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Sanches VL, de Souza Mesquita LM, Viganó J, Contieri LS, Pizani R, Chaves J, da Silva LC, de Souza MC, Breitkreitz MC, Rostagno MA. Insights on the Extraction and Analysis of Phenolic Compounds from Citrus Fruits: Green Perspectives and Current Status. Crit Rev Anal Chem 2024; 54:1173-1199. [PMID: 35993795 DOI: 10.1080/10408347.2022.2107871] [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] [Indexed: 10/15/2022]
Abstract
Citrus fruits (CF) are highly consumed worldwide, fresh, processed, or prepared as juices and pies. To illustrate the high economic importance of CF, the global production of these commodities in 2021 was around 98 million tons. CF's composition is considered an excellent source of phenolic compounds (PC) as they have a large amount and variety. Since ancient times, PC has been highlighted to promote several benefits related to oxidative stress disorders, such as chronic diseases and cancer. Recent studies suggest that consuming citrus fruits can prevent some of these diseases. However, due to the complexity of citrus matrices, extracting compounds of interest from these types of samples, and identifying and quantifying them effectively, is not a simple task. In this context, several extractive and analytical proposals have been used. This review discusses current research involving CF, focusing mainly on PC extraction and analysis methods, regarding advantages and disadvantages from the perspective of Green Chemistry.
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Affiliation(s)
- Vitor L Sanches
- Multidisciplinary Laboratory of Food and Health (LabMAS), School of Applied Sciences (FCA), University of Campinas (UNICAMP), Limeira, São Paulo, Brazil
| | - Leonardo M de Souza Mesquita
- Multidisciplinary Laboratory of Food and Health (LabMAS), School of Applied Sciences (FCA), University of Campinas (UNICAMP), Limeira, São Paulo, Brazil
| | - Juliane Viganó
- Multidisciplinary Laboratory of Food and Health (LabMAS), School of Applied Sciences (FCA), University of Campinas (UNICAMP), Limeira, São Paulo, Brazil
- Centro de Ciências da Natureza, Universidade Federal de São Carlos, Buri, São Paulo, Brazil
| | - Letícia S Contieri
- Multidisciplinary Laboratory of Food and Health (LabMAS), School of Applied Sciences (FCA), University of Campinas (UNICAMP), Limeira, São Paulo, Brazil
| | - Rodrigo Pizani
- Multidisciplinary Laboratory of Food and Health (LabMAS), School of Applied Sciences (FCA), University of Campinas (UNICAMP), Limeira, São Paulo, Brazil
| | - Jaísa Chaves
- Multidisciplinary Laboratory of Food and Health (LabMAS), School of Applied Sciences (FCA), University of Campinas (UNICAMP), Limeira, São Paulo, Brazil
| | - Laíse Capelasso da Silva
- Multidisciplinary Laboratory of Food and Health (LabMAS), School of Applied Sciences (FCA), University of Campinas (UNICAMP), Limeira, São Paulo, Brazil
| | | | | | - Maurício A Rostagno
- Multidisciplinary Laboratory of Food and Health (LabMAS), School of Applied Sciences (FCA), University of Campinas (UNICAMP), Limeira, São Paulo, Brazil
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Celano R, Campone L, Pagano I, Carabetta S, Di Sanzo R, Rastrelli L, Piccinelli AL, Russo M. Characterisation of nutraceutical compounds from different parts of particular species of Citrus sinensis 'Ovale Calabrese' by UHPLC-UV-ESI-HRMS. Nat Prod Res 2018; 33:244-251. [PMID: 29473425 DOI: 10.1080/14786419.2018.1443102] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Consumers are aware of diet causing health problems and therefore there is an increased demand for natural ingredients that are expected to be safe and health-promoting. Many of these compounds belong to the class of flavonoids and can be divided into these five groups: flavanones, flavones, flavonols, flavanols, isoflavones and anthocyanidins. Extracts from citrus fruits are usually used as functional ingredients for several products. The aim of this paper was to develop an UHPLC-UV-ESI-HRMS method to define the metabolite profile of different parts of citrus fruit, of a particular cultivar called 'Ovale Calabrese', and in its main by-products. The high resolution mass spectrometry analysis allowed the identification of 27 compounds belonging to the classes of flavonoids and terpenoids. The high contents of phytochemical compounds, reveal the potential use of the 'Ovale Calabrese' as a rich source of nutraceutical compounds.
