1
|
Freha M, El-Amine Nouairi M, Bellil A. Method for quantifying catechin in a strawberry extract by measuring optical absorbance, at high sensitivity, under the effect of wavelength and concentration. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 308:123797. [PMID: 38134658 DOI: 10.1016/j.saa.2023.123797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Revised: 12/09/2023] [Accepted: 12/16/2023] [Indexed: 12/24/2023]
Abstract
Catechin is considered a powerful antioxidant, and its rapid quantification could help urgently prevent inflammatory and coronary heart diseases. Consequently, the UV-Vis absorption spectrophotometry assay technique could serve this need for rapid detection. For this reason, we have carefully studied the possibility of dosing this antioxidant found in strawberry extract with precision, despite its chemical complexity. In the dosage technique used; sometimes the dilution of the solutions could be the way to resolve a specific quantification problem such as catechin in strawberry extract. This is quite particular, when the optical extinction coefficient of the target substance is very low compared to the extinction coefficients of the other chemical compounds in the complex mixture, because at a certain dilution the absorption spectrum of the molecule could appear, specifically, with its total spectral form or at least at one of these wavelengths. In this article, we will study the possibility of rapidly measuring catechin from strawberry extract by spectrophotometry in UV-VIS, while reformulating the Beer-Lambert law in a new form where the extinction coefficient did not depend not only of the chemical nature of the solute and the solvent but also of the excitation wavelength (ε(λ), Eq. (9)). A catechin-methanol solution is taken as a reference to study the spectral variation due to the various dilutions of the solution and the determination of a limiting concentration where the excitation wavelength becomes constant (203 nm), thus the extinction coefficient of the catechin, denoted ε0, but the measurement sensitivity is suddenly reduced. A semi-empirical relationship is determined by linearization of the absorbance function which depended on the concentration (C) and the excitation wavelength (ε(λ)). A separation process will be exposed to recover the strawberry extract, as well as its spectral analysis. Finally, a procedure for analyzing any strawberry extract will be presented at the end of this scientific article.
Collapse
Affiliation(s)
- Mohammed Freha
- Faculty of Exact Sciences, Department of Chemistry, Algeria; Process Engineering and Solution Chemistry Laboratory (LGPCS), Algeria
| | - Mohammed El-Amine Nouairi
- Faculty of Sciences & Technology, Department of Science and Technology, Algeria; Process Engineering and Solution Chemistry Laboratory (LGPCS), Algeria.
| | - Ali Bellil
- Faculty of Sciences & Technology, Department of Process Engineering, Algeria; Process Engineering and Solution Chemistry Laboratory (LGPCS), Algeria
| |
Collapse
|
2
|
Quan X, Yan B. In Situ Generated Dye@MOF/COF Heterostructure for Fluorescence Detection of Chloroquine Phosphate and Folic Acid via Different Luminescent Channels. ACS APPLIED MATERIALS & INTERFACES 2023; 15:54634-54642. [PMID: 37972380 DOI: 10.1021/acsami.3c11298] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2023]
Abstract
Metal-organic framework (MOF) and covalent-organic framework (COF) hybrid materials can combine the unique properties of MOF and COF components, and their applications in fluorescence sensing have attracted more and more attention. Herein, ZIF-90 is grown on 3D-COF by a simple in situ growing method in which the 7-amino-4-methylcoumarin (AMC) is encapsulated in ZIF-90 to construct a fluorescent sensor. Chloroquine phosphate (CQP) can coordinate with Zn2+ to decompose the ZIF-90 and release AMC. At 365 nm excitation, the ratiometric fluorescence signal AMC/3D-COF (I430/I598) increases linearly with CQP in a linear range of 4 × 10-5 to 4 × 10-4 M in urine. Under 340 nm excitation, quantitative analysis of CQP in the serum (3 × 10-6 to 4 × 10-5 M) is based on the fluorescence intensity of Zn-CQP/3D-COF (I384/I598). In addition, AMC@ZIF-90/3D-COF (1) exhibits high anti-interference and selectivity in sensing of FA with a "turn off" mode, with a correlation range of 1 × 10-5 to 1 × 10-3 M. The fluorescence color changes triggered by CQP under different excitation conditions, and the different fluorescence responses caused by CQP make it a highly secure anticounterfeiting platform. The synthesized dye@MOF/COF hybrids not only provide a new way to integrate multiple emission to design fluorescent probes for differentiation detection but also offer ideas for the design of anticounterfeiting platforms.
Collapse
Affiliation(s)
- Xueping Quan
- Shanghai Key Lab of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, Siping Road 1239, Shanghai 200092, China
| | - Bing Yan
- Shanghai Key Lab of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, Siping Road 1239, Shanghai 200092, China
| |
Collapse
|
3
|
Cheng Y, Xue F, Yang Y. Hot Water Extraction of Antioxidants from Tea Leaves—Optimization of Brewing Conditions for Preparing Antioxidant-Rich Tea Drinks. Molecules 2023; 28:molecules28073030. [PMID: 37049793 PMCID: PMC10095724 DOI: 10.3390/molecules28073030] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Revised: 03/25/2023] [Accepted: 03/27/2023] [Indexed: 03/31/2023] Open
Abstract
There are billions of tea drinkers around the world. However, the optimized tea-brewing temperature and time conditions for achieving a higher concentration of antioxidants in tea drinks have not been thoroughly studied. Finding out the optimized brewing conditions can benefit tea drinkers significantly. In this work, we have studied ten antioxidants from seven different popular green, Oolong, black, and scented teas using hot water extraction followed by HPLC analysis. The antioxidant yield was evaluated at 25–100 °C with 5 to 720 min of brewing time. Our results show that the extraction efficiency was enhanced by increasing the water temperature and the highest yield of antioxidants was achieved at 100 °C. The antioxidant yield increased with prolonged brewing time. However, the degradation of antioxidants occurred when tea leaves were extracted for 120 to 720 min. Caffeine was found in all seven tea samples. At 100 °C, the caffein concentration in the tea extract ranged from 7.04 to 20.4 mg/g in Rizhao green tea. Longjing green tea contained the highest concentration of antioxidants (88 mg/g) in the 100 °C extract. Epigallocatechin and caffeine were the most abundant compounds found in all tea samples studied, ranging from 4.77 to 26.88 mg/g. The antioxidant yield was enhanced by increasing the extraction time to up to 60–120 min for all ten compounds studied.
