| | - Zhao Xiaojuan
- Division of Pharmaceutics, Jiangxi University of Traditional Chinese Medicine, Nanchang, China
| | - Xu Chuanxi
- Division of Pharmaceutics, Jiangxi University of Traditional Chinese Medicine, Nanchang, China.,Jiangxi Herbfine Science and Technology Limited Liability Company, Nanchang, China
| | - Wang Zhiqiang
- Division of Pharmaceutics, Jiangxi University of Traditional Chinese Medicine, Nanchang, China.,Jiangxi Herbfine Science and Technology Limited Liability Company, Nanchang, China
| | - Zhang Chenlei
- Division of Pharmaceutics, Jiangxi University of Traditional Chinese Medicine, Nanchang, China.,Jiangxi Herbfine Science and Technology Limited Liability Company, Nanchang, China
| | - Qiu Mingliang
- Division of Pharmaceutics, Jiangxi University of Traditional Chinese Medicine, Nanchang, China
| | - Zhan Yang
- The Research Center, CR jiangzhong Group, Nanchang, China
| | - Sun Yongbing
- Division of Pharmaceutics, Jiangxi University of Traditional Chinese Medicine, Nanchang, China.,Jiangxi Herbfine Science and Technology Limited Liability Company, Nanchang, China
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Bai J, Wang D, Liu Z, Zhang J, Liu L, Han Y. [Simultaneous determination of amino acid and monoamine neurotransmitters in serum by high performance liquid chromatography coupled with precolumn derivatization]. Se Pu 2020; 38:923-8. [PMID: 34213184 DOI: 10.3724/SP.J.1123.2019.12029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Using o-phthalaldehyde (OPA) as the derivatization reagent, a precolumn derivatized -high performance liquid chromatography (HPLC) method was developed for the simultaneous determination of amino acid neurotransmitters taurine (Tau), glutamic acid (Glu), glycine(Gly), and γ -aminobutyric acid (γ-GABA), as well as the monoamine neurotransmitter dopamine (DA), in serum samples. The samples and ethanol were mixed at a volume ratio of 1:2 (v/v) for protein precipitation. After centrifugation, the supernatant was withdrawn and blown to dryness using nitrogen. The residue was pre-column derivatized with OPA, and the derivatized product was isolated by gradient elution ona Luna 5u C18 column (250 mm×4.6 mm, 5 μm). Under the optimal experimental conditions, the five neurotransmitters showed good linearities (r2 ≥ 0.9866). The limits of detection were between 0.10 and 0.40 μmol/L. The spiked recoveries at different spiked levels were 87.57%-115.31%, and the RSDs were below 7.80%. This method is simple, sensitive, and it can be promised for the simultaneous detection of amino acid and monoamine neurotransmitters.
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Hu J, Cheng H, Xu J, Liu J, Xing L, Shi S, Wang R, Wu Z, Yu N, Peng D. Determination and analysis of monosaccharides in Polygonatum cyrtonema Hua polysaccharides from different areas by ultra-high-performance liquid chromatography quadrupole trap tandem mass spectrometry. J Sep Sci 2021; 44:3506-3515. [PMID: 34268859 PMCID: PMC9292008 DOI: 10.1002/jssc.202100263] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 06/22/2021] [Accepted: 07/14/2021] [Indexed: 01/21/2023]
Abstract
We wanted to explore a new method for the determination of monosaccharides in Polygonatum cyrtonema Hua polysaccharide using the ultra-high-performance liquid chromatography quadrupole trap tandem mass spectrometry. In this study, hydrochloric acid was used instead of trifluoroacetic acid to hydrolyze polysaccharides, and hydrolysis time was greatly reduced from 5-9 h to 1 h. The 1-phenyl-3-methyl-5-pyrazolone was used for pre-column derivatization of monosaccharides. The parameters of linearity (R2 > 0.999), stability (1.63-2.52%), intra-day and inter-day precision (0.69-0.95%, 1.81-2.77%), repeatability (1.89-2.65%), and recovery (97.63-102.24%) of the method were verified. Satisfactory validation results showed this method could be used to determine the target components. The results indicated the polysaccharide contained glucose, mannose, rhamnose, galactose, ribose, and arabinose. Technique for order preference by similarity to an ideal solution and principal component analysis were used to build an evaluation model based on the monosaccharide composition. The evaluation results showed that the samples from the Qingyang County of Anhui Province were the best when the monosaccharides were used as the evaluation index. Therefore, a new method was established to detect the monosaccharide content of polysaccharides from Polygonatum cyrtonema Hua and comprehensively evaluate the quality of Chinese medicines with polysaccharides as the main active ingredient.
