1
|
Dai J, Zhong Y, Zhu J, Liu X, Zhang T, Zhu D, Li G, Wang Z, Liu H. Modulation of copper sites in porphyrin metal-organic frameworks for electrochemical ascorbic acid sensing. Chem Commun (Camb) 2024; 60:6749-6752. [PMID: 38863312 DOI: 10.1039/d4cc01961j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2024]
Abstract
Two metal-organic frameworks (MOFs) with different Cu-centered coordination structures were synthesized. By introducing 4,4-bipyridine as a linker in the Cu-MOFs, we have discovered that Cu-O, instead of Cu-N, is the active site with higher electrocatalytical activity towards ascorbic acid, which is essential to understand and develop Cu-based ascorbic acid sensors.
Collapse
Affiliation(s)
- Jiawei Dai
- School of Chemistry and Chemical Engineering, Hubei Key Laboratory of Material Chemistry and Service Failure, Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education), Huazhong University of Science and Technology (HUST), 1037 Luoyu Rd, Wuhan 430074, China.
| | - Yanyu Zhong
- School of Chemistry and Chemical Engineering, Hubei Key Laboratory of Material Chemistry and Service Failure, Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education), Huazhong University of Science and Technology (HUST), 1037 Luoyu Rd, Wuhan 430074, China.
| | - Jiannan Zhu
- School of Chemistry and Chemical Engineering, Hubei Key Laboratory of Material Chemistry and Service Failure, Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education), Huazhong University of Science and Technology (HUST), 1037 Luoyu Rd, Wuhan 430074, China.
| | - Xiaoling Liu
- School of Chemistry and Chemical Engineering, Hubei Key Laboratory of Material Chemistry and Service Failure, Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education), Huazhong University of Science and Technology (HUST), 1037 Luoyu Rd, Wuhan 430074, China.
| | - Tiansui Zhang
- School of Chemistry and Chemical Engineering, Hubei Key Laboratory of Material Chemistry and Service Failure, Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education), Huazhong University of Science and Technology (HUST), 1037 Luoyu Rd, Wuhan 430074, China.
| | - Deyu Zhu
- School of Chemistry and Chemical Engineering, Hubei Key Laboratory of Material Chemistry and Service Failure, Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education), Huazhong University of Science and Technology (HUST), 1037 Luoyu Rd, Wuhan 430074, China.
| | - Guangfang Li
- School of Chemistry and Chemical Engineering, Hubei Key Laboratory of Material Chemistry and Service Failure, Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education), Huazhong University of Science and Technology (HUST), 1037 Luoyu Rd, Wuhan 430074, China.
| | - Zhengyun Wang
- School of Chemistry and Chemical Engineering, Hubei Key Laboratory of Material Chemistry and Service Failure, Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education), Huazhong University of Science and Technology (HUST), 1037 Luoyu Rd, Wuhan 430074, China.
| | - Hongfang Liu
- School of Chemistry and Chemical Engineering, Hubei Key Laboratory of Material Chemistry and Service Failure, Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education), Huazhong University of Science and Technology (HUST), 1037 Luoyu Rd, Wuhan 430074, China.
| |
Collapse
|
2
|
Zhang H, Liang F, Li S, Zong F, Xu Y. A high-performance photoelectrochemical sensor based on CdS-Au composite nanomaterials and localized surface plasmon resonance for ultrasensitive detection of ascorbic acid. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2024; 16:1175-1184. [PMID: 38305434 DOI: 10.1039/d3ay02007j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2024]
Abstract
Ascorbic acid (AA), which plays a vital role in the metabolism of the human body, is closely correlated with various diseases, including rheumatoid arthritis, scurvy, Parkinson's disease, urinary stones, and diarrhea. The detection of AA is of great significance for early prevention and diagnosis of related diseases. In this paper, a high-performance photoelectrochemical (PEC) sensor was constructed based on cadmium sulfide-gold (CdS-Au) composite nanomaterials for ultrasensitive ascorbic acid (AA) detection. Due to the localized surface plasmon resonance (LSPR) effect of gold nanoparticles (AuNPs), the PEC performance of CdS-Au composite nanomaterials was significantly improved compared to CdS semiconductor nanomaterials. Under the optimal conditions, the AA concentration was linearly related to the photocurrent signal in the range of 0.01 μM-200 μM, with the detection limit being 0.2 nM (S/N = 3) and the sensitivity being 642.9 μA mM-1 cm-2. In addition, the mechanism of the PEC sensor based on CdS-Au composite nanomaterials for ultrasensitive AA detection was discussed. Lastly, the self-constructed PEC sensors have been successfully applied in detecting AA in vitamin C tablets and actual blood samples, meeting the detection criteria required by the Chinese Pharmacopoeia (CP, 2020 edition). The self-fabricated PEC sensors in this paper are expected to be used for quality assessment of AA-related drugs and diagnosis of relevant diseases.
