نتایج جستجو برای: hplc analysis

تعداد نتایج: 2846082  

Journal: :iranian journal of pharmaceutical research 0
shuping wang department of pharmacy, tianjin provincial corps hospital, chinese people’s armed police forces jingze zhang department of pharmacy, logistics college of chinese people’s armed police forces zhidan zhang school of pharmaceutical science and technology wenyuan gao school of pharmaceutical science and technology, tianjing university, no.92 weijin road, nankai district, tianjin 300072, china yanan yan school of pharmaceutical science and technology xia li school of pharmaceutical science and technology

chinese jujube (ziziphus jujuba mill.) has long been widely used for human consumption and medicinal purposes in china. it has been reported to possess several vital biological activities. however, the systematic study on the chemical constituents absorbed into plasma and their metabolites is still insufficient. a high-performance liquid chromatography-photodiode array detector-electrospray ion...

2013
Changming Zhang Zhanggen Huang Shijie Guo Yaqin Hou

The aim of this paper is to know the compositions in unknown medicinal-lotion and to evolution its applications. Through a variety of studies, an analysis method was established. This method mainly is that samples were first extracted and pre-treated by concentration of compositions, and then they were separated and qualitatively analyzed by multiple-instruments. These instruments involve Mass ...

2006

In this study, an established HPLC method for USP Phenobarbital was sequentially and quickly improved to a high throughput method using Rapid Resolution (RR) and Rapid Resolution High Throughput (RRHT) techniques. New RRHT column technology is an especially powerful tool for improving lab productivity by reducing HPLC analysis time dramatically. Starting with a proven rugged method, conversion ...

2009
Tee Siong

Eight vegetables were pre-treated with and without sa­ ponification, and chromatographed by reversed-phase HPLC. Carote11Oid peaks were identified using seven reference standards. Samples extracts were also chromatographed llsing a mixed magnesia and diatomaceous earth column. Fractions were eluted using stepwise increases in the proportion of acetone in hexane, studied by UV-VIS ab­ sorption s...

Journal: :Journal of chromatographic science 2001
C H Su Y Z Yang H O Ho C H Hu M T Sheu

A high-performance liquid chromatographic (HPLC) analysis of triterpenoids from Ganoderma is developed and validated in an attempt to explore a way to differentiate a number of species of the genus Ganoderma. Results show that 64 samples examined in this study could be divided into 18 groups based on characteristics of the HPLC pattern of triterpenoids. This result also conforms with those of t...

2003
Shizuka Iida

Glycosaminoglycans (GAGs) have been identified as one of the macromolecules present in the stone matrix. Although electrophoresis has been used to analyze the composition of GAGs, this method is laborious and insensitive. The aim of this study was to examine GAG profiles in the stone matrix from 4 types of stones using high-performance liquid chromatography (HPLC). This method has been shown to...

2010
Takashi Hagiwara Seiji Saito Yoshifumi Ujiie Kensaku Imai Masanori Kakuta Koji Kadota Tohru Terada Kazuya Sumikoshi Kentaro Shimizu Tatsunari Nishi

Liquid Chromatography Time-of-Flight Mass Spectrometry (LC-TOF-MS) is widely used for profiling metabolite compounds. LC-TOF-MS is a chemical analysis technique that combines the physical separation capabilities of high-pressure liquid chromatography (HPLC) with the mass analysis capabilities of Time-of-Flight Mass Spectrometry (TOF-MS) which utilizes the difference in the flight time of ions d...

Journal: :iranian journal of pharmaceutical research 0
mohammad charehsaz yeditepe university faculty of pharmacy aylin gurbay hacettepe university faculty of pharmacy ahmet aydin yeditepe university faculty of pharmacy gonul sahin hacettepe university faculty of pharmacy

in this study, a high-performance liquid chromatographic method (hplc) and uv spectrophotometric method were developed, validated and applied for the determination of theophylline in biological fluids. liquid- liquid extraction is performed for isolation of the drug and elimination of plasma and saliva interferences. urine samples were applied without any extraction. the chromatographic separat...

Journal: :Acta Crystallographica Section D Biological Crystallography 2015

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