Collapse
Affiliation(s)
- Yan Cheng
- Shandong Analysis and Test Centre, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250014, China
| | - Fumin Xue
- Shandong Analysis and Test Centre, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250014, China
| | - Yu Yang
- Department of Chemistry, East Carolina University, Greenville, NC 27858, USA
- Correspondence:
| |
Collapse
|
4
|
Balkrishna A, Verma S, Tiwari D, Srivastava J, Varshney A. UPLC-QToF-MS based fingerprinting of polyphenolic metabolites in the bark extract of Boehmeria rugulosa Wedd. JOURNAL OF MASS SPECTROMETRY : JMS 2022; 57:e4890. [PMID: 36353856 DOI: 10.1002/jms.4890] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Revised: 09/23/2022] [Accepted: 10/07/2022] [Indexed: 06/16/2023]
Abstract
Boehmeria rugulosa Wedd. is an evergreen tree of Urticaceae family. Its bark has been extensively used in ethno-medicinal system for various ailments such as bone fracture, sprain, snakebite, and wound healing. Phyto-metabolites, which are considered as the principle components for biological activities, have been least explored for this plant. The present work investigated metabolite profiling of the stem bark of B. rugulosa in water extract using Ultra Performance Liquid Chromatography Quadrupole Time of Flight Mass Spectrometry (UPLC-QToF-MS) technique coupled with the UNIFI platform. We identified, for the first time, 20 polyphenolic metabolites belonging to seven groups: caffeoylquinic acids, coumaroylquinic acids, flavan-3-ols, oligomeric flavonoids, caffeic acid derivatives, coumaric acid derivative, and flavone glycoside in the B. rugulosa extract. UNIFI informatics-coupled UPLC-QToF-MS platform aids in the quick identification and fragmentation pattern of metabolites, with higher degree of reproducibility. The present study provides a chemical and therapeutic basis for further exploration of B. rugulosa as a valuable source of phytochemicals that could be instrumental in deciphering its ethno-medicinal utility for various human diseases.
Collapse
Affiliation(s)
- Acharya Balkrishna
- Drug Discovery and Development Division, Patanjali Research Institute, Haridwar, India
- Department of Allied and Applied Sciences, University of Patanjali, Haridwar, India
- Patanjali Yog Peeth (UK) Trust, Glasgow, UK
| | - Sudeep Verma
- Drug Discovery and Development Division, Patanjali Research Institute, Haridwar, India
| | - Deepti Tiwari
- Drug Discovery and Development Division, Patanjali Research Institute, Haridwar, India
| | - Jyotish Srivastava
- Drug Discovery and Development Division, Patanjali Research Institute, Haridwar, India
| | - Anurag Varshney
- Drug Discovery and Development Division, Patanjali Research Institute, Haridwar, India
- Department of Allied and Applied Sciences, University of Patanjali, Haridwar, India
- Special Centre for Systems Medicine, Jawaharlal Nehru University, New Delhi, India
| |
Collapse
|
5
|
Hu Y, Wang C, Zhao P, Zhang L, Fei J, Xie Y. A novel catechin electrochemical sensor based on a two-dimensional MOFs material derivative Zn doped carbon nanosheets and multi-walled carbon nanotubes composite film. Talanta 2022; 246:123520. [DOI: 10.1016/j.talanta.2022.123520] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2021] [Revised: 04/28/2022] [Accepted: 04/29/2022] [Indexed: 10/18/2022]
|
6
|
Simultaneous Determination of Fifteen Polyphenols in Fruit Juice Using Ultrahigh-Performance Liquid Chromatography-Tandem Mass Spectrometry Combining Dispersive Liquid-Liquid Microextraction. Int J Anal Chem 2022; 2022:5486290. [PMID: 35371261 PMCID: PMC8967586 DOI: 10.1155/2022/5486290] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Revised: 03/01/2022] [Accepted: 03/08/2022] [Indexed: 02/07/2023] Open
Abstract
Polyphenols are secondary metabolites of plants and used as effective antioxidants in dietary supplements, whose main sources are fruits, vegetables, and grains. To clarify the content and distribution of polyphenols in different fruit species samples accurately, a rapid and sensitive ultrahigh-pressure liquid chromatography-electrospray ionization-tandem mass spectrometry (UPLC-ESI-MS/MS) method combining dispersive liquid-liquid microextraction (DLLME) was developed for quantitative determination of fifteen polyphenol compounds in fruit juice. In this method, the targets were first extracted from 1 g of fruit juice sample using 10 mL of 80% ethanol solution by ultrasonic-assisted extraction (UAE). Then, 1.0 mL of UAE extracted solution, 60 μL of n-octanol and 2.0 mL of H2O were performed in the following DLLME procedure. A C18 reversed-phase column, ZORBAX SB (100 × 4.6 mm, 3.5 μm), was proposed under gradient elution with 0.1% formic acid aqueous solution and methanol mobile phases for the determination of 15 polyphenols, allowing us to obtain polyphenolic profiles in less than 23.0 min. Under the optimum conditions, the enrichment factors ranged from 162 to 194. The results showed that the 15 polyphenols had linear correlation coefficients (R2) more than 0.99. The limits of detection (LODs) were between 18.3 and 103.5 ng/g, and the average recoveries were between 96.9 and 116.3% with interday relative standard deviations (RSDs) ranging from 4.4 to 8.2% in all cases. The method was successfully applied to the analysis of real fruit juice samples and presented itself as a simple, rapid, practical, and environment-friendly technique.