Collapse
Affiliation(s)
- Hongfen Zhang
- School of Pharmacy, Shanxi Medical University, Jinzhong 030619, Shanxi, China.
| | - Fangmiao Liang
- School of Pharmacy, Shanxi Medical University, Jinzhong 030619, Shanxi, China.
| | - Sihan Li
- School of Pharmacy, Shanxi Medical University, Jinzhong 030619, Shanxi, China.
| | - Feifei Zong
- School of Pharmacy, Shanxi Medical University, Jinzhong 030619, Shanxi, China.
| | - Yanrui Xu
- School of Pharmacy, Shanxi Medical University, Jinzhong 030619, Shanxi, China.
| |
Collapse
|
3
|
Wang X, Sun M, Liu L. On the construction and performance of pre-oxidized probe inserted into charged MOF for the in vitro vitamin C detection: A highly selective emission turn-on sensing. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 297:122705. [PMID: 37087814 DOI: 10.1016/j.saa.2023.122705] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Accepted: 04/02/2023] [Indexed: 05/03/2023]
Abstract
Owing to the critical role of ascorbic acid (vitamin C, VC) in human bio-activities as an antioxidant and free radical scavenger, the development for an easy and fast VC detection has always been pushed. In this work, a traditional ligand bipyridine (bpy) was firstly oxidized (denoted as bpy-O) and then coordinated to Eu(III) (denoted as Eu-bpy-O). Due to the oxidization of bpy N atoms, which led to improper triplet ligand energy level and increased ligand-to-Eu distance, the efficient ligand energy transfer (ET) to Eu(III) was suspended, resulting in a low emission quantum yield of 1.6%. Upon being deoxidized by VC, the ligand ET to Eu(III) became efficient, with emission quantum yield recovered to 22.4%, showing emission turn-on effect for VC. To allow smooth analyte dispersion and uniform probe distribution, Eu-bpy-O was loaded into the micropores of bio-MOF-1 (Eu-bpy-O@MOF) with various doping levels. Good sensing selectivity was observed owing to the well-designed probe and bio-MOF-1 sieving effect. Linear fitting equations were obtained for the optimal sample named 5Eu-bpy-O@MOF within VC concentration region of 0-100 μM, showing LOD of 1.7 μM, sensitivity of 0.191 μM-1, and response time of ∼240 s at 35 °C. The practical sensing performance of 5Eu-bpy-O@MOF was confirmed by its sensing plates upon human serum samples. The novelty of this work was the application of a pre-oxidized probe and a porous host, which offered emission "turn-on" effect for VC with promising performance.
Collapse
Affiliation(s)
- Xue Wang
- Jilin Engineering Normal University, No.3050 Kaixuan Road, Changchun City, Jilin Province 130052, PR China
| | - Meng Sun
- Jilin Engineering Normal University, No.3050 Kaixuan Road, Changchun City, Jilin Province 130052, PR China
| | - Liang Liu
- School of Materials Science & Engineering, Jiangsu University, Zhenjiang 212013, PR China.
