ginkgolic acid/ginkgo

The determination of ginkgolic acids in Ginkgo products is one of the principal components of quality control. However, a number of ginkgolic acids with different side chains may be present and this makes their analysis by conventional chromatographic methods more complex. In this study, 1H-NMR

An efficient coordination high-speed counter-current chromatography method for the preparative separation of ginkgolic acids from the sarcotesta of Ginkgo biloba L was developed. The type, concentration, and mechanism of the coordination agent were investigated. Following the use of four types of

A reversed-phase argentation high-performance liquid chromatographic method has been achieved for the determination of ginkgolic acids. Liquid chromatography coupled with electrospray ionization (ESI) mass spectrometry in the negative ion mode is applied to identify ginkgolic acids from ginkgo

Ginkgo biloba has a very high medicinal value. The flavonol glycosides and terpene lactones contained in G. biloba extract (GBE) have such pharmacological effects as antioxidant, anti-platelet aggregation and memory improvement, enhancement of immune function. However, the ginkgolic acid (GA)

Dummy molecularly imprinted polymers (DMIPs) for simultaneously selective removal and enrichment of ginkgolic acids (GAs) during the processing of Ginkgo biloba leaves have been prepared. Two dummy template molecule with similar structural skeleton to GAs, 6-methoxysalicylic acid (MOSA, DT-1) and

OBJECTIVE To study the influence of ginkgolic acids on human tumor cells and normal cells. METHODS Ginkgolic acids (total concentration 90%) was prepared from ginkgo sarcotestas. The inhibitive effect of ginkgolic acids on human tumor cells and normal cells lines was examined by MTT

Ginkgolic acids are alkylsalicylic acid derivatives with a thermolabile carboxylic group from Ginkgo biloba L., and they exhibit anticancer activity. Their anticancer effects are closely associated with their thermal stability. In this study, the thermal decomposition of ginkgolic acids was analyzed

A chromatographic procedure for the preparative isolation of six different 6-alkylsalicylic acids (syn. ginkgolic acids) with as alkyl substituents C13:0, C15:0, C15:1, C17:1, C17:2 and, tentatively C17:3 from Ginkgo biloba leaves was developed. The procedure consisted of a combination of

Supercritical fluid chromatography was used to resolve and determine ginkgolic acids (GAs) and terpene lactones concurrently in ginkgo plant materials and commercial dietary supplements. Analysis of GAs (C13:0, C15:0, C15:1, and C17:1) was carried out by ESI (-) mass detection. The ESI (-) spectra

A competitive enzyme-linked immunosorbent assay (ELISA) for ginkgolic acids (GAs) was developed using monoclonal antibody (MAb) 9F raised against 6-(13-formylheptyl) salicylic acid covalently coupled to bovine serum albumin (BSA). ELISA, at an effective measuring range of 300 ng/ml-1 microgram/ml of

An analytical method was developed for the determination of ginkgolic acids in ginkgo biloba extract and its preparations by ultra high performance liquid chromatography-triple quadrupole mass spectrometry. A chromatographic column, Agilent Poroshell 120 EC-C18 (50 mm x 3. 0 mm, 2.7 µm), was used

OBJECTIVE To develop a reverse phase argentation high performance liquid chromatographic (RP-AHPLC) method for the separation and determination of ginkgolic acids. METHODS Liquid chromatography-electrospray ionization mass spectrometry (LC/ESI-MS) was applied to identify ginkgolic acids from Ginkgo

OBJECTIVE To establish a high performance liquid chromatographic method for determination of ginkgolic acids in Ginkgo biloba extract and its preparations. METHODS Ginkgo biloba extract and its preparations were extracted with petroleum ether in Soxhlet apparatus, and then concentrated under vacuum.

A method is developed for qualitative analysis of ginkgolic acids in the leaves and fruits of Ginkgo biloba by high-performance liquid chromatography (HPLC)-electrospray ionization-mass spectrometry technique. Negative ionization mode is successful in obtaining a very abundant deprotonated molecule

An analytical method has been firstly achieved for the quantification of ginkgolic acids from Ginkgo biloba leaves by reversed-phase argentation high performance liquid chromatography. Analytical sample was cleaned-up after addition of acidic salt solution and adsorbent to the matrix solution by