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Sun D, Liu Y, Jin Z, Xu B, Jin Y, Zhao Q, He Y, Li J, Zhang Y, Cui Y. Preparation of limonin monoclonal antibody and establishment of a sensitive icELISA for analyzing limonin in citrus and herbal samples. Food Chem 2024; 447:138989. [PMID: 38492297 DOI: 10.1016/j.foodchem.2024.138989] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Revised: 02/26/2024] [Accepted: 03/08/2024] [Indexed: 03/18/2024]
Abstract
Limonin is an intensely bitter and highly oxidized tetracyclic triterpenoid secondary metabolite, which is abundant in the Rutaceae and Meliaceae, especially in Citrus. In order to detect limonin content in complex substrates such as citrus and traditional Chinese medicine, monoclonal antibodies specifically recognizing limonin were prepared and an indirect competitive enzyme-linked immunosorbent assay (icELISA) was established. The median inhibition concentration (IC50) was 5.40 ng/mL and the linear range was 1.25-23.84 ng/mL. The average recoveries from citrus peel and pulp samples were 95.9%-118.8% and 77.5%-113.1%, respectively. Moreover, the contents of limonin in 6 citrus samples and 4 herbal samples were analyzed by icELISA and UPLC-MS, and the results of the two methods were consistent. This validation is sufficient to demonstrate that the developed immunoassay is applicable for the detection of limonin in citrus and herbal samples and has the advantage of high efficiency, sensitivity, and convenience.
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Affiliation(s)
- Di Sun
- Key Laboratory of Quality and Safety Control of Citrus Fruits, Ministry of Agriculture and Rural Affairs, Southwest University, Chongqing 400712, China; National Citrus Engineering Research Center, Chongqing 400712, PR China; Laboratory of Quality & Safety Risk Assessment for Citrus Products (Chongqing), Ministry of Agriculture, Citrus Research Institute, Southwest University, Chongqing 400712, China
| | - Yifan Liu
- Key Laboratory of Quality and Safety Control of Citrus Fruits, Ministry of Agriculture and Rural Affairs, Southwest University, Chongqing 400712, China; National Citrus Engineering Research Center, Chongqing 400712, PR China; Laboratory of Quality & Safety Risk Assessment for Citrus Products (Chongqing), Ministry of Agriculture, Citrus Research Institute, Southwest University, Chongqing 400712, China
| | - Zihui Jin
- Key Laboratory of Quality and Safety Control of Citrus Fruits, Ministry of Agriculture and Rural Affairs, Southwest University, Chongqing 400712, China; National Citrus Engineering Research Center, Chongqing 400712, PR China; Laboratory of Quality & Safety Risk Assessment for Citrus Products (Chongqing), Ministry of Agriculture, Citrus Research Institute, Southwest University, Chongqing 400712, China
| | - Bo Xu
- Key Laboratory of Quality and Safety Control of Citrus Fruits, Ministry of Agriculture and Rural Affairs, Southwest University, Chongqing 400712, China; National Citrus Engineering Research Center, Chongqing 400712, PR China; Laboratory of Quality & Safety Risk Assessment for Citrus Products (Chongqing), Ministry of Agriculture, Citrus Research Institute, Southwest University, Chongqing 400712, China
| | - Yaqi Jin
- Key Laboratory of Quality and Safety Control of Citrus Fruits, Ministry of Agriculture and Rural Affairs, Southwest University, Chongqing 400712, China; National Citrus Engineering Research Center, Chongqing 400712, PR China; Laboratory of Quality & Safety Risk Assessment for Citrus Products (Chongqing), Ministry of Agriculture, Citrus Research Institute, Southwest University, Chongqing 400712, China
| | - Qiyang Zhao
- Key Laboratory of Quality and Safety Control of Citrus Fruits, Ministry of Agriculture and Rural Affairs, Southwest University, Chongqing 400712, China; National Citrus Engineering Research Center, Chongqing 400712, PR China; Laboratory of Quality & Safety Risk Assessment for Citrus Products (Chongqing), Ministry of Agriculture, Citrus Research Institute, Southwest University, Chongqing 400712, China
| | - Yue He
- Key Laboratory of Quality and Safety Control of Citrus Fruits, Ministry of Agriculture and Rural Affairs, Southwest University, Chongqing 400712, China; National Citrus Engineering Research Center, Chongqing 400712, PR China; Laboratory of Quality & Safety Risk Assessment for Citrus Products (Chongqing), Ministry of Agriculture, Citrus Research Institute, Southwest University, Chongqing 400712, China
| | - Jing Li
- Key Laboratory of Quality and Safety Control of Citrus Fruits, Ministry of Agriculture and Rural Affairs, Southwest University, Chongqing 400712, China; National Citrus Engineering Research Center, Chongqing 400712, PR China; Laboratory of Quality & Safety Risk Assessment for Citrus Products (Chongqing), Ministry of Agriculture, Citrus Research Institute, Southwest University, Chongqing 400712, China
| | - Yaohai Zhang
- Key Laboratory of Quality and Safety Control of Citrus Fruits, Ministry of Agriculture and Rural Affairs, Southwest University, Chongqing 400712, China; National Citrus Engineering Research Center, Chongqing 400712, PR China; Laboratory of Quality & Safety Risk Assessment for Citrus Products (Chongqing), Ministry of Agriculture, Citrus Research Institute, Southwest University, Chongqing 400712, China
| | - Yongliang Cui
- Key Laboratory of Quality and Safety Control of Citrus Fruits, Ministry of Agriculture and Rural Affairs, Southwest University, Chongqing 400712, China; National Citrus Engineering Research Center, Chongqing 400712, PR China; Laboratory of Quality & Safety Risk Assessment for Citrus Products (Chongqing), Ministry of Agriculture, Citrus Research Institute, Southwest University, Chongqing 400712, China.