| |
Collapse
|
4
|
Lan W, Hai C, Shi Q, Wang S, Deng G, Chen H, Wang Y, Yang J, Fu H. An inner filter effect-based nitrogen-doped carbon dots-CoOOH nanoflakes fluorescence probe for detection of ascorbic acid by chemical redox modulation. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2022; 102:6658-6667. [PMID: 35608930 DOI: 10.1002/jsfa.12033] [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: 07/27/2021] [Revised: 04/19/2022] [Accepted: 05/24/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND Ascorbic acid (AA) is an essential nutrient for humans, which must be obtained from vegetables, fruits, and other foods. The content of AA has become an important standard to evaluate the quality and nutritional value of food. The fluorescence sensing method based on nanomaterials is a good alternative for the rapid detection of AA. In this study, we developed an inner filter effect-based fluorescent probe that hybridized nitrogen-doped carbon dots (NCDs) with cobalt oxyhydroxide nanoflakes (CoOOH NFs). RESULTS An optimal NCDs was successfully selected because it has a strong fluorescence at 430 nm and the most significant quenching phenomenon with CoOOH NFs due to the inner filter effect. When adding AA into the NCDs-CoOOH NFs probe solution, a specific redox reaction will occur between the enediol group of AA and the CoOOH NFs to interfere with the quenching ability of CoOOH NFs and recover the fluorescence of NCDs. The recovered fluorescence intensities demonstrated a linear relationship with the concentrations of AA. The assay based on the NCDs-CoOOH NFs probe allows AA to be tested in a wide range of 5-200 μmol L-1 with a detection limit of 2.31 nmol L-1 . Furthermore, to evaluate its practical application, the NCDs-CoOOH NFs fluorescence probe was utilized to analyze AA in vegetable, fruit, and serum matrixes with satisfactory results. CONCLUSION An inner filter effect-based fluorescence probe for the rapid detection of AA was developed, and it has a good potential to be applied in both food and clinical testing. © 2022 Society of Chemical Industry.
Collapse
Affiliation(s)
- Wei Lan
- The Modernization Engineering Technology Research Center of Ethnic Minority Medicine of Hubei Province, School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan, P. R. China
| | - Chengying Hai
- The Modernization Engineering Technology Research Center of Ethnic Minority Medicine of Hubei Province, School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan, P. R. China
| | - Qiong Shi
- The Modernization Engineering Technology Research Center of Ethnic Minority Medicine of Hubei Province, School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan, P. R. China
| | - Shuo Wang
- The Modernization Engineering Technology Research Center of Ethnic Minority Medicine of Hubei Province, School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan, P. R. China
| | - Gaoqiong Deng
- The Modernization Engineering Technology Research Center of Ethnic Minority Medicine of Hubei Province, School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan, P. R. China
| | - Hengye Chen
- The Modernization Engineering Technology Research Center of Ethnic Minority Medicine of Hubei Province, School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan, P. R. China
| | - Youyou Wang
- National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China
| | - Jian Yang
- National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China
| | - Haiyan Fu
- The Modernization Engineering Technology Research Center of Ethnic Minority Medicine of Hubei Province, School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan, P. R. China
| |
Collapse
|
5
|
Gold Nanoparticles/Carbon Nanotubes and Gold Nanoporous as Novel Electrochemical Platforms for L-Ascorbic Acid Detection: Comparative Performance and Application. CHEMOSENSORS 2021. [DOI: 10.3390/chemosensors9080229] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Herein, the effects of nanostructured modifications of a gold electrode surface in the development of electrochemical sensors for L-ascorbic acid detection have been investigated. In particular, a bare gold electrode has been modified by electrodeposition of gold single-walled carbon nanotubes (Au/SWCNTs) and by the formation of a highly nanoporous gold (h-nPG) film. The procedure has been realized by sweeping the potential between +0.8 V and 0 V vs. Ag/AgCl for 25 scans in a suspension containing 5 mg/mL of SWCNTs in 10 mM HAuCl4 and 2.5 M NH4Cl solution for Au/SWCNTs modified gold electrode. A similar procedure was applied for a h-nPG electrode in a 10 mM HAuCl4 solution containing 2.5 M NH4Cl, followed by applying a fixed potential of −4 V vs. Ag/AgCl for 60 s. Cyclic voltammetry and electrochemical impedance spectroscopy were used to characterize the properties of the modified electrodes. The developed sensors showed strong electrocatalytic activity towards ascorbic acid oxidation with enhanced sensitivities of 1.7 × 10−2 μA μM−1cm−2 and 2.5 × 10−2 μA μM−1cm−2 for Au/SWCNTs and h-nPG modified electrode, respectively, compared to bare gold electrode (1.0 × 10−2 μA μM−1cm−2). The detection limits were estimated to be 3.1 and 1.8 μM, respectively. The h-nPG electrode was successfully used to determine ascorbic acid in human urine with no significant interference and with satisfactory recovery levels.
