نتایج جستجو برای: reverse phase chromatography

تعداد نتایج: 789091  

Journal: :Journal of Drug Delivery and Therapeutics 2023

To evaluate and quantify Irinotecan (R-enantiomer) / related compound D in hydrochloride trihydrate API, a high stereo-specific liquid chromatography technique was developed validated. The partition accomplished on ChiralpakIC-3 (150 x 4.6 mm 3µm) through mobile fragment comprising 0.1 % v/v Formic acid water acetonitrile with 1mL/min, 250C, 20µL, 50C 370 nmas flow rate, column temparture, inje...

2001
C. Brugidou A. Rocher B. Lelong B. Marin

A new technique for separation and dctermination of ATP, ADP, AMP, NAD', NADP', NADH and NADPH in Lactobacillus plantarum has been developped. It involves acid and basic extraction of nucleotide pool, analysis by reverse-phase high performance liquid chromatography on a 5 p Spherisorb ODS-1 column and UV detection. The method offers advantages in accurate estimations of adenylic and nicotinamid...

2010
Alley E. Watada Tony T. Tran

Riboflavln (Vitamin 82) in fresh fruits and vegetables, which is present in ng levels, was separated on a reverse-phase Altex-ultrasphere ODS column with water, methanol, and heptane sulfonic acid as the mobile phase. Ion-pairing reduced tailing of the peak. Quantity of riboflavin was based on fluorescence, excitation at 450 nm, and emission at 530 nm. INTRODUCTION Analysis of riboflavin has be...

Journal: :American Journal of Analytical Chemistry 2022

The modification of high-performance liquid chromatography parameters leads to a more effective oligonucleotide-A purification process. Using various experimental such as buffer, concentration, and pH, method for optimizing the an on reverse-phase C18 column was created. To purify oligonucleotide-A, High-Performance Liquid Chromatography (HPLC), Ultraviolet-Visible Spectrophotometry (UV-Vis), C...

Journal: :Journal of Peptide Science 2023

The current wound-healing collagen mimetic peptides (CMPs) have limitations such as poor membrane permeability and protease susceptibility. Herein, the solid-phase peptide synthesis of CMPs containing integrin binding motif GFOGER is reported. sequences also consist lipophilic moieties (adamantane palmitic acid) for improved different collagen-inducing tripeptides, namely, Thr-Thr-Lys (TTK), Gl...

Journal: :environmental studies of persian gulf 2014
gholamhossein mohebbi asma hosseini rahim tahmasebi mehdi mohammadi

aflatoxins (afs) are one of the most important mycotoxins due to their common occurrence in feedstuffs and feeds that pose a serious threat to humans and animals. although many outbreaks of acute and chronic diseases have been attributed to consumption of aflatoxin-contaminated foods, the most significant effect of aflatoxin is hepatotoxicity in farm animals, especially aflatoxicosis in shrimps...

Journal: :Biologicals : journal of the International Association of Biological Standardization 2008
Bipin Sharma Aditi Joseph Anil Sood

The authors developed a simple and rapid method for quantitation of 2-phenoxyethanol (2-PE) in DTwP vaccine based on reverse phase high performance liquid chromatography (HPLC). The method was simple and reproducible. The sensitivity of the assay was confirmed by spiking known amounts of 2-phenoxyethanol to the vaccine sample.

Journal: :The Analyst 2015
Nichole M Lareau Jody C May John A McLean

A simple method for the analysis of non-derivatized glycans using a reverse phase column on a liquid chromatography-ion mobility-mass spectrometry (LC-IM-MS) instrument. The methodology supports both glycomic and proteomic work flows without the necessity of switching columns.

Journal: :The Journal of antibiotics 1995
T S Jeong S U Kim K H Son B M Kwon Y K Kim M U Choi S H Bok

GERI-BP001 compounds, new inhibitors of acyl-CoA:cholesterol acyltransferase (ACAT), were isolated from a culture broth of Aspergillus fumigatus F37 by acetone extraction, EtOAc extraction, SiO2 column chromatography, and reverse phase HPLC. GERI-BP001 M, A, and B inhibit ACAT activity in an enzyme assay system using rat liver microsomes by 50% at concentrations of 42, 94, and 40 microM, respec...

Journal: :The Journal of antibiotics 1985
E Meyers R Cooper L Dean J H Johnson D S Slusarchyk W H Trejo P D Singh

Two novel antibiotics, catacandin A and catacandin B, were isolated from the fermentation broth of the bacterium, Lysobacter gummosus, by extraction and adsorption, reverse-phase and gel filtration chromatography. On the basis of their physico-chemical properties, they are acyltetramic acids that are easily distinguishable from others in this class. Catacandin A and catacandin B possess good an...

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