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Sorout M, Bhogal S. Current trends of functional monomers and cross linkers used to produce molecularly imprinted polymers for food analysis. Crit Rev Food Sci Nutr 2024:1-21. [PMID: 38907585 DOI: 10.1080/10408398.2024.2365337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/24/2024]
Abstract
Molecularly imprinted polymers (MIPs) as artificial synthetic receptors are in high demand for food analysis due to their inherent molecular recognition abilities. It is common practice to employ functional monomers with basic or acidic groups that can interact with analyte molecules via hydrogen bonds, covalent bonds, and other interactions (π-π, dipole-ion, hydrophobic, and Van der Waals). Therefore, selecting the appropriate functional monomer and cross-linker is crucial for determining how precisely they interact with the template and developing the polymeric network's three-dimensional structure. This study summarizes the advancements made in MIP's functional monomers and cross-linkers for food analysis from 2018 to 2023. The subsequent computational design of MIP has been thoroughly explained. The discussion has concluded with a look at the difficulties and prospects for MIP in food analysis.
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Affiliation(s)
- Mohit Sorout
- Department of Chemistry, Chandigarh University, Mohali, India
| | - Shikha Bhogal
- Department of Chemistry, Chandigarh University, Mohali, India
- University Centre for Research and Development, Chandigarh University, Mohali, India
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Chen X, Sheng Y, Che J, Reymick OO, Tao N. Integration of covalent organic frameworks and molecularly imprinted polymers for selective extraction of flavonoid naringenin from grapefruit ( Citrus × paradisi Macf.) peels. Food Chem X 2024; 21:101107. [PMID: 38292684 PMCID: PMC10825234 DOI: 10.1016/j.fochx.2023.101107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Revised: 12/07/2023] [Accepted: 12/28/2023] [Indexed: 02/01/2024] Open
Abstract
Grapefruit (Citrus × paradisi Macf.) peel, a by-product of the citrus-processing industry, possesses an important economic value due to the richness of bioactive compounds. In this study, boron-linked covalent organic frameworks integrated with molecularly imprinted polymers (CMIPs) were developed via a facile one-pot bulk polymerization approach for the selective extraction of naringenin from grapefruit peel extract. The obtained CMIPs possessed a three-dimensional network structure with uniform pore size distribution, large surface areas (476 m2/g), and high crystallinity. Benefiting from the hybrid functional monomer APTES-MAA, the acylamino group can coordinate with the boronate ligands of the boroxine-based framework to form B-N bands, facilitating the integration of imprinted cavities with the aromatic skeleton. The composite materials exhibited a high adsorption capacity of 153.65 mg/g, and a short adsorption equilibrium time of 30 min for naringenin, together with favorable selectivity towards other flavonoid analogues. Additionally, the CMIPs captured the template molecules through π-π* interaction and hydrogen bonding, as verified by FT-IR and XPS. Furthermore, they had good performance when employed to enrich naringenin in grapefruit peels extract compared with the common adsorbent materials including AB-8, D101, cationic exchange resin, and active carbon. This research highlights the potential of CMIPs composite materials as a promising alternative adsorbent for naringenin extraction from grapefruit peel.