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Affiliation(s)
- Jiayi Hu
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, P. R. China.,School of Pharmacy, Anhui Academy of Chinese Medicine, Hefei, P. R. China
| | - He Cheng
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, P. R. China.,School of Pharmacy, Anhui Academy of Chinese Medicine, Hefei, P. R. China
| | - Jun Xu
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, P. R. China.,School of Pharmacy, Anhui Academy of Chinese Medicine, Hefei, P. R. China
| | - Junlin Liu
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, P. R. China.,School of Pharmacy, Anhui Academy of Chinese Medicine, Hefei, P. R. China
| | - Lihua Xing
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, P. R. China.,School of Pharmacy, Anhui Academy of Chinese Medicine, Hefei, P. R. China
| | - Suying Shi
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, P. R. China.,School of Pharmacy, Anhui Academy of Chinese Medicine, Hefei, P. R. China
| | - Rui Wang
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, P. R. China.,School of Pharmacy, Anhui Academy of Chinese Medicine, Hefei, P. R. China
| | - Zhendong Wu
- School of Pharmacy, Anhui Qingyang Jiuhua traditional Chinese Medicine Technology Co., Ltd, Qingyang, P. R. China
| | - Nianjun Yu
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, P. R. China.,School of Pharmacy, Anhui Academy of Chinese Medicine, Hefei, P. R. China
| | - Daiyin Peng
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, P. R. China.,School of Pharmacy, Anhui Academy of Chinese Medicine, Hefei, P. R. China
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5
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Wang Z, Wang Y, Yu T, Hu Z, Wang Y. An LC-ESI/MS/MS method for the determination of lupeol via precolumn derivatization and its application to pharmacokinetic studies in rat plasma. Biomed Chromatogr 2020; 35:e5005. [PMID: 33067801 DOI: 10.1002/bmc.5005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2020] [Revised: 10/04/2020] [Accepted: 10/08/2020] [Indexed: 11/09/2022]
Abstract
Lupeol, a phytosterol and triterpene, is widely found in edible fruits and vegetables, and has been reported to exhibit a spectrum of pharmacological activities against various disease conditions. In the present study, a derivative generated by the reaction of lupeol with p-toluenesulfonyl isocyanate was ionizable and fragmentable in the negative mode by electrospray ionization/tandem mass spectrometry. Based on this simple chemical derivatization, a liquid chromatography-electrospray ionization/tandem mass spectrometry method was developed and validated for the quantification of lupeol in rat plasma. The calibration curves were linear (r2 > 0.999) over concentrations from 2.5 to 250 ng/ml for lupeol. The method had an accuracy of 96.0-109.4%, and the intra- and inter-day precisions (RSD) were within ± 15%. The stability data showed that no significant degradation occurred under the experimental conditions. The mean recoveries at three quality control levels were within 88.7-95.7%. No significant matrix effects (105.3-109.8%) were observed in rat plasma. This method was successfully applied to the pharmacokinetic study of lupeol in rat plasma after oral administration.