Collapse
|
7
|
Liu M, Chen Q, Sun Y, Zeng L, Wu H, Gu Q, Li P. Probiotic Potential of a Folate-Producing Strain Latilactobacillus sakei LZ217 and Its Modulation Effects on Human Gut Microbiota. Foods 2022; 11:234. [PMID: 35053965 PMCID: PMC8774781 DOI: 10.3390/foods11020234] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 01/11/2022] [Accepted: 01/13/2022] [Indexed: 01/27/2023] Open
Abstract
Folate is a B-vitamin required for DNA synthesis, methylation, and cellular division, whose deficiencies are associated with various disorders and diseases. Currently, most folic acid used for fortification is synthesized chemically, causing undesirable side effects. However, using folate-producing probiotics is a viable option, which fortify folate in situ and regulate intestinal microbiota. In this study, the folate production potential of newly isolated strains from raw milk was analyzed by microbiological assay. Latilactobacillus sakei LZ217 showed the highest folate production in Folic Acid Assay Broth, 239.70 ± 0.03 ng/μL. The folate produced by LZ217 was identified as 5-methyltetrahydrofolate. LZ217 was tolerant to environmental stresses (temperature, pH, NaCl, and ethanol), and was resistant to gastrointestinal juices. Additionally, the in vitro effects of LZ217 on human gut microbiota were investigated by fecal slurry cultures. 16S rDNA gene sequencing indicated that fermented samples containing LZ217 significantly increased the abundance of phylum Firmicutes and genus Lactobacillus, Faecalibacterium, Ruminococcus 2, Butyricicoccus compared to not containing. Short-chain fatty acids (SCFAs) analysis revealed that LZ217 also increased the production of butyric acid by fermentation. Together, L. sakei LZ217 could be considered as a probiotic candidate to fortify folate and regulate intestinal microecology.
Collapse
Affiliation(s)
- Manman Liu
- College of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310018, China; (M.L.); (Q.C.); (Y.S.); (L.Z.); (H.W.)
- Key Laboratory for Food Microbial Technology of Zhejiang Province, Hangzhou 310018, China
| | - Qingqing Chen
- College of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310018, China; (M.L.); (Q.C.); (Y.S.); (L.Z.); (H.W.)
- Key Laboratory for Food Microbial Technology of Zhejiang Province, Hangzhou 310018, China
| | - Yalian Sun
- College of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310018, China; (M.L.); (Q.C.); (Y.S.); (L.Z.); (H.W.)
- Key Laboratory for Food Microbial Technology of Zhejiang Province, Hangzhou 310018, China
| | - Lingzhou Zeng
- College of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310018, China; (M.L.); (Q.C.); (Y.S.); (L.Z.); (H.W.)
- Key Laboratory for Food Microbial Technology of Zhejiang Province, Hangzhou 310018, China
| | - Hongchen Wu
- College of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310018, China; (M.L.); (Q.C.); (Y.S.); (L.Z.); (H.W.)
- Key Laboratory for Food Microbial Technology of Zhejiang Province, Hangzhou 310018, China
| | - Qing Gu
- Key Laboratory for Food Microbial Technology of Zhejiang Province, Hangzhou 310018, China
| | - Ping Li
- College of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310018, China; (M.L.); (Q.C.); (Y.S.); (L.Z.); (H.W.)
| |
Collapse
|
8
|
Shen K, Yuan Y, Zhang C, Yao J. Construction of a HPLC-SERS hyphenated system for continuous separation and detection based on paper substrates. Analyst 2022; 147:4073-4081. [DOI: 10.1039/d2an00993e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The HPLC-SERS hyphenated system exhibited the complementary capability of on-line separation and continuous structural identification. It was extended to the application in identifying the illegally added hypoglycemic drugs in the practical dietary supplements.
Collapse
Affiliation(s)
- Kerui Shen
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Yaxian Yuan
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Chenjie Zhang
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Jianlin Yao
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| |
Collapse
|
9
|
Zhang L, Li J, Wang C, Huang L, Huang M, Wang Y, Tang X, Zhao P, Xie Y, Fei J. Ultrasensitive catechin electrochemical sensor based on uniform ordered mesoporous carbon hollow spheres (MCHSs) advanced carbon-based conductive materials. Analyst 2022; 147:5239-5247. [DOI: 10.1039/d2an01405j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Fabrication of an electrochemical catechin sensor composed of mesoporous carbon hollow spheres (MCHSs) and its application in actual sample detection. The MCHSs were obtained using a simple one-pot method without a surfactant.