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Affiliation(s)
- Xiumei Chen
- School of Chemical Engineering, Xiangtan University, Xiangtan 411105, PR China
| | - Yingying Sheng
- School of Chemical Engineering, Xiangtan University, Xiangtan 411105, PR China
| | - Jinxin Che
- School of Chemical Engineering, Xiangtan University, Xiangtan 411105, PR China
| | | | - Nengguo Tao
- School of Chemical Engineering, Xiangtan University, Xiangtan 411105, PR China
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Chen Y, Yang D, Ouyang N, Lei S, Liu H, Huang Y, Wu J. Optimization of limonin invertase production by scaling up Aspergillus tubingensis UA13 fermentation to a 5-l scale. Lett Appl Microbiol 2023; 76:ovad133. [PMID: 38037435 DOI: 10.1093/lambio/ovad133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Revised: 11/13/2023] [Accepted: 11/29/2023] [Indexed: 12/02/2023]
Abstract
The enzymatic approach is a highly effective and the major scientific method to eliminating bitter components in citrus-derived products nowadays. Microbial production of limonin invertase stands out due to its pivotal role in the removal of the bitter substance, limonin. The optimization of fermentation parameters and the study of scale-up fermentation are imperative for product commercialization. In this study, we focused on optimizing stirring speed, fermentation temperature, and initial pH to enhance the growth and limonin invertase production by the Aspergillus tabin strain UA13 in a 5-l stirred-tank bioreactor. Our results revealed the following optimal parameters are: a stirring speed of 300 rpm, a fermentation temperature of 35°C and a pH 5.0. Under these optimized conditions, the limonin invertase activity reached its peak at 63.38 U ml-1, representing a 1.67-fold increase compared to the unoptimized conditions (38.10 U ml-1), while also reducing the fermentation duration by 12 h. Furthermore, our research demonstrated that limonin invertase effectively hydrolyze limonin in grapefruit juice, reducing its content from 13.28 to 2.14 μg ml-1, as determined by HPLC, resulting in a 6.21-fold reduction of the bitter substance.
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Affiliation(s)
- Yuting Chen
- College of Biological and Pharmaceutical, China Three Gorges University, Yichang 443002, China
| | - Dandan Yang
- College of Biological and Pharmaceutical, China Three Gorges University, Yichang 443002, China
| | - Nongfei Ouyang
- College of Biological and Pharmaceutical, China Three Gorges University, Yichang 443002, China
| | - Shengjiao Lei
- College of Biological and Pharmaceutical, China Three Gorges University, Yichang 443002, China
- Hubei Key Laboratory of Natural Products Research and Development, China Three Gorges University, Yichang 443002, China
| | - Haiyan Liu
- College of Biological and Pharmaceutical, China Three Gorges University, Yichang 443002, China
| | - Yiwei Huang
- College of Biological and Pharmaceutical, China Three Gorges University, Yichang 443002, China
| | - Junqian Wu
- College of Biological and Pharmaceutical, China Three Gorges University, Yichang 443002, China
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Cheng Y, Liu H, Kuang L, Yan Z, Li H, Xu G. Preparation and evaluation of molecularly imprinted polymers based on magnetic graphene oxide for selective extraction and determination of quercetin in red wine. Microchem J 2023. [DOI: 10.1016/j.microc.2023.108716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/09/2023]
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Selective Adsorption of Quercetin by the Sol-Gel Surface Molecularly Imprinted Polymer. Polymers (Basel) 2023; 15:polym15040905. [PMID: 36850189 PMCID: PMC9962813 DOI: 10.3390/polym15040905] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2023] [Revised: 02/06/2023] [Accepted: 02/09/2023] [Indexed: 02/16/2023] Open
Abstract
Quercetin, as one of the most biologically active natural flavonoids, is widely found in various vegetables, fruits and Chinese herbs. In this work, molecularly imprinted polymer (MIP) was synthesized through surface molecular imprinting technology with sol-gel polymerization mechanism on SiO2 at room temperature using quercetin as the template, SiO2 as the supporter, 3-aminopropyltriethoxysilane (APTES) as the functional monomer, and tetraethoxysilane (TEOS) as the cross-linker. The prepared MIP was characterized via scanning electron microscope (SEM), Fourier transform infrared spectroscopy (FT-IR) and nitrogen adsorption measurements to validate its surface morphology, structure and functionality. SEM images revealed that the morphology of MIP was rough and spherical with the particle size of 260 nm larger than that of the support SiO2. In the FTIR spectra of MIP, the band around 1499 cm-1 and 2932 cm-1 were assigned to N-H and C-H groups, respectively. The results indicated that the imprinted polymer layers were grafted on the surface of SiO2 and the MIP had been successfully prepared. Since the specific surface area and pore volume of MIP were markedly higher than those of NIP and SiO2 and were 52.10 m2 g-1 and 0.150 cm3 g-1, respectively, it was evident that the imprinting process created corresponding imprinted cavities and porosity. The MIP for adsorbing quercetin was evaluated by static adsorption experiment. The results indicated that the adsorption equilibrium could be reached within 90 min and the maximum adsorption capacity was as high as 35.70 mg/g. The mechanism for adsorption kinetics and isotherm of MIP for quercetin was proved to conform the pseudo-second-order kinetics model (R2 = 0.9930) and the Freundlich isotherm model (R2 = 0.9999), respectively, revealing that chemical adsorption and heterogeneous surface with multilayer adsorption dominated. In contrast to non-imprinted polymer (NIP), the MIP demonstrated high selectivity and specific recognition towards quercetin whose selectivity coefficients for quercetin relative to biochanin A were 1.61. Furthermore, the adsorption capacity of MIP can be maintaining above 90% after five regeneration cycles, indicating brilliant reusability and potential application for selective adsorption of quercetin.