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Affiliation(s)
- Rita Celano
- a Department of Pharmacy , University of Salerno , Fisciano , Italy
| | - Luca Campone
- a Department of Pharmacy , University of Salerno , Fisciano , Italy.,b Department of Agriculture, Food Chemistry, Safety and Sensoromic Laboratory (FoCuSS Lab) , University Mediterranea of Reggio Calabria , Reggio Calabria , Italy
| | - Imma Pagano
- a Department of Pharmacy , University of Salerno , Fisciano , Italy
| | - Sonia Carabetta
- b Department of Agriculture, Food Chemistry, Safety and Sensoromic Laboratory (FoCuSS Lab) , University Mediterranea of Reggio Calabria , Reggio Calabria , Italy
| | - Rosa Di Sanzo
- b Department of Agriculture, Food Chemistry, Safety and Sensoromic Laboratory (FoCuSS Lab) , University Mediterranea of Reggio Calabria , Reggio Calabria , Italy
| | - Luca Rastrelli
- a Department of Pharmacy , University of Salerno , Fisciano , Italy
| | | | - Mariateresa Russo
- b Department of Agriculture, Food Chemistry, Safety and Sensoromic Laboratory (FoCuSS Lab) , University Mediterranea of Reggio Calabria , Reggio Calabria , Italy
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Gadeken DL, Casper DP. Evaluation of a high forage total mixed ration on the lactational performance of late lactation dairy cows. Transl Anim Sci 2017; 1:108-115. [PMID: 32704633 PMCID: PMC7205329 DOI: 10.2527/tas2016.0011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2016] [Accepted: 01/05/2017] [Indexed: 11/13/2022] Open
Abstract
Dairy producers continuously ask questions challenging the paradigm of how much forage can be included in the ration to meet the nutrient requirements of lactating dairy cows to support milk production. The production and feeding of forages having both high dry matter digestibility (DMD) and neutral detergent fiber digestibility (NDFd) are needed to increase nutrient supply. Mid- to late-lactation lactating Holstein dairy cows were blocked by parity (10 primiparous and 10 multiparous), milk production (range 33.9 to 56.6; μ = 41.5 kg/d), and days in milk (DIM) (range 140 to 287; μ = 225 d) and randomly assigned within blocks to 1 of 2 rations based on medium forage (MF) or high forage (HF) inclusion rates. A forage blend consisting of 60% second cutting (2012) alfalfa haylage and 40% (2012) corn silage blended on a DM basis and then fed at either 60% (MF) or 80% (HF) of the ration DM. The alfalfa haylage DM (DMD = 75.7%) and NDF (NDFd = 55.7%) digestibility was above average, but corn silage (DMD = 72.9, NDFd = 52.3%, and starch = 32.1%) was average. The experimental design was a randomized completed block design with 4 continuous weeks for data collection preceded by a 1 wk covariate data collection period in which all cows were fed the MF ration. Cows were milked 3 times/d and milk weights recorded at each milking and milk samples were collected at each milking once weekly for analysis of milk composition. Rations were similar in crude protein (CP; 16.4%), starch (20.1%), acid detergent fiber (ADF; 21.8%), and NDF (34.1%) concentrations. Covariately adjusted milk production (28.1 and 24.1 kg/d for MF and HF, respectively) and 4% fat-corrected milk (FCM; 27.6 and 24.1 kg/d) were significantly reduced by feeding the HF ration compared with cows fed the MF ration, while milk fat (3.98 and 4.0%), milk protein (3.11 and 3.17%), milk lactose (4.81 and 4.77%), and milk solids-not-fat (8.87 and 8.77%) percentages were similar for cows fed both rations. Cows on the HF ration demonstrated a significant reduction in DMI and a trend for decreased body weight (BW) when compared with cows fed the MF ration. The forage nutrient digestibility was not adequate to support the milk production of mid- to late-lactation dairy cows when fed at 80% of the DM. The forage nutrient digestibility when fed at very high inclusion rate (80%) could not meet the nutrient requirements of mid- to late-lactation dairy cows.