Collapse
|
6
|
Gao J, Liu H, Wu K, Yan J, Tong C. A novel nonenzymatic ascorbic acid electrochemical sensor based on gold nanoparticals-chicken egg white-copper phosphate-graphene oxide hybrid nanoflowers. NANOTECHNOLOGY 2021; 32:325504. [PMID: 33951620 DOI: 10.1088/1361-6528/abfe28] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Accepted: 05/05/2021] [Indexed: 06/12/2023]
Abstract
Au-CEW-Cu3(PO4)2-GO nanoflowers (HNFs), which were assembled of gold nanoparticals (Au NPs), chicken egg white (CEW), copper phosphate (Cu3(PO4)2) and graphene oxide (GO) together to form a flower-like organic/inorganic hybrid nanocomposite, were synthesized through a simple and gentle one-pot co-precipitation method. The prepared samples were well characterized by scanning electron microscope, transmission electron microscope, energy dispersive x-ray spectrometer, x-ray diffraction and Raman spectrometer. The prepared Au-CEW-Cu3(PO4)2-GO HNFs was used to modify glassy carbon electrode to fabricate an electrochemical sensor for detection of ascorbic acid (AA). The electrochemical test results show that the linear range of the developed sensor is 8-300μM and the detection limit is 2.67μM (S/N = 3). While this sensor displays high sensitivity of 6.01 × 10-3μAμM-1cm-2and low detection potential of 35 mV due to the combination of the high conductivity of Au NPs, the larger specific surface area of GO and the intrinsic electrocatalytic activity of CEW-Cu3(PO4)2HNFs. Moreover, the Au-CEW-Cu3(PO4)2-GO HNFs-based sensor was successfully developed for application in electrochemical detection of AA in vitamin C tablets.
Collapse
Affiliation(s)
- Jiaojiao Gao
- School of Materials Science and Engineering, Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, Shaanxi University of Science and Technology, Xi'an 710021, People's Republic of China
- College of Chemistry and Chemical Engineering, Yan'an University, Yan'an 716000, People's Republic of China
| | - Hui Liu
- School of Materials Science and Engineering, Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, Shaanxi University of Science and Technology, Xi'an 710021, People's Republic of China
| | - Kexin Wu
- School of Materials Science and Engineering, Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, Shaanxi University of Science and Technology, Xi'an 710021, People's Republic of China
| | - Jifeng Yan
- School of Materials Science and Engineering, Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, Shaanxi University of Science and Technology, Xi'an 710021, People's Republic of China
| | - Cheng Tong
- School of Materials Science and Engineering, Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, Shaanxi University of Science and Technology, Xi'an 710021, People's Republic of China
| |
Collapse
|
7
|
Abera H, Abdisa M, Washe AP. Spectrophotometric method to the determination of ascorbic acid in M. stenopetala leaves through catalytic titration with hexavalent chromium and its validation. INTERNATIONAL JOURNAL OF FOOD PROPERTIES 2020. [DOI: 10.1080/10942912.2020.1775249] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Habtamu Abera
- Chemistry Department, Dilla College of Teacher Education, Dilla, Ethiopia
| | - Mitiku Abdisa
- Chemistry Department, Dilla University, Dilla, Ethiopia
| | | |
Collapse
|
8
|
Wang QB, Zhang CJ, Yu H, Zhang X, Lu Q, Yao JS, Zhao H. The sensitive “Turn-on” fluorescence platform of ascorbic acid based on conjugated polymer nanoparticles. Anal Chim Acta 2020; 1097:153-160. [DOI: 10.1016/j.aca.2019.10.076] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2019] [Revised: 10/10/2019] [Accepted: 10/31/2019] [Indexed: 01/31/2023]
