1
|
Keskin E, Allahverdiyeva S, Yardım Y. WITHDRAWN: Electroanalytical investigation and voltammetric quantification of daidzein at a non-modified boron-doped diamond electrode in the existence of cationic surfactant. Microchem J 2020. [DOI: 10.1016/j.microc.2020.104771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
2
|
Sun J, Shi J, Mu Y, Zhou S, Chen Z, Xu B. Subcritical butane extraction of oil and minor bioactive components from soybean germ: Determination of migration patterns and a kinetic model. J FOOD PROCESS ENG 2018. [DOI: 10.1111/jfpe.12697] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jun Sun
- School of Food and Biological Engineering; Jiangsu University; Zhenjiang 212013 China
| | - Jiachen Shi
- School of Food and Biological Engineering; Jiangsu University; Zhenjiang 212013 China
| | - Yaoyao Mu
- School of Food and Biological Engineering; Jiangsu University; Zhenjiang 212013 China
| | - Shilong Zhou
- School of Food and Biological Engineering; Jiangsu University; Zhenjiang 212013 China
| | - Zhongwei Chen
- School of Food and Biological Engineering; Jiangsu University; Zhenjiang 212013 China
| | - Bin Xu
- School of Food and Biological Engineering; Jiangsu University; Zhenjiang 212013 China
| |
Collapse
|
3
|
Xiao W, Zhang Q, Chen C, Zhang QH, Hu YJ, Xia ZN, Yang FQ. Analysis of Eight Isoflavones in Radix Puerariae by MEEKC: Comparison on Three Different Oil Phases. J Chromatogr Sci 2016; 54:1678-1686. [DOI: 10.1093/chromsci/bmw097] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2015] [Revised: 02/17/2016] [Indexed: 11/12/2022]
|
4
|
Nucci-Martins C, Nascimento LF, Venzke D, Brethanha LC, Sako AVF, Oliveira AS, Brighente IMC, Micke GA, Pizzolatti MG, Santos ARS. Antinociceptive effect of hydroalcoholic extract and isoflavone isolated from Polygala molluginifolia in mice: evidence for the involvement of opioid receptors and TRPV1 and TRPA1 channels. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2016; 23:429-440. [PMID: 27064002 DOI: 10.1016/j.phymed.2016.02.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2015] [Revised: 01/21/2016] [Accepted: 02/02/2016] [Indexed: 06/05/2023]
Abstract
PURPOSE The plants of the genus Polygala (Polygalaceae) have been used for a long time in folk medicine to treat pain and inflammation. The species Polygala molluginifolia is native to southern Brazil and is popularly known as "cânfora". The presented study analyzes the antinociceptive effect of hydroalcoholic extract from Polygala molluginifolia (HEPm) and an isoflavone (ISO) isolated from the extract, in behavioral models of pain in mice, as well as the mechanism underlying this effect. MATERIALS AND METHODS The phytochemical analysis of HEPm was performed through a capillary electrophoresis analysis and colorimetric test. The antinociceptive effects of HEPm and ISO (10-1000 mg/kg, i.g.) were evaluated by applying the formalin test; mechanical and thermal hyperalgesia to postoperative pain in mice. The possible involvement of opioid receptors, TRPV1 and TRPA1 channels in the antinociceptive effect of HEPm and ISO were also evaluated. Finally, the nonspecific effects of HEPm and ISO were evaluated by measuring locomotor activity (Open-field Test) and corporal temperature. RESULTS The 5,3',4'-trihydroxy-6″,6″-dimethylpyrano[2″,3″:7,6] isoflavone (ISO) was identified in HEPm by capillary electrophoresis analysis and selected for the experimental tests. The oral administration of HEPm or of ISO significantly inhibited the neurogenic and inflammatory phases of formalin-induced pain, edema formation and local hyperemia, without causing any change to locomotor activity. Acute and repeated treatment of animals with HEPm reduced mechanical and thermal (heat and cold) hyperalgesia in the postoperative pain. In addition, administering HEPm or ISO markedly reduced nociceptive behavior induced by the peripheral and central injection of TRPV1 and TRPA1 channels activators. Finally, the antinociception provided by the administration of HEPm or ISO was reversed by the preadministration of naloxone. CONCLUSIONS Taken together, these results provide the first experimental evidence of the significant antinociceptive effect of HEPm and ISO in animal models of acute pain without causing sedation or locomotor dysfunction. This effect appears to be mediated, at least in part, by the activation of opioid receptors and/or by the inhibition of TRPV1 and TRPA1 channels. Moreover, this study adds new scientific evidence and highlights the therapeutic potential of the medicinal plant Polygala molluginifolia in the development of phytomedicines with analgesic properties.