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Affiliation(s)
- Ziming Wang
- Key Laboratory of Saline-alkali Vegetation Ecology Restoration in Oil Field, Ministry of Education, Center for Bioactive Products, College of Life Sciences, Northeast Forestry University, Harbin, China
| | - Yu Wang
- School of Life Science and Technology, Harbin Institute of Technology, Harbin, China
| | - Tao Yu
- Key Laboratory of Saline-alkali Vegetation Ecology Restoration in Oil Field, Ministry of Education, Center for Bioactive Products, College of Life Sciences, Northeast Forestry University, Harbin, China
| | - Zhiwei Hu
- Key Laboratory of Saline-alkali Vegetation Ecology Restoration in Oil Field, Ministry of Education, Center for Bioactive Products, College of Life Sciences, Northeast Forestry University, Harbin, China
| | - Yang Wang
- Key Laboratory of Saline-alkali Vegetation Ecology Restoration in Oil Field, Ministry of Education, Center for Bioactive Products, College of Life Sciences, Northeast Forestry University, Harbin, China
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6
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Yang K, Zhou C, Yang Z, Yu L, Cai M, Wu C, Sun P. Establishing a method of HPLC involving precolumn derivatization by 2,2'-dithiobis (5-nitropyridine) to determine the sulfites in shrimps in comparison with ion chromatography. Food Sci Nutr 2019; 7:2151-2158. [PMID: 31289663 PMCID: PMC6593368 DOI: 10.1002/fsn3.1060] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2019] [Revised: 04/13/2019] [Accepted: 04/22/2019] [Indexed: 11/29/2022] Open
Abstract
Although sulfites are widely used in shrimp processing, the contents of residual sulfite need to be strictly controlled due to their potential toxicity. In this paper, a novel method was developed for determination of the free and total sulfites in shrimps. Major procedures of the method includes separation of free and total sulfites with ultrasound-assisted extraction and pH adjustment for 20 min, then a precolumn derivatization was conducted by 2,2'-Dithiobis (5-nitropyridine) and verified by LC-MS, and finally HPLC coupled with an ultraviolet (UV) detector was carried out. Results indicated that the UV absorption wavelength shifted from 213 (sulfites) to 320 nm (new disulfide compounds), significantly reducing the interference of natural occurring compounds and solvents in the matrix. The standard curves exhibited a good linear range of 3.2-51.2 mg/L (R 2 = 0.9996). The limit of detection (LOD) and limit of quantification (LOQ) were 0.3 and 1.0 mg/L, respectively. The contents of free and total sulfite in frozen shrimps were 26.58 ± 0.48 and 31.44 ± 0.83 mg/kg calculated by SO2, respectively. These were similar (p > 0.05) to the data obtained by the method of ion chromatography. In conclusion, the new developed method has been proved to be a reliable and economic method for effective determination of free and total sulfites in the shrimps, and the method could be expanded in determination of the sulfites in other food products.
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Affiliation(s)
- Kai Yang
- Department of Food Science and TechnologyZhejiang University of TechnologyHangzhouChina
- Department of Animal and Food SciencesUniversity of DelawareNewark, Delaware
| | - Cheng Zhou
- Department of Food Science and TechnologyZhejiang University of TechnologyHangzhouChina
| | - Zhenhuan Yang
- Department of Food Science and TechnologyZhejiang University of TechnologyHangzhouChina
| | - Lan Yu
- Zhoushan Yueyang Food Co., LtdZhoushanChina
| | - Ming Cai
- Department of Food Science and TechnologyZhejiang University of TechnologyHangzhouChina
| | - Changqing Wu
- Department of Animal and Food SciencesUniversity of DelawareNewark, Delaware
| | - Peilong Sun
- Department of Food Science and TechnologyZhejiang University of TechnologyHangzhouChina
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7
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Zheng X. [Determination of ethylenethiourea residues in tea using precolumn derivatization with ultra-performance liquid chromatography-tandem mass spectrometry]. Se Pu 2018; 36:1238-44. [PMID: 30574702 DOI: 10.3724/SP.J.1123.2018.08003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
A method based on precolumn derivatization along with ultra-performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS) was developed for the determination of ethylenethiourea residues in tea. The sample was extracted using acetonitrile; the extracting solution was purified by matrix-dispersed solid phase extraction and precolumn derivatization using 9-fluorenylmethyl chloroformate (FMOC-CL). The UPLC separation was carried out on an Acquity BEH C18 column (100 mm×2.1 mm, 1.7 μm) and quantified using the isotope internal standard method. The mobile phase was 0.1% (v/v) formic acid and acetonitrile. For tea samples, the detection limit of this method was 1.3 μg/kg and the limit of quantitation was 4.2 μg/kg. The recoveries were in the range 97.7%-107.5% with relative standard deviation (RSD) of 2.1%-10.0% (n=6). The linear correlation coefficient (r) was 0.9993 over the concentration range 1.0-203.4 μg/L. This method showed high sensitivity, good reproducibility, and qualitative and quantitative accuracy, and could be suitable for the detection of ethylenethiourea residues in tea.