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Efficient and selective extraction of chlorogenic acid in juice samples using magnetic molecularly imprinted polymers. Microchem J 2022. [DOI: 10.1016/j.microc.2022.108110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Zhou H, Chen Q, Song X, He L, Liu R. Surface molecularly imprinted solid-phase extraction for the determination of vancomycin in plasma samples using HPLC-MS/MS. ANAL SCI 2022; 38:1171-1179. [PMID: 35841522 DOI: 10.1007/s44211-022-00143-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2022] [Accepted: 05/30/2022] [Indexed: 11/29/2022]
Abstract
Vancomycin is a glycopeptide antibiotic used to treat infections caused by Gram-positive bacteria. Due to the narrow therapeutic index of vancomycin, it is necessary to develop a sensitive and reliable analytical method to monitor the drug concentration in plasma. A novel method based on surface molecularly imprinted solid-phase extraction combined with liquid chromatography-tandem mass spectrometry for the determination of vancomycin in plasma sample was developed. The plasma sample was cleaned up through the solid-phase extraction process before the analysis. The calibration standard of vancomycin in plasma ranged between 1 and 100 ng/mL, and the correlation coefficient (r) was 0.9993. The average recoveries were from 94.3 to 104.0%, and the precision was less than 10.5%. The limit of detection and limit of quantification were 0.5 ng/mL and 1 ng/mL, respectively. The method validated was successfully used for the detection of vancomycin in mice after oral administration.
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Affiliation(s)
- Hao Zhou
- National Reference Laboratory of Veterinary Drug Residues (SCAU), College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, China.,Pearl River Fisheries Research Institute, Chinese Academic of Fishery Science, Guangzhou, 510380, China
| | - Qianqian Chen
- National Reference Laboratory of Veterinary Drug Residues (SCAU), College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, China
| | - Xuqin Song
- College of Animal Science, Guizhou University, Guiyang, 550025, China
| | - Limin He
- National Reference Laboratory of Veterinary Drug Residues (SCAU), College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, China
| | - Rong Liu
- National Reference Laboratory of Veterinary Drug Residues (SCAU), College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, China.
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Das S, Sahu PP. A novel electrochemical interdigitated electrodes sensor for limonin quantification and reduction in citrus limetta juice. Food Chem 2022; 381:132248. [PMID: 35123220 DOI: 10.1016/j.foodchem.2022.132248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2021] [Revised: 01/04/2022] [Accepted: 01/23/2022] [Indexed: 11/30/2022]
Abstract
Limonin, a highly oxygenated triterpene biomolecule of citrus fruits is responsible for delayed bitterness of its juice lowering consumer's acceptability. Hence, limonin detection is essential for appropriate debittering intrusions. A novel interdigitated capacitive sensor using magnesium silicate-poly vinyl alcohol (MgSiO3.xH2O-PVA) composite has been introduced for quantification of limonin and debittering through selective adsorption of limonin from the citrus limetta juice. The sensor showed high sensitivity of 2.392 µF/ppm and fast response time of ∼6s. The sensor enables both quantification as well as measure debittering of citrus juice showing a reduction in limonin content from 5.77 ppm to 4.29 ppm with an exposure time of 60s to the sensing material making it distinctive in comparison to other methods. The sensor's results were validated with HPLC analysis. The device is simple, low-cost and reusable which promises easy, on-site and rapid quantification and reduction of limonin content in citrus juices without having toxicity.
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Affiliation(s)
- Satyajit Das
- Department of Electronics and Communication Engineering, Tezpur University, Tezpur, Assam 784028, India.
| | - Partha Pratim Sahu
- Department of Electronics and Communication Engineering, Tezpur University, Tezpur, Assam 784028, India
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Changes in Organic Acids, Phenolic Compounds, and Antioxidant Activities of Lemon Juice Fermented by Issatchenkia terricola. Molecules 2021; 26:molecules26216712. [PMID: 34771119 PMCID: PMC8588450 DOI: 10.3390/molecules26216712] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Revised: 10/31/2021] [Accepted: 11/03/2021] [Indexed: 11/16/2022] Open
Abstract
High content of citric acid in lemon juice leads to poor sensory experience. The study aimed to investigate the dynamics changes in organic acids, phenolic compounds, and antioxidant activities of lemon juice fermented with Issatchenkia terricola WJL-G4. The sensory evaluation of fermented lemon juice was conducted as well. Issatchenkia terricola WJL-G4 exhibited a potent capability of reducing the contents of citric acid (from 51.46 ± 0.11 g/L to 8.09 ± 0.05 g/L within 60 h fermentation) and increasing total phenolic level, flavonoid contents, and antioxidant activities compared to those of unfermented lemon juice. A total of 20 bioactive substances, including 10 phenolic acids and 10 flavonoid compounds, were detected both in fermented and unfermented lemon juice. The lemon juice fermented for 48 h had better sensory characteristics. Our findings demonstrated that lemon juice fermented with Issatchenkia terricola exhibited reduced citric acid contents, increased levels of health-promoting phenolic compounds, and enhanced antioxidant activities.