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Affiliation(s)
- D L Gadeken
- Purdue Extension-Vigo County, Terre Haute, IN 47807
| | - D P Casper
- Furst-McNess Company, Freeport, IL 61032
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Application and potential of capillary electroseparation methods to determine antioxidant phenolic compounds from plant food material. J Pharm Biomed Anal 2010; 53:1130-60. [PMID: 20719447 DOI: 10.1016/j.jpba.2010.07.028] [Citation(s) in RCA: 73] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2010] [Revised: 07/09/2010] [Accepted: 07/18/2010] [Indexed: 12/17/2022]
Abstract
Antioxidants are one of the most common active ingredients of nutritionally functional foods which can play an important role in the prevention of oxidation and cellular damage inhibiting or delaying the oxidative processes. In recent years there has been an increased interest in the application of antioxidants to medical treatment as information is constantly gathered linking the development of human diseases to oxidative stress. Within antioxidants, phenolic molecules are an important category of compounds, commonly present in a wide variety of plant food materials. Their correct determination is pivotal nowadays and involves their extraction from the sample, analytical separation, identification, quantification and interpretation of the data. The aim of this review is to provide an overview about all the necessary steps of any analytical procedure to achieve the determination of phenolic compounds from plant matrices, paying particular attention to the application and potential of capillary electroseparation methods. Since it is quite complicated to establish a classification of plant food material, and to structure the current review, we will group the different matrices as follows: fruits, vegetables, herbs, spices and medicinal plants, beverages, vegetable oils, cereals, legumes and nuts and other matrices (including cocoa beans and bee products). At the end of the overview, we include two sections to explain the usefulness of the data about phenols provided by capillary electrophoresis and the newest trends.
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Pellati F, Benvenuti S. Fast high-performance liquid chromatography analysis of phenethylamine alkaloids in Citrus natural products on a pentafluorophenylpropyl stationary phase. J Chromatogr A 2007; 1165:58-66. [PMID: 17675045 DOI: 10.1016/j.chroma.2007.07.041] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2007] [Revised: 07/17/2007] [Accepted: 07/20/2007] [Indexed: 11/17/2022]
Abstract
In this study, the chromatographic performance of a pentafluorophenylpropyl (PFPP) stationary phase was evaluated for the rapid separation of phenethylamine alkaloids (i.e. (+/-)-octopamine, (+/-)-synephrine, tyramine, N-methyltyramine and hordenine) in Citrus aurantium plant material (fruits and peel), various Citrus species, extracts and dietary supplements claiming to contain C. aurantium. The problems of phenethylamine alkaloid separation, such as peak tailing, low retention and low resolution, were successfully solved with this stationary phase. The parameters used for the method optimization included the mobile phase counter ion concentration and column temperature. A Discovery HS F5 column (150 mm x 4.6 mm i.d., 5 microm) was used, with an isocratic mobile phase composed of 10 mM ammonium acetate in 90:10 ACN-H(2)O (v/v), at a flow rate of 1.0 mL/min. The column temperature was set at 20 degrees C. The photodiode array detector monitored the eluent at 225 nm. The total analysis time was 10 min. The validation parameters, such as linearity, sensitivity, accuracy, precision and specificity, were found to be highly satisfactory. With a simple sample preparation procedure, different matrices were successfully analyzed for their alkaloid content. The results indicated that the products on sale, labeled as dietary supplements, vary widely in the quantitative composition of the active constituents: the amount of (+/-)-synephrine, the major alkaloid, in such products ranged from 0.65 to 27.41 mg/g. The other compounds were either not detected or were present at low levels. The developed method can be considered suitable for the quality control of Citrus plant material and commercial products.
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Affiliation(s)
- Federica Pellati
- Department of Pharmaceutical Sciences, University of Modena and Reggio Emilia, Via G. Campi 183, 41100 Modena, Italy.