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Duan W, Ji W, Wei Y, Zhao R, Chen Z, Geng Y, Jing F, Wang X. Separation and Purification of Fructo-Oligosaccharide by High-Speed Counter-Current Chromatography Coupled with Precolumn Derivatization. Molecules 2018; 23:molecules23020381. [PMID: 29439422 PMCID: PMC6017542 DOI: 10.3390/molecules23020381] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Revised: 01/30/2018] [Accepted: 02/01/2018] [Indexed: 11/16/2022] Open
Abstract
High-speed counter-current chromatography (HSCCC) coupled with precolumn derivatization was developed for isolating and purifying fructo-oligosaccharides (FOSs). Firstly, the total FOSs were precolumn derivatized and then separated by high-speed counter-current chromatography (HSCCC) with two-phase solvent system petroleum ether–n-butanol–methanol–water (3:2:1:4, v/v). Secondly, the obtained compounds were deacetylated and the fructo-oligosaccharides (FOSs) with high purity were obtained. Their structures were identified by mass spectrometry (MS) and nuclear magnetic resonance (NMR). This research successfully established a novel strategy for separation and purification of FOS. There is no doubt that the application of the research will be beneficial for the quantitative and qualitative analysis of products containing FOSs.
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Affiliation(s)
- Wenjuan Duan
- Qilu University of Technology (Shandong Academy of Sciences), Shandong Analysis and Test Center, Shandong Key Laboratory of TCM Quality Control Technology, 19 Keyuan Street, Jinan 250014, Shandong, China.
| | - Wenhua Ji
- Qilu University of Technology (Shandong Academy of Sciences), Shandong Analysis and Test Center, Shandong Key Laboratory of TCM Quality Control Technology, 19 Keyuan Street, Jinan 250014, Shandong, China.
| | - Yuanan Wei
- Quantum Hi-Tech (China) Biological Co., Ltd., 133 Gaoxin Road West, Hi-tech Zone, Jiangmen 529081, Guangdong, China.
| | - Ruixuan Zhao
- Qilu University of Technology (Shandong Academy of Sciences), Shandong Analysis and Test Center, Shandong Key Laboratory of TCM Quality Control Technology, 19 Keyuan Street, Jinan 250014, Shandong, China.
| | - Zijian Chen
- Quantum Hi-Tech (China) Biological Co., Ltd., 133 Gaoxin Road West, Hi-tech Zone, Jiangmen 529081, Guangdong, China.
| | - Yanling Geng
- Qilu University of Technology (Shandong Academy of Sciences), Shandong Analysis and Test Center, Shandong Key Laboratory of TCM Quality Control Technology, 19 Keyuan Street, Jinan 250014, Shandong, China.
| | - Feng Jing
- Qilu University of Technology (Shandong Academy of Sciences), Shandong Analysis and Test Center, Shandong Key Laboratory of TCM Quality Control Technology, 19 Keyuan Street, Jinan 250014, Shandong, China.
| | - Xiao Wang
- Qilu University of Technology (Shandong Academy of Sciences), Shandong Analysis and Test Center, Shandong Key Laboratory of TCM Quality Control Technology, 19 Keyuan Street, Jinan 250014, Shandong, China.
