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Phenolic compounds in the brown seaweed Ascophyllum nodosum: distribution and radical-scavenging activities

Introduction - Phenolic compounds are metabolites exhibited at high levels in Phaeophyceae. Although several studies have been conducted on total phenol contents, no one to our knowledge has dealt with the contents of phenolic compounds and antioxidant activities on purified fractions.

出版机构:John Wiley & Sons, Ltd.

刊物名称:Phytochemical Analysis

出版时间:1990

ISSN:0958-0344

数据源:报刊文摘

Rapid method for simultaneous determination of 20 components in Isodon nervosa by high-performance liquid chromatography-electrospray ionisation tandem mass spectrometry

Introduction - Isodon nervosa is a commonly used traditional Chinese medicine including diterpenoids, phenolic acids, triterpenoids and volatile oil. Qualitative and quantitative analysis of multi-components is important for its quality control.

出版机构:John Wiley & Sons, Ltd.

刊物名称:Phytochemical Analysis

出版时间:1990

ISSN:0958-0344

数据源:报刊文摘

A nitromethane-based HPLC system alternative to acetonitrile for carotenoid analysis of fruit and vegetables

This solvent comes closest to acetonitrile with respect to its elutrophic property. Our criterion was to obtain similar separation and retention times for a range of differently structured carotenoids. This was achieved by further increase in the lipophilicity with ethylacetate.

出版机构:John Wiley & Sons, Ltd.

刊物名称:Phytochemical Analysis

出版时间:1990

ISSN:0958-0344

数据源:报刊文摘

Simultaneous determination of three naphthoquinones in the leaves of Impatiens balsamina L. by reversed-phase high-performance liquid chromatography

Introduction - Naphthoquinones; lawsone (1), lawsone methyl ether (2) and methylene-3,3'-bilawsone (3) are the main active compounds of Impatiens balsamina leaves. Objective - To develop and validate an HPLC method for simultaneous quantitative determination of 1-3 in I. balsamina leaf extracts.

出版机构:John Wiley & Sons, Ltd.

刊物名称:Phytochemical Analysis

出版时间:1990

ISSN:0958-0344

数据源:报刊文摘

Identification of the metabolites of Indole-3-acetic acid in growing hypocotyls of Lupinus albus

AbstractThe products of indole-3-acetic acid (IAA) metabolism by incubating hypocotyl sections and decapitated seedlings of Lupinus albus were investigated. Single treatments using [1-14C]-IAA, [2-14C]-IAA or [5-3H]-IAA and double treatments using [1-14C]-IAA+[5-3H]-IAA were carried out.

出版机构:Springer Netherlands

刊物名称:Plant Growth Regulation

出版时间:1990

ISSN:0167-6903

数据源:报刊文摘

Pharmacokinetics of individual components of teicoplanin in man

AbstractTeicoplanin is a new antibiotic consisting of closely related glycopeptides. Following an iv bolus of 400 mg teicoplanin, the pharmacokinetics of the individual components A3-1, A2-1, A2-2, A2-3, A2-4, and A2-5 was studied in five healthy volunteers by HPLC.

出版机构:Springer US

刊物名称:Journal of Pharmacokinetics and Pharmacodynamics

出版时间:1990

ISSN:1567-567X

数据源:报刊文摘

Development of a Preformulation Lipophilicity Screen Utilizing a C-18-Derivatized Polystyrene-Divinylbenzene High-Performance Liquid Chromatographic (HPLC) Column

AbstractAlkane/water partition coefficients have been predicted from the retention times of solutes using a C-18-derivatized polystyrene-divinylbenzene HPLC column (Act-I).

出版机构:Springer US

刊物名称:Pharmaceutical Research

出版时间:1990

ISSN:0724-8741

数据源:报刊文摘

Chemotaxonomy of the genus Talaromyces

AbstractSpecies of the ascomycetous genus Talaromyces have been examined for profiles of secondary metabolites on TLC. The greatest number of specific metabolites were produced on oatmeal-, malt extract- and yeast-extract sucrose agars.

出版机构:Springer Netherlands

刊物名称:Antonie van Leeuwenhoek

出版时间:1990

ISSN:0003-6072

数据源:报刊文摘

Hydrolysis of low-molecular-weight soil peptides by immobilized proteases in column and batch reaction systems

SummaryOrganic matter was extracted from three soils, a cultivated Berwick sandy loam, a cultivated Franklin loamy sand, and an uncultivated Cumberland silty loam. Gel-permeation chromatography was used to separate organic matter extracts into high- (HMW) and low-molecular-weight (LMW) fractions.

出版机构:Springer Verlag

刊物名称:Biology and Fertility of Soils

出版时间:1990

ISSN:0178-2762

数据源:报刊文摘

Underestimation of glucose turnover determined using [6-3H]glucose tracer in non-steady state

SummaryThe use of tritiated glucose tracers may result in underestimation of glucose turnover during hyperinsulinaemic clamps giving paradoxical negative endogenous glucose production rates.

出版机构:Springer Verlag

刊物名称:Diabetologia

出版时间:1990

ISSN:0012-186X

数据源:报刊文摘