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Narayanan M, Baskaran D, Sampath V. Experimental design of hydrotropic extraction for recovery of bioactive limonin from lemon (Citrus limon L.) seeds. SEP SCI TECHNOL 2021. [DOI: 10.1080/01496395.2021.1943683] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Meyyappan Narayanan
- Department of Chemical Engineering, Sri Venkateswara College of Engineering, Chennai, India
| | - Divya Baskaran
- Department of Chemical Engineering, Sri Venkateswara College of Engineering, Chennai, India
| | - Vasumathi Sampath
- Department of Chemical Engineering, Sri Venkateswara College of Engineering, Chennai, India
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Wang J, Zhai Y, Ou M, Bian Y, Tang C, Zhang W, Cheng Y, Li G. Protective Effect of Lemon Peel Extract on Oxidative Stress in H9c2 Rat Heart Cell Injury. DRUG DESIGN DEVELOPMENT AND THERAPY 2021; 15:2047-2058. [PMID: 34017169 PMCID: PMC8131012 DOI: 10.2147/dddt.s304624] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Accepted: 04/21/2021] [Indexed: 01/27/2023]
Abstract
Aim Lemon peel, a traditional Chinese medicine, was tested in this study for its novel application in inhibiting cellular oxidative stress, and the effect of lemon peel extract (LPE) on protecting H9c2 rat heart cells from oxidative stress was investigated. Methods The scavenging effects of LPE on 1,1-diphenyl-2-picryhydrazyl (DPPH) and 2,2’-azino-bis (3-ethylbenzthiazoline-6-sulfonic acid) (ABTS) free radicals were measured in extracellular experiments. The 3-(4,5-dimethyl-2-thiazolinyl)-2,5-diphenyl-2-h-tetrazolylammonium bromide (MTT) assay was used to detect the cell survival rate. The cell supernatant and intracellular oxidation-related indicators were detected by a kit, and the mRNA expression in H9c2 cells was detected by quantitative polymerase chain reaction (qPCR). The chemical substances of LPE were analyzed by high-performance liquid chromatography (HPLC). Results The results showed that LPE exhibited better DPPH and ABTS free radical scavenging abilities than vitamin C. Compared with the cells in the normal state (control group), the cell survival rate in the model group decreased, and the level of lactate dehydrogenase (LDH) increased, the levels of superoxide dismutase (SOD), catalase (CAT), and glutathione (GSH) decreased, and the content of malondialdehyde (MDA) increased. Compared with the control group, the expression of Bcl-2-related X protein (Bax), caspase-3, nuclear factor erythroid 2-related factor 2 (Nrf2), and heme oxygenase-1 (HO-1) in the model group was increased, and the expression of B-cell lymphoma-2 (Bcl-2) was reduced. Compared with the model group, LPE treatment improved the cell survival rate, reduced the levels of LDH and MDA, increased the levels of SOD, CAT, and GSH, downregulated the expression of Bax, caspase-3, Nrf2 and HO-1, and upregulated the expression of Bcl-2. The composition analysis showed that LPE contained catechin, rutin, naringin, quercetin, and hesperidin. Conclusion The results indicated that LPE could protect H9c2 cells from oxidative stress through five active components. LPE has the potential to be developed into natural medicine or health food for the inhibition of cell oxidative damage.