Collapse
Affiliation(s)
- Li Zhang
- Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, College of, Chemistry, Xiangtan University, Xiangtan 411105, People's Republic of China
- College of Chemistry and Materials Engineering, Huaihua University, Huaihua 418000, PR China
| | - Jiejun Li
- Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, College of, Chemistry, Xiangtan University, Xiangtan 411105, People's Republic of China
| | - Chenxi Wang
- Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, College of, Chemistry, Xiangtan University, Xiangtan 411105, People's Republic of China
| | - Linzi Huang
- Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, College of, Chemistry, Xiangtan University, Xiangtan 411105, People's Republic of China
| | - Minghui Huang
- Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, College of, Chemistry, Xiangtan University, Xiangtan 411105, People's Republic of China
| | - Yuefan Wang
- Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, College of, Chemistry, Xiangtan University, Xiangtan 411105, People's Republic of China
| | - Xi Tang
- Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, College of, Chemistry, Xiangtan University, Xiangtan 411105, People's Republic of China
| | - Pengcheng Zhao
- Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, College of, Chemistry, Xiangtan University, Xiangtan 411105, People's Republic of China
| | - Yixi Xie
- Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, College of, Chemistry, Xiangtan University, Xiangtan 411105, People's Republic of China
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Xiangtan University, Xiangtan 411105, People's Republic of China
| | - Junjie Fei
- Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, College of, Chemistry, Xiangtan University, Xiangtan 411105, People's Republic of China
- Hunan Institute of Advanced Sensing and Information Technology, Xiangtan University, Xiangtan 411105, People's Republic of China
| |
Collapse
|
10
|
Xu Y, Liang PL, Chen XL, Gong MJ, Zhang L, Qiu XH, Zhang J, Huang ZH, Xu W. The Impact of Citrus-Tea Cofermentation Process on Chemical Composition and Contents of Pu-Erh Tea: An Integrated Metabolomics Study. Front Nutr 2021; 8:737539. [PMID: 34604284 PMCID: PMC8484324 DOI: 10.3389/fnut.2021.737539] [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: 07/07/2021] [Accepted: 08/18/2021] [Indexed: 11/13/2022] Open
Abstract
Ganpu tea, an emerging pu-erh compound tea, which is cofermented with the peel of Citrus reticulata "Chachi," has been widely favored by Chinese consumers due to its potential health effects and distinct flavor and taste. So far, the influence of this cofermentation procedure on the chemical profile of pu-erh tea has barely been addressed yet. In this work, an ultra-high-performance liquid chromatography-Q Exactive Orbitrap mass spectrometry (UHPLC-QE Orbitrap MS)-based qualitative and quantitative method combined with multivariate analysis was conducted to comprehensively investigate the chemical changes in pu-erh tea after cofermented with Citrus peel. A total of 171 compounds were identified based on a three-level strategy, among which seven phenolic acids, 11 flavan-3-ols, and 27 flavonoids and flavonoid glycosides were identified from pu-erh tea for the first time. Eighty-nine main constituents were selected for further quantitative analysis using a validated method. Both the principal component analysis (PCA) of untargeted metabolomics and orthogonal partial least squares discriminant analysis (OPLS-DA) models of targeted components revealed the significant chemical profile disparity between the raw pu-erh tea and Ganpu tea. It showed that Citrus tea cofermentation process significantly decreased the total contents of phenolic acids, flavan-3-ols, and flavonoid aglycones, while most of the quercetin glycosides and myricetin glycosides as well as the vitexin were significantly increased. In addition, hesperidin, a flavonoid glycoside only existed in Citrus, was first found in pu-erh tea after cofermented with Citrus. This study clearly profiled the chemical composition and content changes of pu-erh tea after cofermented with Citrus peel, which revealed that Citrus tea cofermentation process further accelerated the fermentation of pu-erh tea and improved the unique flavor of tea.
Collapse
Affiliation(s)
- Ya Xu
- Key Laboratory of Quality Evaluation of Chinese Medicine of the Guangdong Provincial Medical Products Administration, The Second Clinical College of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Pu-Lin Liang
- Key Laboratory of Quality Evaluation of Chinese Medicine of the Guangdong Provincial Medical Products Administration, The Second Clinical College of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Xue-Lian Chen
- Key Laboratory of Quality Evaluation of Chinese Medicine of the Guangdong Provincial Medical Products Administration, The Second Clinical College of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Ming-Jiong Gong
- Key Laboratory of Quality Evaluation of Chinese Medicine of the Guangdong Provincial Medical Products Administration, The Second Clinical College of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Liang Zhang
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, China
| | - Xiao-Hui Qiu
- Key Laboratory of Quality Evaluation of Chinese Medicine of the Guangdong Provincial Medical Products Administration, The Second Clinical College of Guangzhou University of Chinese Medicine, Guangzhou, China
- Guangdong Provincial Key Laboratory of Clinical Research on Traditional Chinese Medicine Syndrome, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, China
- Guangzhou Key Laboratory of Chirality Research on Active Components of Traditional Medicine, Guangzhou, China
| | - Jing Zhang
- Key Laboratory of Quality Evaluation of Chinese Medicine of the Guangdong Provincial Medical Products Administration, The Second Clinical College of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Zhi-Hai Huang
- Key Laboratory of Quality Evaluation of Chinese Medicine of the Guangdong Provincial Medical Products Administration, The Second Clinical College of Guangzhou University of Chinese Medicine, Guangzhou, China
- Guangdong Provincial Key Laboratory of Clinical Research on Traditional Chinese Medicine Syndrome, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, China
| | - Wen Xu
- Key Laboratory of Quality Evaluation of Chinese Medicine of the Guangdong Provincial Medical Products Administration, The Second Clinical College of Guangzhou University of Chinese Medicine, Guangzhou, China
- Guangdong Provincial Key Laboratory of Clinical Research on Traditional Chinese Medicine Syndrome, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, China
- Guangzhou Key Laboratory of Chirality Research on Active Components of Traditional Medicine, Guangzhou, China
| |
Collapse
|
11
|
Fiedot-Toboła M, Dmochowska A, Potaniec B, Czajkowska J, Jędrzejewski R, Wilk-Kozubek M, Carolak E, Cybińska J. Gallic Acid Based Black Tea Extract as a Stabilizing Agent in ZnO Particles Green Synthesis. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:1816. [PMID: 34361207 PMCID: PMC8308264 DOI: 10.3390/nano11071816] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Revised: 07/08/2021] [Accepted: 07/09/2021] [Indexed: 12/12/2022]
Abstract
In this work, zinc oxide particles (ZnO NPs) green synthesis with the application of black tea extract (BT) is presented. A thorough investigation of the properties of the extract and the obtained materials was conducted by using Fourier transform infrared spectroscopy (FTIR), liquid chromatography-mass spectrometry (LC-MS), X-ray diffraction (XRD), scanning electron microscopy (SEM), thermogravimetric analysis (TGA), and quadrupole mass spectroscopy (QMS). The obtained results indicated that the amount of used BT strongly influenced the morphology, chemical, and crystalline structure of the obtained particles. The investigation demonstrated that the substance present in black tea (BT) extract, which was adsorbed on the ZnO surface, was in fact gallic acid. It was found that gallic acid controls the crystallization process of ZnO by temporarily blocking the zinc cations. Additionally, these organic molecules interact with the hydroxide group of the precipitant. This blocks the dehydration process stabilizing the zinc hydroxide forms and hinders its transformation into zinc oxide. Performed measurements indicated that obtained ZnO particles have great antioxidant and antimicrobial properties, which are significantly correlated with ZnO-gallic acid interactions.