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Pellati F, Benvenuti S. Chromatographic and electrophoretic methods for the analysis of phenethylamine [corrected] alkaloids in Citrus aurantium. J Chromatogr A 2007; 1161:71-88. [PMID: 17582424 DOI: 10.1016/j.chroma.2007.05.097] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2007] [Revised: 04/02/2007] [Accepted: 05/24/2007] [Indexed: 10/23/2022]
Abstract
Citrus aurantium (bitter orange) is a plant belonging to the family Rutaceae, whose fruit extracts have been used recently for the treatment of obesity. The most important biologically active constituents of the C. aurantium fruits are phenethylamine alkaloids (i.e. octopamine, synephrine, tyramine, N-methyltyramine and hordenine). Synephrine is a primary synthesis compound with pharmacological activities such as vasoconstriction, elevation of blood pressure and relaxation of bronchial muscle. Synephrine is present in the peel and the edible part of Citrus fruit. Of the adrenergic amines of natural origin, synephrine has been found to be the main constituent of C. aurantium fruits and extracts; the other alkaloids are either absent or present in only low concentrations. It is known that synephrine and the other amines found in C. aurantium have adverse effects on the cardiovascular system, owing to adrenergic stimulation. In light of the great commercial proliferation of C. aurantium herbal medicines in recent years, this review provides an overview of various extraction, separation and detection techniques employed for the qualitative and quantitative determination of the alkaloids in C. aurantium and related species. The application of chromatographic and electrophoretic methods for the separation and determination of these active components in C. aurantium plant material and derivatives are described. Since synephrine is a chiral compound, enantioselective chromatographic and electrophoretic techniques for the analysis of synephrine enantiomers in natural products are presented. Furthermore, examples of identification of these active compounds in complex matrices by hyphenated methods, such as gas chromatography-mass spectrometry and high-performance liquid chromatography-mass spectrometry, are described. The advantages and limitations of these separation and identification methods are assessed and discussed.
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Affiliation(s)
- Federica Pellati
- Department of Pharmaceutical Sciences, University of Modena and Reggio Emilia, Via G. Campi 183, 41100 Modena, Italy.
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Simionato AVC, Mauro Lanças F, Antônio Ruggiero M. Separation of Water‐Soluble Vitamins by Micellar Electrokinetic Capillary Chromatography in Pharmaceutical Samples. J LIQ CHROMATOGR R T 2007. [DOI: 10.1080/10826070500451889] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
| | - Fernando Mauro Lanças
- a Laboratory of Chromatography , Institute of Chemistry at São Carlos, University of São Paulo , São Carlos, SP, Brazil
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8
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Xiong S, Li J, Cheng J. Multicomponent Analysis of Highly Overlapped Capillary Electrophoretic Peaks Using Multiwave-Length Charge-Coupled Devices Detection. J LIQ CHROMATOGR R T 2006. [DOI: 10.1080/10826079608017146] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Shaoxiang Xiong
- a Department of Chemistry Wuhan , University Wuhan , 430072, People's Republic of China
| | - Jianjun Li
- a Department of Chemistry Wuhan , University Wuhan , 430072, People's Republic of China
| | - Jieke Cheng
- a Department of Chemistry Wuhan , University Wuhan , 430072, People's Republic of China
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Fatemi MH, Goudarzi N. Quantitative structure property relationship study of the electrophoretic mobilities of some benzoic acids derivatives in different carrier electrolyte compositions. Electrophoresis 2005; 26:2968-73. [PMID: 16007694 DOI: 10.1002/elps.200410343] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Quantitative structure-properties relationship (QSPR) has been applied to modeling and predicting the electrophoretic mobilities of a series of benzoic acid derivatives in different carrier electrolyte composition. Descriptors that were selected by stepwise multiple linear regression (MLR) technique are radial distribution function-lag8 (RDF-8), unweighted R-maximal autocorrelation geometry, topology and atomic weight assembly-lag4 (R-GETAWAY-4), geometrical descriptor lag-26 (GEO-26), and the overall dielectric constant of the carrier electrolyte. These descriptors were used as inputs for generated 4-7-1 artificial neural network (ANN). The results obtained using ANN and MLR were compared as well as with the experimental values and showed the superiority of ANN over MLR model. Also the appearance of these descriptors in QSPR models reveals the role of electronic and steric interactions in solutes mobility in capillary electrophoresis due to the dielectric and hydrodynamic friction forces.
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Abstract
Food authenticity is a term which simply refers to whether the food purchased by the consumer matches its description. False description can occur in many forms, from the undeclared addition of water or other cheaper materials, or the wrong declaration of the amount of a particular ingredient in the product, to making false statements about the source of ingredients i.e., their geographic, plant, or animal origin. The aim of this review is to summarize applications of capillary electrophoresis in food authentication.
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Affiliation(s)
- Frantisek Kvasnicka
- Institute of Chemical Technology, Department of Food Preservation and Meat Technology, Technicka 3, 16628 Prague 6, Czech Republic.