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Affiliation(s)
- Jun Wang
- Citrus Research Institute, Southwest University, Chongqing, People's Republic of China.,National Citrus Engineering Research Center, Chongqing, People's Republic of China
| | - Yulin Zhai
- Citrus Research Institute, Southwest University, Chongqing, People's Republic of China
| | - Mingguang Ou
- Guang'an Nongfeng Agricultural Development Co., Ltd, Sichuan, People's Republic of China
| | - Yunfeng Bian
- Guang'an Zheng Wang Agriculture Co., Ltd, Sichuan, People's Republic of China
| | - Chenglong Tang
- Yuanyang Hongtu Grapefruit Agricultural Technology Development Co., Ltd, Yunnan, People's Republic of China
| | - Wanchao Zhang
- Chongqing Institute of Medicinal Plant Cultivation, Chongqing, People's Republic of China.,National Patent Navigation Project (Chongqing) Research and Promotion Center, Chongqing, People's Republic of China.,Bio-Resource Research and Utilization Joint Key Laboratory of Sichuan and Chongqing, Chongqing, People's Republic of China
| | - Yujiao Cheng
- Citrus Research Institute, Southwest University, Chongqing, People's Republic of China.,National Citrus Engineering Research Center, Chongqing, People's Republic of China
| | - Guijie Li
- Citrus Research Institute, Southwest University, Chongqing, People's Republic of China.,National Citrus Engineering Research Center, Chongqing, People's Republic of China
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Tan L, Li QY, Li YJ, Ma RR, He JY, Jiang ZF, Yang LL, Wang CZ, Luo L, Zhang QH, Yuan CS. Specific adsorption and determination of aspartame in soft drinks with a zein magnetic molecularly imprinted modified MGCE sensor. RSC Adv 2021; 11:13486-13496. [PMID: 35423884 PMCID: PMC8697574 DOI: 10.1039/d0ra10824c] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2020] [Accepted: 03/31/2021] [Indexed: 11/21/2022] Open
Abstract
Schematic representation of the synthesis procedure of ZDM-MIPs.
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Song C, Chen J, Li X, Yang R, Cao X, Zhou L, Zhou Y, Ying H, Zhang Q, Sun Y. Limonin ameliorates dextran sulfate sodium-induced chronic colitis in mice by inhibiting PERK-ATF4-CHOP pathway of ER stress and NF-κB signaling. Int Immunopharmacol 2020; 90:107161. [PMID: 33168409 DOI: 10.1016/j.intimp.2020.107161] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Revised: 10/22/2020] [Accepted: 10/28/2020] [Indexed: 02/07/2023]
Abstract
Inflammatory bowel disease (IBD) is a chronic gastrointestinal inflammation regulated by intricate mechanisms. Limonin, a natural tetracyclic triterpenoid compound, possesses multiple bioactivities including anti-inflammation, anti-cancer and so on. However, the therapeutic potential and the underlying mechanism of limonin on IBD remain unclear. Here, we probe into the effect of limonin on chronic colitis induced by dextran sulfate sodium (DSS) and illustrated the potential mechanisms. We found that limonin relieved the risk and severity of DSS-induced chronic colitis in mice through various aspects including increasing body weight and colon length, decreasing the mortality rate, inhibiting MPO activity and improving colon pathology. Limonin also decreased the production of proinflammatory cytokines TNF-α, IL-1β, IL-6 and the expression of inflammatory proteins COX-2, iNOS in colon tissues from DSS-induced colitis mice. Moreover, limonin attenuated DSS-induced chronic colitis by inhibiting PERK-ATF4-CHOP pathway of endoplasmic reticulum (ER) stress and NF-κB signaling. In vitro, limonin not only decreased LPS-induced higher production of pro-inflammatory cytokines and inflammatory proteins mentioned above by inhibiting NF-κB signaling in macrophage cells RAW264.7, but also suppressed PERK-ATF4-CHOP pathway of ER stress. In summary, our study demonstrated that limonin mitigated DSS-induced chronic colitis via inhibiting PERK-ATF4-CHOP pathway of ER stress and NF-κB signaling. All of this study provides the possibility for limonin as an effective drug for chronic colitis of IBD in the future.
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Affiliation(s)
- Changqin Song
- School of Pharmaceutical Sciences, Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, People's Republic of China; College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, People's Republic of China
| | - Jiaxi Chen
- School of Pharmaceutical Sciences, Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, People's Republic of China
| | - Xiaotian Li
- School of Pharmaceutical Sciences, Zhengzhou University, 100 Science Avenue, Zhengzhou 450001, People's Republic of China
| | - Runyu Yang
- School of Pharmaceutical Sciences, Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, People's Republic of China
| | - Xiaomei Cao
- Department of Pharmacology, Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, People's Republic of China
| | - Lvqi Zhou
- School of Pharmaceutical Sciences, Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, People's Republic of China
| | - Yanfen Zhou
- School of Pharmaceutical Sciences, Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, People's Republic of China
| | - Hanjie Ying
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, People's Republic of China
| | - Qi Zhang
- School of Pharmaceutical Sciences, Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, People's Republic of China.
| | - Yang Sun
- School of Pharmaceutical Sciences, Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, People's Republic of China.