Collapse
Affiliation(s)
- Marta Fiedot-Toboła
- Łukasiewicz Research Network−PORT Polish Center for Technology Development, Stabłowicka 147, 54-066 Wrocław, Poland; (A.D.); (B.P.); (J.C.); (R.J.); (M.W.-K.); (E.C.); (J.C.)
| | - Anna Dmochowska
- Łukasiewicz Research Network−PORT Polish Center for Technology Development, Stabłowicka 147, 54-066 Wrocław, Poland; (A.D.); (B.P.); (J.C.); (R.J.); (M.W.-K.); (E.C.); (J.C.)
| | - Bartłomiej Potaniec
- Łukasiewicz Research Network−PORT Polish Center for Technology Development, Stabłowicka 147, 54-066 Wrocław, Poland; (A.D.); (B.P.); (J.C.); (R.J.); (M.W.-K.); (E.C.); (J.C.)
| | - Joanna Czajkowska
- Łukasiewicz Research Network−PORT Polish Center for Technology Development, Stabłowicka 147, 54-066 Wrocław, Poland; (A.D.); (B.P.); (J.C.); (R.J.); (M.W.-K.); (E.C.); (J.C.)
| | - Roman Jędrzejewski
- Łukasiewicz Research Network−PORT Polish Center for Technology Development, Stabłowicka 147, 54-066 Wrocław, Poland; (A.D.); (B.P.); (J.C.); (R.J.); (M.W.-K.); (E.C.); (J.C.)
| | - Magdalena Wilk-Kozubek
- Łukasiewicz Research Network−PORT Polish Center for Technology Development, Stabłowicka 147, 54-066 Wrocław, Poland; (A.D.); (B.P.); (J.C.); (R.J.); (M.W.-K.); (E.C.); (J.C.)
| | - Ewa Carolak
- Łukasiewicz Research Network−PORT Polish Center for Technology Development, Stabłowicka 147, 54-066 Wrocław, Poland; (A.D.); (B.P.); (J.C.); (R.J.); (M.W.-K.); (E.C.); (J.C.)
| | - Joanna Cybińska
- Łukasiewicz Research Network−PORT Polish Center for Technology Development, Stabłowicka 147, 54-066 Wrocław, Poland; (A.D.); (B.P.); (J.C.); (R.J.); (M.W.-K.); (E.C.); (J.C.)
- Faculty of Chemistry, University of Wroclaw, 14 F. Joliot-Curie Str., 50-383 Wroclaw, Poland
| |
Collapse
|
12
|
Basak M, Halder S, Das G. Folic acid induced disassembly of self-assembled fluorene-naphthalene based receptor and contemporaneous detection of folic acid in aqueous medium. J Photochem Photobiol A Chem 2021. [DOI: 10.1016/j.jphotochem.2021.113292] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
|
13
|
Sanaeifar A, Huang X, Chen M, Zhao Z, Ji Y, Li X, He Y, Zhu Y, Chen X, Yu X. Nondestructive monitoring of polyphenols and caffeine during green tea processing using Vis-NIR spectroscopy. Food Sci Nutr 2020; 8:5860-5874. [PMID: 33282238 PMCID: PMC7684591 DOI: 10.1002/fsn3.1861] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 08/12/2020] [Accepted: 08/12/2020] [Indexed: 11/06/2022] Open
Abstract
Increasing consumption of green tea is attributed to the beneficial effects of its constituents, especially polyphenols, on human health, which can be varied during leaf processing. Processing technology has the most important effect on green tea quality. This study investigated the system dynamics of eight catechins, gallic acid, and caffeine in the processing of two varieties of tea, from fresh leaves to finished tea. It was found that complex biochemical changes can occur through hydrolysis under different humidity and heating conditions during the tea processing. This process had a significant effect on catechin composition in the finished tea. The potential application of visible and near-infrared (Vis-NIR) spectroscopy for fast monitoring polyphenol and caffeine contents in tea leaves during the processing procedure has been investigated. It was found that a combination of PCA (principal component analysis) and Vis-NIR spectroscopy can successfully classify the two varieties of tea samples and the five tea processing procedures, while quantitative determination of the constituents was realized by combined regression analysis and Vis-NIR spectra. Furthermore, successive projections algorithm (SPA) was proposed to extract and optimize spectral variables that reflected the molecular characteristics of the constituents for the development of determination models. Modeling results showed that the models had good predictability and robustness based on the extracted spectral characteristics. The coefficients of determination for all calibration sets and prediction sets were higher than 0.862 and 0.834, respectively, which indicated high capability of Vis-NIR spectroscopy for the determination of the constituents during the leaf processing. Meanwhile, this analytical method could quickly monitor quality characteristics and provide feedback for real-time controlling of tea processing machines. Furthermore, the study on complex biochemical changes that occurred during the tea processing would provide a theoretical basis for improving the content of quality components and effective controlling processes.