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9
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Wang JY, Wang XJ, Hui X, Hua SH, Li H, Gao WY. Determination of Diacetyl in Beer by a Precolumn Derivatization-HPLC-UV Method Using 4-(2,3-Dimethyl-6-quinoxalinyl)-1,2-benzenediamine as a Derivatizing Reagent. J Agric Food Chem 2017; 65:2635-2641. [PMID: 28285533 DOI: 10.1021/acs.jafc.7b00990] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Diacetyl is an important flavoring compound in many foods, especially in beer. In the present study, we developed and validated a new precolumn derivatization HPLC-UV method for the determination of diacetyl using 4-(2,3-dimethyl-6-quinoxalinyl)-1,2-benzenediamine as a novel derivatizing reagent. After derivatization with the reagent at a pH value 4.0 at ambient temperature for 10 min, diacetyl was analyzed on an ODS column and detected at 254 nm. The results show that the correlation coefficient of the method is 0.9991 in the range of 0.10 to 100.0 μM diacetyl, and the limit of detection is 0.02 μM. The method was further evaluated in the analysis of beer samples with the recoveries ranging from 94.4 to 102.6% and RSDs from 1.36 to 3.33%. The concentrations of diacetyl in 8 beer samples were determined in the range of 0.19 to 0.42 μM. The method established in this study may be well suitable for the determination of diacetyl in beer.
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Affiliation(s)
- Ji-Yu Wang
- National Engineering Research Center for Miniaturized Detection Systems and College of Life Sciences, Northwest University , 229 North Taibai Road, Xi'an, Shaanxi 710069, China
| | - Xin-Jie Wang
- National Engineering Research Center for Miniaturized Detection Systems and College of Life Sciences, Northwest University , 229 North Taibai Road, Xi'an, Shaanxi 710069, China
| | - Xian Hui
- National Engineering Research Center for Miniaturized Detection Systems and College of Life Sciences, Northwest University , 229 North Taibai Road, Xi'an, Shaanxi 710069, China
| | - Shui-Hong Hua
- National Engineering Research Center for Miniaturized Detection Systems and College of Life Sciences, Northwest University , 229 North Taibai Road, Xi'an, Shaanxi 710069, China
| | - Heng Li
- National Engineering Research Center for Miniaturized Detection Systems and College of Life Sciences, Northwest University , 229 North Taibai Road, Xi'an, Shaanxi 710069, China
| | - Wen-Yun Gao
- National Engineering Research Center for Miniaturized Detection Systems and College of Life Sciences, Northwest University , 229 North Taibai Road, Xi'an, Shaanxi 710069, China
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10
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Narola B, Singh AS, Mitra M, Santhakumar PR, Chandrashekhar TG. A validated reverse phase HPLC method for the determination of disodium EDTA in meropenem drug substance with UV-detection using precolumn derivatization technique. Anal Chem Insights 2011; 6:7-14. [PMID: 21760705 PMCID: PMC3074208 DOI: 10.4137/aci.s5953] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
This paper deals with development and validation of a high performance liquid chromatographic method for the quantitative determination of disodium EDTA (Ethylenediaminetetraacetic acid) in Meropenem active pharmaceutical ingredient (API). EDTA was derivatized with Ferric chloride solution by heating at 70 °C in water bath for about 20 minutes and the chromatographic separation achieved by injecting 100 μL of the derivatized mixture into a Waters HPLC system with photodiode array detector using a Phenomenex Luna C18(2) column (250 × 4.6 mm), 5 μ. The mobile phase consisting of 5% methanol and 95% of 0.7 g/L solution of Tetra butyl ammonium bromide and 4.6 g/L solution of sodium acetate trihydrate in water (pH adjusted to 4.0 with the help of acetic acid glacial) and a flow rate of 1 milliliter/minute. EDTA eluted at approximately 6 minutes. The method was suitably validated with respect to specificity, linearity of response, precision, accuracy, ruggedness, stability in analytical solution, limit of quantitation and detection and robustness for its intended use.
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Affiliation(s)
- Bhavil Narola
- Ranbaxy Research Laboratories, Plot No 20, Sector-18, Udyog Vihar Industrial Complex, Gurgaon-122001, Haryana, India.