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15
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Tan L, Zhou LD, Jiang ZF, Ma RR, He JY, Xia ZN, Zhang QH, Wang CZ, Yuan CS. Selective separation and inexpensive purification of paclitaxel based on molecularly imprinted polymers modified with ternary deep eutectic solvents. J Pharm Biomed Anal 2020; 192:113661. [PMID: 33053507 DOI: 10.1016/j.jpba.2020.113661] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2020] [Revised: 06/14/2020] [Accepted: 09/27/2020] [Indexed: 11/25/2022]
Abstract
Paclitaxel (PTX) is a powerful anticancer natural product, with its separation and purification having been widely studied. In this work, new molecular imprinted polymers (MIPs) using deep eutectic solvents (DESs) with different molar ratios were prepared as functional monomers. These were then used as adsorbents in solid phase extraction (SPE) for the separation of PTX from its structural analogs. The polymers were characterized by energy disperive X-rays (EDX), scanning electron microscopy (SEM), thermogravimetric analysis (TGA) and fourier transform infrared spectroscopy (FT-IR). The results suggested that the formative regular DES-MIPs had an even pore-size distribution and a large specific surface area. The dynamic adsorption and static adsorption showed that the DES-MIPs had excellent adsorption performance, with a maximum adsorption capacity and optimum adsorption time of 87.08 mg/g and 180 min, respectively. The selective adsorption experiments showed that the material had outstanding selectivity, and the maximum selectivity factor was 6.20. For stability, after six consecutive adsorption and desorption cycles, the DES-MIPs maintained the perfect stability and reusability. Furthermore, the fabricated SPE column was successfully utilized for extracting and eluting PTX. This study provides a reliable protocol for the separation and purification PTX from its structural analogs and the DES-MIPs materials have excellent potential application value in pharmaceutical industry.
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Affiliation(s)
- Ling Tan
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, China; School of Pharmaceutical Sciences, Chongqing University, Chongqing 400044, China
| | - Lian-Di Zhou
- Basic Medical College, Chongqing Medical University, Chongqing 400016, China
| | - Zhuang-Fei Jiang
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, China
| | - Rong-Rong Ma
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, China
| | - Jia-Yuan He
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, China
| | - Zhi-Ning Xia
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, China; School of Pharmaceutical Sciences, Chongqing University, Chongqing 400044, China.
| | - Qi-Hui Zhang
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, China; Tang Center for Herbal Medicine Research and Department of Anesthesia & Critical Care, University of Chicago, Chicago, IL 60637, USA.
| | - Chong-Zhi Wang
- Tang Center for Herbal Medicine Research and Department of Anesthesia & Critical Care, University of Chicago, Chicago, IL 60637, USA
| | - Chun-Su Yuan
- Tang Center for Herbal Medicine Research and Department of Anesthesia & Critical Care, University of Chicago, Chicago, IL 60637, USA
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16
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Cheng Y, Nie J, Liu H, Kuang L, Xu G. Synthesis and characterization of magnetic molecularly imprinted polymers for effective extraction and determination of kaempferol from apple samples. J Chromatogr A 2020; 1630:461531. [PMID: 32950815 DOI: 10.1016/j.chroma.2020.461531] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Revised: 09/04/2020] [Accepted: 09/06/2020] [Indexed: 10/23/2022]
Abstract
The specific of magnetic molecularly imprinted polymers (Fe3O4@SiO2-MIPs) for kaempferol were fabricated by using acrylamide (AM) as the functional monomer, azobisisobutyronitrile (AIBN) as the initiator and ethylene glycol dimethacrylate (EGDMA) as the cross-linker. The Fe3O4@SiO2-MIPs showed high adsorption capacity (3.84 mg/g) for kaempferol, and the adsorption equilibrium was achieved within 50 min. The specific recognition capacity of Fe3O4@SiO2-MIPs was 3.02 times as high as that of Fe3O4@SiO2-NIPs. The Fe3O4@SiO2-MIPs showed high selectivity towards kaempferol over structural analogues. The recoveries of proposed method at three spiked levels analysis were ranged from 90.5% to 95.4% with the relative standard deviations (RSD) less than 5%. The obtained Fe3O4@SiO2-MIPs were successfully applied for the extraction and determination of kaempferol from apple samples. The established method was simple and feasible, which showed high selectivity, fast separation and satisfactory recoveries for real sample analysis.
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Affiliation(s)
- Yang Cheng
- Institute of Pomology, Chinese Academy of Agricultural Sciences/Laboratory of Quality & Safety Risk Assessment for Fruit (Xingcheng), Ministry of Agriculture and Rural Affairs/Supervision &Test Center of Fruit and Nursery Stocks Quality (Xingcheng), Ministry of Agriculture and Rural Affairs, Xingcheng 125100, PR China
| | - Jiyun Nie
- College of Horticulture, Qingdao Agriculture University/Qingdao Key Lab of Modern Agriculture Quality and Safety Engineering, Qingdao 266109, PR China; Institute of Pomology, Chinese Academy of Agricultural Sciences/Laboratory of Quality & Safety Risk Assessment for Fruit (Xingcheng), Ministry of Agriculture and Rural Affairs/Supervision &Test Center of Fruit and Nursery Stocks Quality (Xingcheng), Ministry of Agriculture and Rural Affairs, Xingcheng 125100, PR China.