|
9
|
Dhara K, Debiprosad RM. Review on nanomaterials-enabled electrochemical sensors for ascorbic acid detection. Anal Biochem 2019; 586:113415. [DOI: 10.1016/j.ab.2019.113415] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2019] [Revised: 08/31/2019] [Accepted: 08/31/2019] [Indexed: 02/08/2023]
|
10
|
Direct electroiodimetric sensing of reducing biomolecules using a modified multiwall carbon nanotube/ionic liquid paste electrode by tetra-n-octylammonium triiodide. Electrochim Acta 2018. [DOI: 10.1016/j.electacta.2018.09.125] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
11
|
Facile green synthesis of reduced graphene oxide/tin oxide composite for highly selective and ultra-sensitive detection of ascorbic acid. J Electroanal Chem (Lausanne) 2018. [DOI: 10.1016/j.jelechem.2018.03.033] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
|
12
|
Yin Y, Zhao J, Qin L, Yang Y, He L. Synthesis of an ordered nanoporous Fe2O3/Au film for application in ascorbic acid detection. RSC Adv 2016. [DOI: 10.1039/c6ra12145d] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
Ordered nanoporous Fe2O3/Au film was synthesized and used as an effective non-enzymatic sensor for detection of ascorbic acid.
Collapse
Affiliation(s)
- Yingying Yin
- School of Physical Science and Technology
- Southwest University
- Chongqing 400715
- P. R. China
| | - Jianwei Zhao
- School of Physical Science and Technology
- Southwest University
- Chongqing 400715
- P. R. China
| | - Lirong Qin
- School of Physical Science and Technology
- Southwest University
- Chongqing 400715
- P. R. China
| | - Yu Yang
- School of Physical Science and Technology
- Southwest University
- Chongqing 400715
- P. R. China
| | - Lizhong He
- School of Physical Science and Technology
- Southwest University
- Chongqing 400715
- P. R. China
| |
Collapse
|
13
|
Xu Q, Bi L, Zheng H, Fan D, Wang W. PDMS-based gold electrode for sensing ascorbic acid. Colloids Surf B Biointerfaces 2011; 88:362-5. [DOI: 10.1016/j.colsurfb.2011.07.014] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2011] [Revised: 05/10/2011] [Accepted: 07/05/2011] [Indexed: 11/30/2022]
|
14
|
Comparison of Pt and Ni foil electrodes for amperometric sensing of ascorbic acid. J Electroanal Chem (Lausanne) 2011. [DOI: 10.1016/j.jelechem.2010.11.031] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
15
|
Rapid Determination of Ascorbic Acid in Fresh Vegetables and Fruits with Electrochemically Treated Screen-Printed Carbon Electrodes. ACTA ACUST UNITED AC 2011. [DOI: 10.1007/978-3-642-18336-2_28] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
|
16
|
Rodrigues JA, Valente IM, Gonçalves LM, Pacheco JG, Barros AA. Polarographic determination of vitamin C after derivatization with o-phenylenediamine. ACTA ACUST UNITED AC 2010. [DOI: 10.1135/cccc2010026] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
A differential pulse polarographic (DPP) method has been developed for the determination of ascorbic acid (AA) and dehydroascorbic acid (DHA), the two main forms of Vitamin C. The method consists of the DPP analysis of a quinoxaline obtained by the derivatization of DHA with o-phenylenediamine. Results using the proposed method correlated well with those obtained by two reference methodologies: the common iodometric method and a published chromatographic methodology. It was also used in the study of Vitamin C degradation in fruit juices, showing that it involves an initial oxidation of AA to DHA, followed by hydrolytic degradation of the latter.