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11
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Narola B, Singh AS, Santhakumar PR, Chandrashekhar TG. A Validated Stability-indicating Reverse Phase HPLC Assay Method for the Determination of Memantine Hydrochloride Drug Substance with UV-Detection Using Precolumn Derivatization Technique. Anal Chem Insights 2010; 5:37-45. [PMID: 20703320 PMCID: PMC2918351 DOI: 10.4137/aci.s3936] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
This present paper deals with the development and validation of a stability indicating high performance liquid chromatographic method for the quantitative determination of Memantine hydrochloride. Memantine hydrochloride was derivatized with 0.015 M 9-fluorenylmethyl chloroformate (FMOC) and 0.5 M borate buffer solution by keeping it at room temperature for about 20 minutes and the chromatographic separation achieved by injecting 10 μL of the derivatized mixture into a Waters HPLC system with photodiode array detector using a kromasil C18 column (150 × 4.6 mm), 5 μ. The mobile phase consisting of 80% acetonitrile and 20% phosphate buffer solution and a flow rate of 2 milliliter/minute. The Memantine was eluted at approximately 7.5 minutes. The volume of FMOC used in derivatization, concentration of FMOC and derivatization time was optimized and used. Forced degradation studies were performed on bulk sample of Memantine hydrochloride using acid (5.0 Normal (N) hydrochloric acid), base (1.0 N sodium hydroxide), oxidation (30% hydrogen peroxide), thermal (105°C), photolytic and humidity conditions. The developed LC method was validated with respect to specificity, precision (% RSD about 0.70%), linearity (linearity of range about 70–130 μg/mL), ruggedness (Overall % RSD about 0.35%), stability in analytical solution (Cumulative % RSD about 0.11% after 1450 min.) and robustness.
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Affiliation(s)
- Bhavil Narola
- Ranbaxy Research Laboratories, Plot No. 20, Sector-18, Udyog Vihar Industrial Complex, Gurgaon-122001, Haryana, India
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Kaspar H, Dettmer K, Chan Q, Daniels S, Nimkar S, Daviglus ML, Stamler J, Elliott P, Oefner PJ. Urinary amino acid analysis: a comparison of iTRAQ-LC-MS/MS, GC-MS, and amino acid analyzer. J Chromatogr B Analyt Technol Biomed Life Sci 2009; 877:1838-46. [PMID: 19481989 PMCID: PMC2748257 DOI: 10.1016/j.jchromb.2009.05.019] [Citation(s) in RCA: 132] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2009] [Revised: 04/27/2009] [Accepted: 05/07/2009] [Indexed: 11/20/2022]
Abstract
Urinary amino acid analysis is typically done by cation-exchange chromatography followed by post-column derivatization with ninhydrin and UV detection. This method lacks throughput and specificity. Two recently introduced stable isotope ratio mass spectrometric methods promise to overcome those shortcomings. Using two blinded sets of urine replicates and a certified amino acid standard, we compared the precision and accuracy of gas chromatography/mass spectrometry (GC-MS) and liquid chromatography-tandem mass spectrometry (LC-MS/MS) of propyl chloroformate and iTRAQ derivatized amino acids, respectively, to conventional amino acid analysis. The GC-MS method builds on the direct derivatization of amino acids in diluted urine with propyl chloroformate, GC separation and mass spectrometric quantification of derivatives using stable isotope labeled standards. The LC-MS/MS method requires prior urinary protein precipitation followed by labeling of urinary and standard amino acids with iTRAQ tags containing different cleavable reporter ions distinguishable by MS/MS fragmentation. Means and standard deviations of percent technical error (%TE) computed for 20 amino acids determined by amino acid analyzer, GC-MS, and iTRAQ-LC-MS/MS analyses of 33 duplicate and triplicate urine specimens were 7.27+/-5.22, 21.18+/-10.94, and 18.34+/-14.67, respectively. Corresponding values for 13 amino acids determined in a second batch of 144 urine specimens measured in duplicate or triplicate were 8.39+/-5.35, 6.23+/-3.84, and 35.37+/-29.42. Both GC-MS and iTRAQ-LC-MS/MS are suited for high-throughput amino acid analysis, with the former offering at present higher reproducibility and completely automated sample pretreatment, while the latter covers more amino acids and related amines.
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Affiliation(s)
- Hannelore Kaspar
- Institute of Functional Genomics, University of Regensburg, Josef-Engert-Strasse 9, 93053 Regensburg, Germany
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