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Dadáková E, Procházková E, Krízek M. Application of micellar electrokinetic capillary chromatography for quantitative analysis of quercetin in plant materials. Electrophoresis 2001; 22:1573-8. [PMID: 11386672 DOI: 10.1002/1522-2683(200105)22:8<1573::aid-elps1573>3.0.co;2-b] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
A simple method for the routine determination of quercetin in biological samples was developed. The method consists of hydrolysis of bonded quercetin, its isolation and preconcentration on solid-phase extraction (SPE) column and a final analytical step using micellar electrokinetic capillary chromatography. The working range, linear range, the limit of quantification, and the measurement uncertainty were tested in validation. The method is suitable for quercetin determination in fruit and vegetable samples.
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Affiliation(s)
- E Dadáková
- Department of Chemistry, Faculty of Agriculture, University of South Bohemia, Ceské Budejovice, Czech Republic.
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Kanitsar K, Arce L, Ríos A, Valcárcel M. Determination of phenolic constituents in citrus samples by on-line coupling of a flow system with capillary electrophoresis. Electrophoresis 2001; 22:1553-60. [PMID: 11386669 DOI: 10.1002/1522-2683(200105)22:8<1553::aid-elps1553>3.0.co;2-f] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Phenolic compounds extracted from different citrus were determined. Calibration, extraction, elution, and introduction into the sample vial was carried out automatically by a continuous flow system (CFS) coupled to capillary electrophoresis (CE) equipment via a programmable arm. The only manual operation was the centrifugation of the sample to remove the pulp. The supernatant solutions were introduced into the CFS-CE system. A C-18 minicolumn coupled into the CFS was used to perform cleanup of the samples. The analytes were eluted from the minicolumn using methanol. Quantitative analysis was carried out by the standard addition method. The method presented allows a fast, quantitative, and reproducible determination of six main phenolic compounds in citrus samples, with precision in the range of 3.0-6.5%, expressed as relative standard deviations.
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Affiliation(s)
- K Kanitsar
- Institute of Analytical Chemistry, Vienna University of Technology, Austria
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Dadáková E, Procházková E, Křížek M. Application of micellar electrokinetic capillary chromatography for quantitative analysis of quercetin in plant materials. Electrophoresis 2001. [DOI: 10.1002/1522-2683(200105)22:8%3c1573::aid-elps1573%3e3.0.co;2-b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Klampfl CW, Buchberger W, Haddad PR. Determination of organic acids in food samples by capillary zone electrophoresis. J Chromatogr A 2000; 881:357-64. [PMID: 10905719 DOI: 10.1016/s0021-9673(00)00171-0] [Citation(s) in RCA: 63] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
A comprehensive survey of the use of capillary zone electrophoresis for the determination of organic acids in food and beverage samples is presented. The analytes discussed in this paper include low-molecular-mass organic acids, amino acids, vitamin related compounds and free fatty acids.
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Affiliation(s)
- C W Klampfl
- Department of Analytical Chemistry, Johannes-Kepler-University, Linz, Austria
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Abstract
A review of the applications of electrophoresis to the determination of various compounds in beverage samples, namely beer, hard drinks, juice, milk, soft drinks, tea and wine, is presented.
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Affiliation(s)
- J Sádecká
- Department of Analytical Chemistry, Slovak University of Technology, Bratislava, Slovak Republic
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17
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Klampfl CW. Analysis of organic acids and inorganic anions in different types of beer using capillary zone electrophoresis. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 1999; 47:987-990. [PMID: 10552402 DOI: 10.1021/jf9808168] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Two methods for the investigation of different types of beer by capillary zone electrophoresis are presented. The first separation system described in this work allows the quantitative analysis of beers with respect to their contents of low molecular mass anionic components using indirect ultraviolet detection as well as conductivity detection, providing relative standard deviation between 0.5 and 6.6% for the peak areas and excellent limits of detection (LOD) ranging from 0.02 mg L(-)(1) for chloride to 0.41 mg L(-)(1) for phosphate. The second method offers the possibility of fast determination of amino acids in beer samples without the necessity of any sample pretreatment. LODs obtained for the investigated solutes were found to be strongly dependent on their spectroscopical properties and in the range of 0.5-50 mg L(-)(1). Despite this restriction, this analytical method can be regarded as a suitable tool for the screening of beers with respect to their amino acid patterns.
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Affiliation(s)
- C W Klampfl
- Department of Analytical Chemistry, Johannes-Kepler-University Linz, Altenbergerstrasse 69, A-4040 Linz, Austria.