Collapse
Affiliation(s)
- Catharina Nucci-Martins
- Laboratory of Neurobiology of Pain and Inflammation, Department of Physiological Sciences, Center of Biological Sciences, Federal University of Santa Catarina, Trindade, Florianópolis, SC 88040-900, Brazil; Graduate Program in Neuroscience, Center of Biological Sciences, Federal University of Santa Catarina, SC 88040-900, Florianópolis, Brazil
| | - Leandro F Nascimento
- Laboratory of Neurobiology of Pain and Inflammation, Department of Physiological Sciences, Center of Biological Sciences, Federal University of Santa Catarina, Trindade, Florianópolis, SC 88040-900, Brazil; Graduate Program in Neuroscience, Center of Biological Sciences, Federal University of Santa Catarina, SC 88040-900, Florianópolis, Brazil
| | - Dalila Venzke
- Department of Chemistry, Center of Physical and Mathematical Sciences, Federal University of Santa Catarina, Trindade, Florianópolis, SC 88040-900, Brazil
| | - Lizandra C Brethanha
- Department of Chemistry, Center of Physical and Mathematical Sciences, Federal University of Santa Catarina, Trindade, Florianópolis, SC 88040-900, Brazil
| | - Alysson V F Sako
- Department of Chemistry, Center of Physical and Mathematical Sciences, Federal University of Santa Catarina, Trindade, Florianópolis, SC 88040-900, Brazil
| | - Aldo S Oliveira
- Department of Chemistry, Center of Physical and Mathematical Sciences, Federal University of Santa Catarina, Trindade, Florianópolis, SC 88040-900, Brazil
| | - Inês M C Brighente
- Department of Chemistry, Center of Physical and Mathematical Sciences, Federal University of Santa Catarina, Trindade, Florianópolis, SC 88040-900, Brazil
| | - Gustavo A Micke
- Department of Chemistry, Center of Physical and Mathematical Sciences, Federal University of Santa Catarina, Trindade, Florianópolis, SC 88040-900, Brazil
| | - Moacir G Pizzolatti
- Department of Chemistry, Center of Physical and Mathematical Sciences, Federal University of Santa Catarina, Trindade, Florianópolis, SC 88040-900, Brazil
| | - Adair R S Santos
- Laboratory of Neurobiology of Pain and Inflammation, Department of Physiological Sciences, Center of Biological Sciences, Federal University of Santa Catarina, Trindade, Florianópolis, SC 88040-900, Brazil; Graduate Program in Neuroscience, Center of Biological Sciences, Federal University of Santa Catarina, SC 88040-900, Florianópolis, Brazil.
| |
Collapse
|
5
|
Csupor D, Bognár J, Karsai J. An Optimized Method for the Quantification of Isoflavones in Dry Soy Extract Containing Products. FOOD ANAL METHOD 2015. [DOI: 10.1007/s12161-015-0143-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
6
|
Sanmuga Priya E, Senthamil Selvan P, Marudhupandian K. Comparative analysis of isoflavone and protein content in different varieties of Glycine max(L.) Merrill. JPC-J PLANAR CHROMAT 2015. [DOI: 10.1556/jpc.28.2015.1.8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
7
|
UHPLC–UV method for the determination of flavonoids in dietary supplements and for evaluation of their antioxidant activities. J Pharm Biomed Anal 2015; 102:468-75. [DOI: 10.1016/j.jpba.2014.10.004] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2014] [Revised: 10/01/2014] [Accepted: 10/03/2014] [Indexed: 11/20/2022]
|
8
|
Vilela D, Martín A, González MC, Escarpa A. Fast and reliable class-selective isoflavone index determination on carbon nanotube press-transferred electrodes using microfluidic chips. Analyst 2014; 139:2342-7. [DOI: 10.1039/c4an00025k] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Direct microfluidic electrochemical sensing of class-isoflavones in complex soy samples on press-transferred carbon nanotubes.
