Phytochemical Analysis

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Wiley from 1991, Ingenta, Proquest, Rcgp, and CSA

  1. Optimisation of supercritical fluid extraction of indole alkaloids from Catharanthus roseus using experimental design methodology--comparison with other extraction techniques.

    Phytochemical Analysis 19(1):52 (2008) PMID 17654538

    Response surface modelling, using MODDE 6 software for Design of Experiments and Optimisation, was applied to optimise supercritical fluid extraction (SFE) conditions for the extraction of indole alkaloids from the dried leaves of Catharanthus roseus. The effects of pressure (200-400 bar), tempe...
  2. Simultaneous quantification of five triterpenoid saponins in Clematis L. spp. by high-performance liquid chromatography with evaporative light scattering detection.

    Phytochemical Analysis 19(1):40 (2008) PMID 17654533

    A simple and accurate method involving high-performance liquid chromatography with evaporative light scattering detection was developed for the simultaneous determination of five triterpenoid saponin components in Clematis L. spp. for the first time. The analysis was performed on a Zorbax SB-C(1...
  3. Isoflavones in the Rutaceae family: twenty selected representatives of the genera Citrus, Fortunella, Poncirus, Ruta and Severinia.

    Phytochemical Analysis 19(1):64 (2008) PMID 17654537

    Enzyme-linked immunosorbent assays in combination with semi-preparative high-performance liquid chromatography (HPLC) and analytical HPLC with mass spectroscopy in the selective ion monitoring mode were used for the determination of selected isoflavones, daidzein, genistein, biochanin A and thei...
  4. Selective analysis of phenolic compounds in propolis by HPLC-MS/MS.

    Phytochemical Analysis 19(1):32 (2008) PMID 17654520

    Phenolic compounds (flavonoids and phenolic acid derivatives) are major active constituents of the resinous fraction of propolis, and also represent its allergenic principles. We have developed a chromatography electrospray ionisation tandem mass spectrometry (HPLC-ESI-MS/MS) method to character...
  5. Quantitative analysis by HPLC-MS2 of the pyrrolizidine alkaloid adonifoline in Senecio scandens.

    Phytochemical Analysis 19(1):25 (2008) PMID 17879229

    A quantitative method using HPLC-MS(2) has been developed for the determination of adonifoline, one of the retronecine-type hepatotoxic pyrrolizidine alkaloids in Senecio scandens Buch.-Ham. ex D. Don., a traditional Chinese herb. Using an orthogonal design test, a simple and rapid sample extrac...
  6. High-performance liquid chromatographic separation and identification of polyphenolic compounds from the infusion of Davilla elliptica St. Hill.

    Phytochemical Analysis 19(1):17 (2008) PMID 17654510

    The isolation of polyphenolic compounds from an infusion of the Brazilian plant Davilla elliptica (Dilleniaceae), used as tea by virtue of its digestive properties, is described. An improved preparative HPLC method was used in order to isolate pure polyphenols from the complex mixture. Liquid-li...
  7. Analysis of ellagic acid in pomegranate rinds by capillary electrophoresis and high-performance liquid chromatography.

    Phytochemical Analysis 19(1):86 (2008) PMID 18229889

    Two novel methods for the analysis of ellagic acid in pomegranate (Punica granatum) rinds are proposed. Capillary electrophoresis (CE) was performed in a bare fused-silica capillary using a buffer solution of tri(hydroxymethyl)aminomethane:potassium dihydrogen phosphate (pH 8.4) with an applied ...
  8. Primary flavonoids in marigold dye: extraction, structure and involvement in the dyeing process.

    Phytochemical Analysis 19(1):46 (2008) PMID 17654539

    Flavonoids extracted from marigold flowers were investigated for their dyeing potential. Patulitrin (1) and patuletin (2) were isolated and their structures established using NMR and HPLC-MS. These compounds were identified as the main flavonoids present in the dyeing bath. Following the dyeing ...
  9. Recent methodology in the phytochemical analysis of ginseng.

    Phytochemical Analysis 19(1):2 (2008) PMID 18058794

    This review summarises the most recent developments in ginseng analysis, in particular the novel approaches in sample pre-treatment and the use of high-performance liquid-chromatography-mass spectrometry. The review also presents novel data on analysing ginseng extracts by nuclear magnetic reson...
  10. Current awareness in phytochemical analysis.
    Author(s) unavailable

    Phytochemical Analysis 19(1):91 (2008) PMID 18340659

  11. Multivariate chromatographic fingerprint preparation and authentication of plant material from the genus Bauhinia.

    Phytochemical Analysis 19(1):78 (2008) PMID 17685491

    Multivariate analysis and statistical mixture designs were used for chromatographic fingerprint preparation and authentication of the plant material of three species of the genus Bauhinia. The extracts were analysed by reversed-phase high-performance liquid chromatography. Mixture design gave an...
  12. Simultaneous quantitation of five flavonoid glycosides in Herba Epimedii by high-performance liquid chromatography-tandem mass spectrometry.