| | - Hongdi Liu
- Institute of Pomology, Chinese Academy of Agricultural Sciences/Laboratory of Quality & Safety Risk Assessment for Fruit (Xingcheng), Ministry of Agriculture and Rural Affairs/Supervision &Test Center of Fruit and Nursery Stocks Quality (Xingcheng), Ministry of Agriculture and Rural Affairs, Xingcheng 125100, PR China
| | - Lixue Kuang
- Institute of Pomology, Chinese Academy of Agricultural Sciences/Laboratory of Quality & Safety Risk Assessment for Fruit (Xingcheng), Ministry of Agriculture and Rural Affairs/Supervision &Test Center of Fruit and Nursery Stocks Quality (Xingcheng), Ministry of Agriculture and Rural Affairs, Xingcheng 125100, PR China
| | - Guofeng Xu
- Institute of Pomology, Chinese Academy of Agricultural Sciences/Laboratory of Quality & Safety Risk Assessment for Fruit (Xingcheng), Ministry of Agriculture and Rural Affairs/Supervision &Test Center of Fruit and Nursery Stocks Quality (Xingcheng), Ministry of Agriculture and Rural Affairs, Xingcheng 125100, PR China
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17
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Wang J, Bian Y, Cheng Y, Sun R, Li G. Effect of lemon peel flavonoids on UVB-induced skin damage in mice. RSC Adv 2020; 10:31470-31478. [PMID: 35520688 PMCID: PMC9056540 DOI: 10.1039/d0ra05518b] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Accepted: 08/10/2020] [Indexed: 12/13/2022] Open
Abstract
By establishing an effective ultraviolet B (UVB) radiation model of skin damage in mice, the effect of lemon peel flavonoids (LPF) on skin damage was explored. UVB skin damage in UV-irradiated mice was simulated, and animal models were established. Serum parameters were measured using kits, skin sections were stained with hematoxylin-eosin (H&E) and Masson, and quantitative polymerase chain reaction (qPCR) was used to detect the expression of skin tissue-related mRNA. The experimental results showed that LPF increased the activity of catalase (CAT) and superoxide dismutase (SOD) oxidases in serum of mice with UVB-induced skin damage and decreased MDA, interleukin-1β (IL-1β), IL-6, IL-10, and tumor necrosis factor-alpha (TNF-α) levels. Pathological observation indicated that LPF alleviated the skin tissue lesions caused by UVB. LPF upregulated the mRNA expression of SOD1, SOD2, CAT, nuclear factor erythroid-2 related factor 2 (Nrf2), heme oxygenase-1 (HO-1), and inhibitor of NF-κB alpha (IκB-α) and downregulated the expression of nuclear factor kappa B (NF-κB), p38 MAPK, and cyclooxygenase-2 (COX-2) in the skin tissue of skin-damaged mice. There was a greater protective effect of LPF on the skin as compared to vitamin C (VC) at the same application concentration, and the effect of LPF was positively correlated with the concentration. High performance liquid chromatography (HPLC) analysis showed that LPF contained five flavonoid compounds, namely isomangiferin, rutin, astragalin, naringin, and quercetin. We demonstrated that flavonoids from LPF exhibit an excellent skin protection effect with satisfactory application value.
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Affiliation(s)
- Jun Wang
- National Citrus Engineering Research Center Chongqing 410125 China +86-23-6297-5381
- Citrus Research Institute, Southwest University Chongqing 400712 China
| | - Yunfeng Bian
- Guang'an Zhengwang Agriculture Co., Ltd Guang'an 638000 Sichuan China
| | - Yujiao Cheng
- National Citrus Engineering Research Center Chongqing 410125 China +86-23-6297-5381
- Citrus Research Institute, Southwest University Chongqing 400712 China
| | - Rongrong Sun
- National Citrus Engineering Research Center Chongqing 410125 China +86-23-6297-5381
- Citrus Research Institute, Southwest University Chongqing 400712 China
| | - Guijie Li
- National Citrus Engineering Research Center Chongqing 410125 China +86-23-6297-5381
- Citrus Research Institute, Southwest University Chongqing 400712 China
- Chongqing Collaborative Innovation Center for Functional Food, Chongqing University of Education Chongqing 400067 China
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18
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Hollow dummy template imprinted boronate-modified polymers for extraction of norepinephrine, epinephrine and dopamine prior to quantitation by HPLC. Mikrochim Acta 2019; 186:686. [DOI: 10.1007/s00604-019-3801-2] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Accepted: 09/07/2019] [Indexed: 12/26/2022]
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