Collapse
Affiliation(s)
- Alireza Sanaeifar
- College of Biosystems Engineering and Food ScienceZhejiang UniversityHangzhouChina
| | - Xinyao Huang
- College of Biosystems Engineering and Food ScienceZhejiang UniversityHangzhouChina
| | - Mengyuan Chen
- College of Biosystems Engineering and Food ScienceZhejiang UniversityHangzhouChina
| | - Zhangfeng Zhao
- College of Mechanical EngineeringZhejiang University of TechnologyHangzhouChina
| | - Yifan Ji
- College of Biosystems Engineering and Food ScienceZhejiang UniversityHangzhouChina
| | - Xiaoli Li
- College of Biosystems Engineering and Food ScienceZhejiang UniversityHangzhouChina
| | - Yong He
- College of Biosystems Engineering and Food ScienceZhejiang UniversityHangzhouChina
| | - Yi Zhu
- College of Biosystems Engineering and Food ScienceZhejiang UniversityHangzhouChina
| | - Xi Chen
- College of Biosystems Engineering and Food ScienceZhejiang UniversityHangzhouChina
| | - Xinxin Yu
- College of Biosystems Engineering and Food ScienceZhejiang UniversityHangzhouChina
| |
Collapse
|
14
|
Huang JJ, Yu H, Hong G, Cheng H, Zheng M. Antifungal effect of tea extracts on Candida albicans. Dent Mater J 2020; 39:664-669. [PMID: 32249233 DOI: 10.4012/dmj.2019-014] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Determining whether tea extracts are effective in removing Candida albicans (C. albicans) from dentures is of interest. This study aimed to investigate the antifungal effect of tea extracts on C. albicans. One green tea (Anji white tea, AGW) and 2 oolong teas (Tie Guan Yin, TGY; Da Hong Pao, DHP) of different concentrations were tested. C. albicans suspensions were inoculated on the plates and the numbers of colony-forming units (CFU) in the culture medium were used to screen for the optimum tea extracts. Polymethyl methacrylate (PMMA) specimens that contained C. albicans biofilms were then treated with the tea extracts and the numbers of CFU were counted. The antifungal activities of the tea extracts were not significantly correlated with their catechin concentrations. Although AGW at 10.0 mg/mL and DHP at 2.5 mg/mL significantly inhibited C. albicans in the culture medium, the extracts failed to exert inhibitory effects against C. albicans biofilms on the PMMA surfaces.
Collapse
Affiliation(s)
- Jing-Jing Huang
- Department of Prosthodontics, School and Hospital of Stomatology, Fujian Medical University
| | - Hao Yu
- Department of Prosthodontics, School and Hospital of Stomatology, Fujian Medical University.,Department of Applied Prosthodontics, Graduate School of Biomedical Sciences, Nagasaki University
| | - Guang Hong
- Liaison Center for Innovative Dentistry, Graduate School of Dentistry, Tohoku University.,Faculty of Dental Medicine, Airlangga University
| | - Hui Cheng
- Department of Prosthodontics, School and Hospital of Stomatology, Fujian Medical University
| | - Ming Zheng
- Department of Prosthodontics, School and Hospital of Stomatology, Fujian Medical University
| |
Collapse
|
15
|
Facile approach to the synthesis of molecularly imprinted ratiometric fluorescence nanosensor for the visual detection of folic acid. Food Chem 2020; 319:126575. [DOI: 10.1016/j.foodchem.2020.126575] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Revised: 10/15/2019] [Accepted: 03/06/2020] [Indexed: 01/20/2023]
|
16
|
Paper-based colorimetric probe for highly sensitive detection of folic acid based on open-ring form amplification of rhodamine B derivative. J IND ENG CHEM 2020. [DOI: 10.1016/j.jiec.2019.09.025] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
17
|
Liu R, Zhao Z, Dai S, Che X, Liu W. Identification and Quantification of Bioactive Compounds in Diaphragma juglandis Fructus by UHPLC-Q-Orbitrap HRMS and UHPLC-MS/MS. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:3811-3825. [PMID: 30830781 DOI: 10.1021/acs.jafc.8b06890] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Diaphragma juglandis fructus is the dry wooden diaphragm inside walnuts and a byproduct in food processing of walnut kernels. The purpose of our research is to enrich the information on compounds in Diaphragma juglandis fructus to further discover and exploit its potential nutritional value. In this study, new quali-quantitative analytical approaches were developed to identify and determine bioactive compounds in Diaphragma juglandis fructus. Two-hundred compounds, including hydrolyzable tannins, flavonoids, phenolic acids, and quinones, were identified by UHPLC-Q-Orbitrap HRMS, more than 150 of which were first discovered in Diaphragma juglandis fructus. Among them, 21 major dietary polyphenols with health-promoting effects were successfully quantified using UHPLC-MS/MS, with total contents of 2.88-6.18 mg/g. This successful characterization and quantification of bioactive compounds in Diaphragma juglandis fructus gives a better understanding of its potential nutritional value and supports efficiently developing and reusing it instead of discarding it as agrofood waste.