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18
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Klampfl CW, Buchberger W, Turner M, Fritz JS. Determination of underivatized amino acids in beverage samples by capillary electrophoresis. J Chromatogr A 1998. [DOI: 10.1016/s0021-9673(98)00047-8] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Mouly P, Gaydou EM, Auffray A. Simultaneous separation of flavanone glycosides and polymethoxylated flavones in citrus juices using liquid chromatography. J Chromatogr A 1998; 800:171-9. [PMID: 9561761 DOI: 10.1016/s0021-9673(97)01131-x] [Citation(s) in RCA: 137] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
We present a simultaneous liquid chromatographic method for the separation of two flavonoid compound families, flavanone glycosides (FGs) and polymethoxylated flavones (PMFs), which are usually found in citrus fruits species and varieties. This technique permits the quantitation of six FGs (narirutin, naringin, hesperidin, neohesperidin, didymin, poncirin) and six PMFs (sinensetin, hexamethoxyflavone, nobiletin, scutellarein, heptamethoxyflavone and tangeretin). This technique, to be used to characterize a citrus juice by its polyphenolic profile, has been applied to the determination of flavonoid compounds in grapefruit- and orange juice. Differentiation of orange juice varieties and mixtures containing tangor juice using polyphenolic profiles and flavonoid content has been achieved.
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Affiliation(s)
- P Mouly
- Centre de Recherche et de Valorisation des Produits de Consommation, Parc Cub des Aygalades, Marseille, France
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Procházková A, Krivánková L, Bocek P. Quantitative trace analysis of L-ascorbic acid in human body fluids by on-line combination of capillary isotachophoresis and zone electrophoresis. Electrophoresis 1998; 19:300-4. [PMID: 9548295 DOI: 10.1002/elps.1150190226] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
On-line combination of capillary isotachophoresis and zone electrophoresis performed in two coupled capillaries (ITP-CZE) is used for the trace analysis of L-ascorbic acid in human serum, urine and stomach fluid. At the ITP stage, anionic sample components are separated into individual zones and macrocomponents are detected and driven out of the migration path. In the CZE stage, only a small segment of the sample zones containing L-ascorbic acid is analyzed. High sensitivity of this hyphenated method (limit of detection, 0.09-0.15 mg/L), low sample volume consumption (2 microL), and acceptable reproducibility of the results (relative standard deviation, 8%) in the concentration range 0.1-15 mg/L demonstrate that the method is applicable for the study of the relation between the content of L-ascorbic acid in body fluids and the state of health of a person, in which lower amounts of L-ascorbic acid than the normal levels (i.e., 5.1-15.1 mg/L in human serum and 12.5-26.8 mg/L in urine) are expected. Possible interferences of other components of the body fluids are excluded by good correlation of the results obtained by the ITP-CZE method and a routine colorimetric method.
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Affiliation(s)
- A Procházková
- Institute of Analytical Chemistry, Academy of Sciences of the Czech Republic, Brno
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21
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Salimi-Moosavi H, Cassidy R. Selectivity control in the non-aqueous capillary electrophoretic separation of amino acids. J Chromatogr A 1997. [DOI: 10.1016/s0021-9673(97)00757-7] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Abstract
The current status in the analysis of amino acids using capillary electrophoresis is addressed. This area of biological analysis has received increased attention with more than 200 articles being published in the last five years. This review discusses pre-, post-, and on-column derivatization techniques used to tag amino acids providing a detectable moiety. Several separation methodologies which provided resolution for large sets of amino acids are presented. An overview of advances in the enantiomeric resolution methodologies for amino acids is given. Both direct and indirect enantiomeric separation schemes are summarized. Recent advances in detection strategies for both derivatized and underivatized amino acids are presented. Applications utilizing amino acid analysis by capillary electrophoresis are described. This review covers articles published between 1991 and 1996.
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Affiliation(s)
- J T Smith
- Department of Physical Sciences, Southeastern Oklahoma State University, Durant 74701-0609, USA.
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Chapter 9 Capillary electrophoresis: Principles and applications. ACTA ACUST UNITED AC 1997. [DOI: 10.1016/s0167-9244(97)80018-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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Horie H, Mukai T, Kohata K. Simultaneous determination of qualitatively important components in green tea infusions using capillary electrophoresis. J Chromatogr A 1997. [DOI: 10.1016/s0021-9673(96)00764-9] [Citation(s) in RCA: 113] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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