Collapse
|
17
|
|
18
|
Burini G. Development of a quantitative method for the analysis of total l-ascorbic acid in foods by high-performance liquid chromatography. J Chromatogr A 2007; 1154:97-102. [PMID: 17449040 DOI: 10.1016/j.chroma.2007.03.013] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2006] [Revised: 02/24/2007] [Accepted: 03/05/2007] [Indexed: 11/23/2022]
Abstract
A new method has been developed for the determination of total vitamin C in foods. The method requires less time than the traditional methodologies and uses a radical oxidation of L-ascorbic acid (AA) to obtain dehydro-L-ascorbic acid (DHAA) by means of a peroxyl radical generated in situ by thermal decomposition of an azo-compound, 2,2'-azobis(2-amidinopropane) dihydrochloride (AAPH). The dehydro-L-ascorbic acid is condensed with benzene-1,2-diamine (o-phenylenediamine, OPDA) to form its highly fluorescent quinoxaline derivative, 3-(1,2-dihydroxyethyl)furo[3,4-b]quinoxaline-1-one (DFQ), which is then separated on a C(18) column eluted with a mobile phase of 80 mM phosphate buffer and methanol at pH=7.8 and detected fluorometrically at lambda(ex)=355 nm and lambda(em)=425 nm. The reaction conditions for the complete conversion of AA to DFQ were 56 degrees C, 36 min and a mumol AAPH/AA ratio of 60. The sample, extracted with an aqueous metaphosphoric acid solution, was analyzed after being filtered through a 0.45 microm membrane. The method has shown good repeatability, sensitivity and accuracy compared to the results obtained with the reference method. The response of the detection system was linear within a range of 0.5-8.0 microg/mL with a correlation coefficient of 0.9997. The limit of detection was 0.27 microg/mL and the limit of quantification was 0.83 microg/mL. The AA contents of some selected foods were analyzed.
Collapse
Affiliation(s)
- Giovanni Burini
- Department of Internal Medicine, Section of Applied Biochemistry and Nutritional Sciences, University of Perugia, Via San Costanzo, 06126 - Perugia, Italy.
| |
Collapse
|
19
|
Rassam M, Laing W. Variation in ascorbic acid and oxalate levels in the fruit of Actinidia chinensis tissues and genotypes. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2005; 53:2322-6. [PMID: 15769175 DOI: 10.1021/jf048197s] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Ascorbic acid and total oxalate were measured in fruit from six genotypes of Actinidia chinensis. Ascorbic acid was separated from oxalate in fruit extracts by HPLC and quantified from absorbance at 245 nm, whereas oxalate was measured enzymatically in the HPLC eluate. Levels of whole fruit mean ascorbic acid in the different genotypes ranged from 98 to 163 mg/100 g of fresh weight (FW), whereas mean oxalate varied between 18 and 45 mg/100 g of FW. Ascorbic acid was highest in the inner and outer pericarp, whereas oxalate was concentrated in the skin, inner pericarp, and seed. Essentially no ascorbic acid was found in the seed. Each tissue clustered separately when the tissue ascorbic acid and oxalate data were normalized to the whole fruit level of ascorbic acid and oxalate in that genotype and plotted against each other, suggesting that oxalate is not a sink for excess ascorbic acid but that oxalate formation is regulated.
Collapse
Affiliation(s)
- Maysoon Rassam
- GeneTech, The Horticulture and Food Research Institute of New Zealand, P.B. 92169, Auckland, New Zealand.
| | | |
Collapse
|
20
|
Affiliation(s)
- Rosa M de Lederkremer
- CIHIDECAR, Departamento de Química Orgánica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellón II, Ciudad Universitaria, 1428 Buenos Aires, Argentina
| | | |
Collapse
|
21
|
IIDA Y, SATOH T, SATOH I. Application of an Electrolytic Device to an FIA System for Extension of the Determination Range of l-Ascorbic Acid. ELECTROCHEMISTRY 2002. [DOI: 10.5796/electrochemistry.70.515] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- Yasuhiro IIDA
- Department of Applied Chemistry, Faculty of Engineering, Kanagawa Institute of Technology
| | - Takuto SATOH
- Department of Applied Chemistry, Faculty of Engineering, Kanagawa Institute of Technology
| | - Ikuo SATOH
- Department of Applied Chemistry, Faculty of Engineering, Kanagawa Institute of Technology
| |
Collapse
|