Collapse
Affiliation(s)
- D. Vilela
- Department of Analytical Chemistry
- Physical Chemistry and Chemical Engineering
- University of Alcalá
- E-28871 Alcalá de Henares, Spain
| | - A. Martín
- Department of Analytical Chemistry
- Physical Chemistry and Chemical Engineering
- University of Alcalá
- E-28871 Alcalá de Henares, Spain
| | - M. C. González
- Department of Analytical Chemistry
- Physical Chemistry and Chemical Engineering
- University of Alcalá
- E-28871 Alcalá de Henares, Spain
| | - A. Escarpa
- Department of Analytical Chemistry
- Physical Chemistry and Chemical Engineering
- University of Alcalá
- E-28871 Alcalá de Henares, Spain
| |
Collapse
|
9
|
Fast simultaneous determination of free and conjugated isoflavones in soy milk by UHPLC–UV. Food Chem 2012; 135:2832-8. [DOI: 10.1016/j.foodchem.2012.06.011] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2011] [Revised: 02/23/2012] [Accepted: 06/07/2012] [Indexed: 11/20/2022]
|
10
|
Shinkaruk S, Durand M, Lamothe V, Carpaye A, Martinet A, Chantre P, Vergne S, Nogues X, Moore N, Bennetau-Pelissero C. Bioavailability of glycitein relatively to other soy isoflavones in healthy young Caucasian men. Food Chem 2012; 135:1104-11. [PMID: 22953831 DOI: 10.1016/j.foodchem.2012.03.135] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2012] [Revised: 03/03/2012] [Accepted: 03/16/2012] [Indexed: 11/20/2022]
Abstract
Glycitein is a Selective Estradiol Receptor Modulator (SERM) from soy. The study reports plasma bioavailability and urine excretion of glycitein compared to other soy isoflavones after a unique intake of food supplement based on soy germ containing 55.24mg isoflavones. Eighteen plasma and urinary sampling profiles collected over 48h from healthy young Caucasian men were analysed using specific ELISAs. Eight profiles contained equol. Glycitein T(max), C(max), AUC(0→24h) and T(½) in plasma were calculated. Urine T(max), % of excretion at 24h and clearance were assessed. Glycitein is one of the best absorbed flavonoids. Plasma steady-state level can be achieved by several intakes a day. Glycitein bioavailability is similar to that of daidzein and its urinary excretion is significantly higher than that of genistein. Equol does not affect glycitein bioavailability. Knowing glycitein bioavailability in man is essential for the development of soy-germ-based food supplements for health applications.
Collapse
Affiliation(s)
- Svitlana Shinkaruk
- Univ. Bordeaux, Neurocentre Magendie, Physiopathologie de la plasticité neuronale, U862, F-33000 Bordeaux, France
| | | | | | | | | | | | | | | | | | | |
Collapse
|
11
|
Rizelio VM, Gonzaga LV, da Silva Campelo Borges G, Micke GA, Fett R, Costa ACO. Development of a fast MECK method for determination of 5-HMF in honey samples. Food Chem 2012. [DOI: 10.1016/j.foodchem.2011.11.058] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
|
12
|
Bustamante-Rangel M, Delgado-Zamarreño M, Carabias-Martínez R, Domínguez-Álvarez J. Analysis of isoflavones in soy drink by capillary zone electrophoresis coupled with electrospray ionization mass spectrometry. Anal Chim Acta 2012; 709:113-9. [DOI: 10.1016/j.aca.2011.10.015] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2011] [Revised: 10/07/2011] [Accepted: 10/08/2011] [Indexed: 01/21/2023]
|
13
|
Determination of soybean isoflavones in soybean meal and fermented soybean meal by micellar electrokinetic capillary chromatography (MECC). Food Chem 2011. [DOI: 10.1016/j.foodchem.2010.11.168] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
14
|
Boltovets P, Shinkaruk S, Bennetau-Pelissero C, Bennetau B, Snopok B. The effect of low pH on the glycitein–BSA conjugate interaction with specific antiserum: Competitive inhibition study using surface plasmon resonance technique. Talanta 2011; 84:867-73. [DOI: 10.1016/j.talanta.2011.02.008] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2010] [Revised: 02/02/2011] [Accepted: 02/14/2011] [Indexed: 11/26/2022]
|
15
|
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.