Collapse
Affiliation(s)
- Rongxia Liu
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong , Yantai University , Yantai 264005 , China
| | - Ziyan Zhao
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong , Yantai University , Yantai 264005 , China
| | - Shengjun Dai
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong , Yantai University , Yantai 264005 , China
| | - Xin Che
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong , Yantai University , Yantai 264005 , China
| | - Wanhui Liu
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong , Yantai University , Yantai 264005 , China
| |
Collapse
|
18
|
Xin Z, Ma S, Ren D, Liu W, Han B, Zhang Y, Xiao J, Yi L, Deng B. UPLC–Orbitrap–MS/MS combined with chemometrics establishes variations in chemical components in green tea from Yunnan and Hunan origins. Food Chem 2018; 266:534-544. [PMID: 30381222 DOI: 10.1016/j.foodchem.2018.06.056] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2017] [Revised: 05/08/2018] [Accepted: 06/12/2018] [Indexed: 02/08/2023]
|
19
|
Guo PC, Shen HD, Fang JJ, Ding TM, Ding XP, Liu JF. On-line high-performance liquid chromatography coupled with biochemical detection method for screening of α-glucosidase inhibitors in green tea. Biomed Chromatogr 2018; 32:e4281. [PMID: 29744906 DOI: 10.1002/bmc.4281] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2017] [Revised: 04/20/2018] [Accepted: 04/26/2018] [Indexed: 12/12/2022]
Abstract
An on-line high-performance liquid chromatography-biochemical detection (HPLC-BCD) method, in which compounds separated by HPLC were on-line reacted with enzyme and substrate solutions delivered by flow injection and the enzyme inhibition signal was collected by UV detection, was developed to rapidly screen α-glucosidase inhibitors from green tea extracts in this study. The chromatographic fingerprints and enzyme inhibition profiles of the different brands of green tea could be simultaneously detected by the on-line HPLC-BCD method. Enzyme inhibition profiles were detected by the UV detector at 415 nm based on the reaction of α-glucosidase and p-nitrophenyl α-d-glucopyranoside (PNPG). PNPG (1.25 mm), α-glucosidase (0.4 U/mL) and the flow rate 0.07 mL/min were applied as optimized parameters to detect α-glucosidase inhibitors in green tea. Four components in green tea showed α-glucosidase inhibition action and three of them were identified as HHDP-galloyl glucose, (-)-epigallocatechin-3-gallate and (-)-epicatechin-3-gallate by HPLC-fourier-transform mass spectrometry (HPLC-FTMS). Two brands of green tea derived from Mengding and Enshi mountainous areas might be superior to the other samples in the prevention and treatment of diabetes owing to their stronger activities of enzyme inhibitors. The proposed on-line HPLC-BCD method could be used to rapidly identify the potential enzyme inhibitors in complex matrixes.
Collapse
Affiliation(s)
| | - Hua-Dan Shen
- Hubei University of Chinese Medicine, Wuhan, China
| | | | | | | | - Jun-Feng Liu
- Hubei University of Chinese Medicine, Wuhan, China
| |
Collapse
|
20
|
Hu O, Xu L, Fu H, Yang T, Fan Y, Lan W, Tang H, Wu Y, Ma L, Wu D, Wang Y, Xiao Z, She Y. "Turn-off" fluorescent sensor based on double quantum dots coupled with chemometrics for highly sensitive and specific recognition of 53 famous green teas. Anal Chim Acta 2018; 1008:103-110. [PMID: 29420939 DOI: 10.1016/j.aca.2017.12.042] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2017] [Revised: 12/25/2017] [Accepted: 12/27/2017] [Indexed: 12/15/2022]
Abstract
Fluorescent "turn-off" sensors based on double quantum dots (QDs) has attracted increasing attention in the detection of many materials due to their properties such as more useful information, higher fluorescence efficiency and stability compared with the fluorescent "turn-off" sensors based on single QDs. In this work, highly sensitive and specific method for recognition of 53 different famous green teas was developed based on the fluorescent "turn-off" model with water-soluble ZnCdSe-CdTe double QDs. The fluorescence of the two QDs can be quenched by different teas with varying degrees, which results in the differences in positions and intensities of two peaks. By the combination of classic partial least square discriminant analysis (PLSDA), all the green teas can be discriminated with high sensitivity, specificity and a satisfactory recognition rate of 100% for training set and 100% for prediction set, respectively. The fluorescent "turn-off" sensors based on the single QDs (either ZnCdSe QDs or CdTe QDs) coupled with PLSDA were also employed to recognize the 53 famous green teas with unsatisfactory results. Therefore, the fluorescent "turn-off" sensors based on the double QDs is more appropriate for the large-class-number classification (LCNC) of green teas. Herein, we have demonstrated, for the first time, that so many kinds of famous green teas can be discriminated by the "turn-off" model of double QDs combined with chemometrics, which has largely extended the capability of traditional fluorescence and chemometrics, as well as exhibits great potential to perform LCNC in other practical applications.
Collapse
Affiliation(s)
- Ou Hu
- The Modernization Engineering Technology Research Center of Ethnic Minority Medicine of Hubei Province, School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan 430074, PR China
| | - Lu Xu
- College of Material and Chemical Engineering, Tongren University, Tongren 554300, Guizhou, PR China
| | - Haiyan Fu
- The Modernization Engineering Technology Research Center of Ethnic Minority Medicine of Hubei Province, School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan 430074, PR China.
| | - Tianming Yang
- The Modernization Engineering Technology Research Center of Ethnic Minority Medicine of Hubei Province, School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan 430074, PR China
| | - Yao Fan
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310032, PR China
| | - Wei Lan
- The Modernization Engineering Technology Research Center of Ethnic Minority Medicine of Hubei Province, School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan 430074, PR China
| | - Hebing Tang
- The Modernization Engineering Technology Research Center of Ethnic Minority Medicine of Hubei Province, School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan 430074, PR China
| | - Yu Wu
- The Modernization Engineering Technology Research Center of Ethnic Minority Medicine of Hubei Province, School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan 430074, PR China
| | - Lixia Ma
- The Modernization Engineering Technology Research Center of Ethnic Minority Medicine of Hubei Province, School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan 430074, PR China
| | - Di Wu
- The Modernization Engineering Technology Research Center of Ethnic Minority Medicine of Hubei Province, School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan 430074, PR China
| | - Yuan Wang
- The Modernization Engineering Technology Research Center of Ethnic Minority Medicine of Hubei Province, School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan 430074, PR China
| | - Zuobing Xiao
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai 201418, PR China
| | - Yuanbin She
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310032, PR China.
