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TPC in the leaves of 116 sweet potato (Ipomoea batatas L.) varieties and Pushu 53 leaf extracts

Our results show that the extracts demonstrated potential antioxidant activity, and that a satisfactory correlation between TPC and antioxidant activity was observed.

出版机构:Elsevier Science

刊物名称:Journal of Food Composition and Analysis

出版时间:2010

ISSN:0889-1575

数据源:报刊文摘

Separation of triphenyl atropisomers of a pharmaceutical compound on a novel mixed mode stationary phase: A case study involving dynamic chromatography, dynamic NMR and molecular modeling

nalysis of atropisomers is of considerable interest in the pharmaceutical industry. For complex chiral molecules with several chiral centers hindered axial rotation can lead to formation of interconverting diastereomers that should be separable on achiral stationary phases.

出版机构:Elsevier Science

刊物名称:Journal of Chromatography A

出版时间:2010

ISSN:0021-9673

数据源:报刊文摘

Comprehensive separation and identification of chemical constituents from Apocynum venetum leaves by high-performance counter-current chromatography and high performance liquid chromatography coupled with mass spectrometry

For HPCCC separation, four sets of solvent systems, n-hexane?ethyl acetate?acetonitrile?water (1.5:3.5:2:4.5, v:v:v:v), ethyl acetate?methanol?water (5:2:5, v:v:v) and n-butanol?methanol?water (5:1:5, v:v:v) were used for the one-step separation by four stages.

出版机构:Elsevier Science

刊物名称:Journal of Chromatography B, Analytical Technologies in the Biomedical and

出版时间:2010

ISSN:1570-0232

数据源:报刊文摘

Optimization of two methods for the analysis of hydrogen peroxide: High performance liquid chromatography with fluorescence detection and high performance liquid chromatography with electrochemical detection in direct current mode

Two complementary methods were optimized for the separation and detection of trace levels of hydrogen peroxide. The first method utilized reversed-phase high-performance liquid chromatography with fluorescence detection (HPLC?FD).

出版机构:Elsevier Science

刊物名称:Journal of Chromatography A

出版时间:2010

ISSN:0021-9673

数据源:报刊文摘

Antioxidant, cytoprotective and antibacterial effects of Sea buckthorn (Hippophae rhamnoides L.) leaves

The present study was carried out to investigate the antioxidant, cytoprotective and antibacterial effects of aqueous and hydroalcoholic extracts of Hippophae rhamnoides L.

出版机构:Elsevier Science

刊物名称:Food and Chemical Toxicology

出版时间:2010

ISSN:0278-6915

数据源:报刊文摘

Antioxidant activity and chemical constituents of essential oil and extracts of Rhizoma Homalomenae

GC?MS analysis of the essential oil (yield: 0.82%,v/w) resulted in the identification of 77 compounds, accounting for 96.5% of the content of the oil. The major components, epi-?-cadinol (14.8%), ?-cadinol (14.8%), ?-terpineol (13.8%), linalool (11.1%), terpinen-4-ol (4.92%), and ?

出版机构:Elsevier Science

刊物名称:Food Chemistry

出版时间:2011

ISSN:0308-8146

数据源:报刊文摘

LC/ESI–MS/MS method for the identification and quantification of spinosad residues in olive oils

This paper reports the use of liquid chromatography/electrospray ionisation tandem mass spectrometry (LC/ESI-MS/MS) method for the identification and quantification of residues of the natural insect control agent Spinosad in olive oils.

出版机构:Elsevier Science

刊物名称:Food Chemistry

出版时间:2011

ISSN:0308-8146

数据源:报刊文摘

Chromatographic techniques for the determination of alkyl-phenols, tocopherols and other minor polar compounds in raw and roasted cold pressed cashew nut oils

Anacardium occidentale belongs to the family Anacardiaceae and is principally grown in tropical America (Mexico, Peru, Brazil, etc.) and India. Cashew nuts contain low amounts of hydroxy alkyl phenols that come from an oily liquid present in their shell and that is known as cashew-nut shell liquid.

出版机构:Elsevier Science

刊物名称:Journal of Chromatography A

出版时间:2010

ISSN:0021-9673

数据源:报刊文摘

The effects of solvents on the phenolic contents and antioxidant activity of Stypocaulon scoparium algae extracts

Water, water/methanol (1/1), methanol and ethanol crude extracts from a brown alga Stypocaulon scoparium were examined for total phenolic contents (TPC) using Folin?Ciocalteu method. DPPH scavenging assay was performed to measure the radical scavenging activities (RSA) of the extracts.

出版机构:Elsevier Science

刊物名称:Food Chemistry

出版时间:2011

ISSN:0308-8146

数据源:报刊文摘

Spectrum of Haemoglobinopathies Diagnosed by Cation Exchange-hplc & Modulating Effects of Nutritional Deficiency Anaemias from North India

出版机构:Indian Council of Medical Research

刊物名称:Indian Journal of Medical Research

出版时间:2010

ISSN:0971-5916

数据源:报刊文摘