Collapse
|
16
|
Valls J, Millán S, Martí MP, Borràs E, Arola L. Advanced separation methods of food anthocyanins, isoflavones and flavanols. J Chromatogr A 2009; 1216:7143-72. [PMID: 19691963 DOI: 10.1016/j.chroma.2009.07.030] [Citation(s) in RCA: 182] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2009] [Revised: 06/15/2009] [Accepted: 07/02/2009] [Indexed: 01/13/2023]
Abstract
In recent years, increasing knowledge of the positive health effects of food polyphenols has prompted the need to develop new separation techniques for their extraction, fractionation and analysis. This article provides an updated and exhaustive review of the application of counter-current chromatography, high performance liquid chromatography, capillary electrophoresis, and their hyphenation with mass spectrometry to the study of food polyphenols. Flavonoids constitute the largest class of polyphenols, widely spread in the plant kingdom and common in human diet which has been the most widely studied with respect to their antioxidant and biological activities. The main subgroups are anthocyanins, catechins, isoflavones, flavonols and flavones. They are reported to exhibit antioxidant, anti-carcinogenic, anti-inflammatory, anti-atherogenic, anti-thrombotic, and immune modulating functions, among others. Since red fruit anthocyanins, soy isoflavones and flavanols from grapes and teas are currently the most used phenolic compounds for producing new nutraceuticals and functional foods, this review is focused on these three flavonoid groups.
Collapse
|
17
|
Silva M. Micellar electrokinetic chromatography: Methodological and instrumental advances focused on practical aspects. Electrophoresis 2009; 30:50-64. [DOI: 10.1002/elps.200800414] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
18
|
Dahdouh FT, Clarke K, Salgado M, Hanrahan G, Gomez FA. Chemometrical examination of active parameters and interactions in flow injection-capillary electrophoresis. Electrophoresis 2008; 29:3779-85. [PMID: 18850647 DOI: 10.1002/elps.200800170] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The first detailed examination of flow injection-capillary electrophoresis (FI-CE) active parameters and their interactions via response surface methodology (RSM) is presented. Specifically, RSM in the form of a Box-Behnken design was implemented to effectively predict the significance of capillary length, voltage and injection volume on the optimization of an in-house built FI-CE analyzer. Initial studies were performed assessing peak height and peak shape of the model compound N,N-dimethylformamide. Optimum model conditions were then derived and used in the model separation of two small molecules, nicotinamide adenine dinucleotide, reduced form (NADH) and benzenesulfonamide. By implementing the RSM approach, detailed examination of active FI-CE parameters was possible, including the ability to reveal a significant interactive effect. This work is not only highly significant for advancing FI-CE developments, but instructive for investigators actively exploring other coupled analytical techniques and associated experimental parameters.
Collapse
Affiliation(s)
- Froseen T Dahdouh
- Department of Chemistry and Biochemistry, California State University, Los Angeles, CA 90032, USA
| | | | | | | | | |
Collapse
|
19
|
Shinkaruk S, Lamothe V, Schmitter JM, Fructus A, Sauvant P, Vergne S, Degueil M, Babin P, Bennetau B, Bennetau-Pelissero C. Synthesis of haptens and conjugates for ELISA of glycitein: development and validation of an immunological test. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2008; 56:6809-17. [PMID: 18646854 DOI: 10.1021/jf800663s] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Two carboxylic acid haptens of glycitein were synthesized, with a spacer arm at the C2 position. They differed in the length of the spacer arm, with the length of the spacer arms being three or four carbon atoms, and were named Delta3-glycitein and Delta4-glycitein haptens, respectively. The different haptens were coupled to bovine serum albumin (BSA), and the coupling efficiency was assessed by MALDI mass spectrometry. Polyclonal antibodies were generated against the BSA conjugates. An additional conjugate of Delta4-glycitein hapten was generated with swine thyroglobulin (Thyr). Enzyme-linked immunosorbent assays (ELISAs) based on the competition between free glycitein and Delta4-glycitein-Thyr conjugates for specific antibodies were developed. The IC50 of the standard curves was 15.6 ng mL(-1) with anti-Delta3-glycitein and 62.5 ng mL(-1) with anti-Delta4-glycitein, that is, 10.9 and 44 pmol/well, respectively. With the Delta3-glycitein antibody, interassay and intra-assay variations were 12.2 and 11.5%, respectively. Specificity tests did not show any significant cross-reaction with any other soy isoflavone. This specificity is not influenced by the length of the spacer arm. The assay was validated by measurements performed on plasma samples as well as on soy-based foodstuffs and on soy-based food supplements.