| |
Collapse
|
21
|
Zeng Z, Ji Z, Hu N, Chen S, Bai B, Wang H, Suo Y. Synchronous determination with double-wavelength by RP-HPLC-UV and optimization of ultrasound-assisted extraction of phenolic acids from Caragana species using response surface methodology. J Pharm Biomed Anal 2017; 140:182-189. [PMID: 28359966 DOI: 10.1016/j.jpba.2017.03.017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2016] [Revised: 03/09/2017] [Accepted: 03/11/2017] [Indexed: 11/29/2022]
Abstract
The utilization of Caragana korshinskii Kom. (CK) is currently concentrated on its ecological and fuel functions. Little attention has been devoted to the analysis of their phenolic acid (PA) components. To obtain more data for further utilization of CK, a new analysis protocol was tested to determine PAs synchronously by RP-HPLC-UV with double-wavelength (280nm and 320nm) detection. Specifically, separation of PA components was performed on a Hypersil Gold C18 reverse phase column with gradient elution. A four-factor-three-level Box-Behnken design was implemented for optimization of PA extraction. The results demonstrated that CK were rich primarily in chlorogenic acid, vanillic acid, caffeic acid and rosmarinic acid. The total content of PAs in CK leaves was the highest compared with its other parts. The distribution of total flavonoid content of CK was leaves>flowers>bark, while that of the total phenolic content of CK was flowers>leaves>bark.
Collapse
Affiliation(s)
- Zhi Zeng
- Key Laboratory of Tibetan Medicine Research, Northwest Plateau Institute of Biology, Chinese Academy of Sciences, Xining, 810008, China; University of Chinese Academy of Science, Beijing, 100049, China
| | - Zhongyin Ji
- Key Laboratory of Tibetan Medicine Research, Northwest Plateau Institute of Biology, Chinese Academy of Sciences, Xining, 810008, China; University of Chinese Academy of Science, Beijing, 100049, China
| | - Na Hu
- Key Laboratory of Tibetan Medicine Research, Northwest Plateau Institute of Biology, Chinese Academy of Sciences, Xining, 810008, China
| | - Shasha Chen
- Key Laboratory of Tibetan Medicine Research, Northwest Plateau Institute of Biology, Chinese Academy of Sciences, Xining, 810008, China; University of Chinese Academy of Science, Beijing, 100049, China
| | - Bo Bai
- Key Laboratory of Tibetan Medicine Research, Northwest Plateau Institute of Biology, Chinese Academy of Sciences, Xining, 810008, China; State Key Laboratory of Plateau Ecology and Agriculture (Qinghai University), Xining, 810016, China.
| | - Honglun Wang
- Key Laboratory of Tibetan Medicine Research, Northwest Plateau Institute of Biology, Chinese Academy of Sciences, Xining, 810008, China; State Key Laboratory of Plateau Ecology and Agriculture (Qinghai University), Xining, 810016, China
| | - Yourui Suo
- Key Laboratory of Tibetan Medicine Research, Northwest Plateau Institute of Biology, Chinese Academy of Sciences, Xining, 810008, China; State Key Laboratory of Plateau Ecology and Agriculture (Qinghai University), Xining, 810016, China
| |
Collapse
|
22
|
Wu X, Chen X, Gao F, Ma W, Xu L, Kuang H, Li A, Xu C. SERS encoded nanoparticle heterodimers for the ultrasensitive detection of folic acid. Biosens Bioelectron 2016; 75:55-8. [PMID: 26296240 DOI: 10.1016/j.bios.2015.08.009] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2015] [Revised: 08/06/2015] [Accepted: 08/07/2015] [Indexed: 11/18/2022]
Abstract
In this paper, gold–silver nanoparticle (AuNP–AgNP) heterodimers were assembled with highly yield as an active SERS substrate, based on antigen–antibody immunoreaction. The developed SERS sensor has successful achieved the ultrasensitive detection of folic acid (FA) with the limit of detection (LOD) as 0.86 pg/mL. And the linear range was from 0.005 ng/mL to 1 ng/mL. The results also demonstrated that this developed method showed high specificity and excellent recovery for the human serum samples, indicating its promising potential in bio-diagnosis and the environmental monitoring.
Collapse
|
23
|
Determination of 19 Representative Pesticides in Traditional Chinese Medicines by Dispersive Liquid-Liquid Microextraction and Ultrahigh-Performance Liquid Chromatography–Tandem Mass Spectrometry. Chromatographia 2016. [DOI: 10.1007/s10337-016-3105-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
|
24
|
Susanti E, Ciptati, Ratnawati R, Aulanni'am, Rudijanto A. Qualitative analysis of catechins from green tea GMB-4 clone using HPLC and LC-MS/MS. Asian Pac J Trop Biomed 2015. [DOI: 10.1016/j.apjtb.2015.09.013] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
|
25
|
Svoboda P, Vlčková H, Nováková L. Development and validation of UHPLC–MS/MS method for determination of eight naturally occurring catechin derivatives in various tea samples and the role of matrix effects. J Pharm Biomed Anal 2015; 114:62-70. [DOI: 10.1016/j.jpba.2015.04.026] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2015] [Revised: 04/15/2015] [Accepted: 04/17/2015] [Indexed: 02/01/2023]
|