    Phytochemical Analysis 19(1):71 (2008) PMID 17879228

    A rapid and accurate reversed-phase liquid chromatography-tandem mass spectrometry (HPLC-MS/MS) method has been developed and validated for the quantitative determination of five flavonoid glycosides, icariin, epimedin A, epimedin B, epimedin C and hyperin in Herba Epimedii. Chromatographic sepa...
  13. Analysis of polyphenolic compounds and radical scavenging activity of four American Actaea species.

    Phytochemical Analysis 18(3):219 (2007) PMID 17500365 PMCID PMC2981772

    A reversed-phase high-performance liquid chromatography (RP-HPLC) method with diode array detection has been developed for analysis of the major polyphenols in the roots and rhizomes of black cohosh (Actaea racemosa), an important botanical dietary supplement for women's health, and three closel...
  14. A comparative study of multilayer perceptron neural networks for the identification of rhubarb samples.

    Phytochemical Analysis 18(2):109 (2007) PMID 17439010

    Artificial neural networks have gained much attention in recent years as fast and flexible methods for quality control in traditional medicine. Near-infrared (NIR) spectroscopy has become an accepted method for the qualitative and quantitative analyses of traditional Chinese medicine since it is...
  15. Isolation and characterisation of procyanidins from Rumex obtusifolius.

    Phytochemical Analysis 18(3):193 (2007) PMID 17500361

    An acetone:water (7:3) extract obtained from the leaves of Rumex obtusifolius was fractionated into procyanidin oligomer and polymer fractions using a linear gradient and a simple step method on Sephadex LH-20. The chemical characteristics of the procyanidin fractions were studied by 13C-NMR spe...
  16. Application of atmospheric pressure chemical ionisation mass spectrometry in the identification and differentiation of Panax species.

    Phytochemical Analysis 18(2):146 (2007) PMID 17439015

    An HPLC-MS method using an atmospheric pressure chemical ionisation (APCI) source has been developed to assist in the differentiation of three ginseng species: Panax quinquefolium (American ginseng), P. ginseng (Chinese ginseng) and P. notoginseng (sanqi) species. The differentiation method reli...
  17. The skimmiwallinols--minor components of the epicuticular wax of Cocos nucifera.

    Phytochemical Analysis 18(3):188 (2007) PMID 17500360

    Four new skimmiwallinol derivatives, isoskimmiwallinol acetate (4), skimmiwallinol acetate (5), isoskimmiwallinone (6) and skimmiwallinone (7), along with the previously isolated major components isoskimmiwallin (2) and skimmiwallin (3), have been found in the wax extract of pinnae from Cocos nu...
  18. pH stability of individual folates during critical sample preparation steps in prevision of the analysis of plant folates.

    Phytochemical Analysis 18(6):496 (2007) PMID 17624887

    The stability and eventual interconversion of nine mono-glutamate folates (5-methyl-tetrahydrofolate, tetrahydrofolate, 5-formyltetrahydrofolate, 5,10-methenyltetrahydrofolate, 5,10-methylenetetrahydrofolate, dihydrofolate, 10-formylfolic acid, 10-formyltetrahydrofolate and folic acid) during th...
  19. Studies on the aroma of maté (Ilex paraguariensis St. Hil.) using headspace solid-phase microextraction.

    Phytochemical Analysis 18(6):469 (2007) PMID 17624890

    Volatile and semi-volatile components of maté (Ilex paraguariensis St. Hil.) were analysed by headspace solid-phase microextraction (HS-SPME) coupled to gas chromatography and mass spectrometry. Five SPME fibres coated separately with 100 microm poly(dimethylsiloxane) (PDMS), 65 microm PDMS-divi...
  20. A capillary zone electrophoresis method for the quantitative determination of hypoxoside in commercial formulations of African potato (Hypoxis hemerocallidea).

    Phytochemical Analysis 18(6):475 (2007) PMID 17624891

    Hypoxoside is a norlignan diglucoside present in the corms of African potato, Hypoxis hemerocallidea, used as a popular African traditional medicine for its nutritional and immune boosting properties. A specific analytical method employing capillary zone electrophoresis has been developed and va...