Collapse
Affiliation(s)
- Svitlana Shinkaruk
- Université de Bordeaux, EA 2975 UBX1-UBX2-ENITA de Bordeaux, F-33405, France
| | | | | | | | | | | | | | | | | | | |
Collapse
|
20
|
On-line concentration of trace genistein by acid barrage stacking in capillary electrophoresis with UV detection. CHINESE CHEM LETT 2008. [DOI: 10.1016/j.cclet.2008.05.022] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
21
|
Feng HY, Hou SR, Zheng N, Li XJ, Hu ZB, Yuan ZB. Quantitative Analysis of Genistein in Human Plasma by Online Concentration CE with UV Detection. Chromatographia 2008. [DOI: 10.1365/s10337-008-0658-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
22
|
Marques FFC, de Souza CF, Figueiredo FS, Aucélio RQ. Selective Determination of Harmol by Room-Temperature Phosphorimetry: A Comparative Performance with Micellar Electrokinetic Capillary Chromatography. ANAL LETT 2008. [DOI: 10.1080/00032710802122339] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
23
|
Saracino MA, Mercolini L, Musenga A, Bugamelli F, Raggi MA. Comparison of analytical methods for the quality control of a new formulation containing soy extract and melatonin. J Sep Sci 2008; 31:1851-9. [PMID: 18461639 DOI: 10.1002/jssc.200700595] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Three analytical methods have been developed and compared for the quality control of a new formulation (Soymen GN(R) capsules) containing soy extract and melatonin for the treatment of menopausal symptoms. The first method is based on MEKC with diode-array detection, using a mixture of basic carbonate buffer (95%) and methanol (5%), containing 55 mM SDS, as the BGE. The second method is an HPLC method with UV detection at 260 nm. The third method is an HPLC method coupled to amperometric detection which is carried out at an oxidation potential of +0.8 V. In both HPLC systems, the chromatographic separation is obtained on an RP C18 column using a mixture of ACN and an acidic phosphate buffer (25:75 v/v) as the mobile phase. A feasible pretreatment procedure with a methanol/water mixture has been implemented to achieve the quantitative extraction of the main soy isoflavones and of melatonin from the capsules. The results obtained with the three methods are in good agreement with each other and satisfactory in terms of linearity (r(2) >0.9996), precision (RSD <5.4%) and accuracy (recovery >97%). Thus, each of the three analytical methods seems to be suitable for the simultaneous analysis of the main soy isoflavones and melatonin in the new commercial formulation.
Collapse
Affiliation(s)
- Maria Addolorata Saracino
- Laboratory of Pharmaco-Toxicological Analysis, Department of Pharmaceutical Sciences, Faculty of Pharmacy, Alma Mater Studiorum - University of Bologna, Bologna, Italy.
| | | | | | | | | |
Collapse
|
24
|
7 Overview of current regulatory guidance. ACTA ACUST UNITED AC 2008. [DOI: 10.1016/s0149-6395(07)00007-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/20/2023]
|
25
|
García-Cañas V, Cifuentes A. Recent advances in the application of capillary electromigration methods for food analysis. Electrophoresis 2008; 29:294-309. [DOI: 10.1002/elps.200700438] [Citation(s) in RCA: 88] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
26
|
Klejdus B, Vacek J, Benesová L, Kopecký J, Lapcík O, Kubán V. Rapid-resolution HPLC with spectrometric detection for the determination and identification of isoflavones in soy preparations and plant extracts. Anal Bioanal Chem 2007; 389:2277-85. [PMID: 17899029 DOI: 10.1007/s00216-007-1606-3] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2007] [Revised: 08/06/2007] [Accepted: 09/04/2007] [Indexed: 10/22/2022]
Abstract
A rapid-resolution HPLC/UV-VIS DAD separation method (which takes <1 min) for the determination and identification of genistin, genistein, daidzein, daidzin, glycitin, glycitein, ononin, formononetin, sissotrin and biochanin A in fmol quantities in submicroliter sample volumes was optimized. A linear gradient elution (0 min 22% B, 1.0 min 80% B, 1.4 min 100% B, 1.8 min 22% B) using a mobile phase containing 0.2 % (v/v) acetic acid (solvent A) and methanol (solvent B) was applied on a Zorbax SB C18 column (1.8 microm particle size) at 80 degrees C. The method was verified using samples of bits of soy and methanolic extracts from Trifolium pratense, Iresine herbstii and Ononis spinosa plants. Pseudobaptigenin glucoside, irilone, prunetin, texasin, tlatlancuayin and other isoflavones, in addition to aglycones of isoflavones and their beta-glucosides and malonyl and acetyl derivatives, were identified by UV-VIS DAD and electrospray mass spectrometric (ESI-MS) detection in the extracts.
Collapse
Affiliation(s)
- B Klejdus
- Department of Chemistry and Biochemistry, Mendel University of Agriculture and Forestry, Zemedelská 1, 613 00, Brno, Czech Republic
| | | | | | | | | | | |
Collapse
|