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Monday, January 26, 2015
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Busted! First Dection of Steroid Hormones in Pacific Walrus Bones
Charapata P, Horstmann L, and Misarti N

The Pacific walrus (Odobenus rosmarus divergens) is a candidate species for the Endangered Species List because Arctic sea ice has declined significantly in the past decades. This project focuses on validating a method for extracting steroid hormones from archaeological, historical, and modern bone creating a baseline of hormone levels during different climate regimes. The results validate our method of hormone extraction as all steroid hormones were extracted from bones of all time frames.

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Uncertainty estimation of an analytical method for analysis of fumonisin B1 in four types of rice intended for consumption human
Petrarca, M.H.; Rossi, E.A.; Sylos, C.M.

The expanded measurement uncertainty of a sample preparation method based on QuEChERS procedure for the determination of fumonisin B1 in four types of rice, using HPLC-FLD after precolumn derivatisation with ortho-phthaldialdehyde, was estimated from in-house validation data.

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Forced Degradation Study of Expired and Marketed Tablets of Amlodipine by RP-HPLC
Manisha Puranik*, Monilisha Varma

The objective of the current study was to develop simple, accurate, sensitive and stability indicating RP-HPLC method for the determination of per cent drug remained of Amlodipine besylate in the presence of its degradation products in bulk drug, expired tablets and tablets whose expiry date has not been exceeded.

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LC-MS/MS METHOD FOR THE QUANTIFICATION OF PITOFENONE IN HUMAN PLASMA
B.M. Gurupadayya, S. Sharfuddin and R.S. Chandan

We developed LCMS/MS bioanalytical method for quantitative estimation of Pitofenone HCl in plasma is simple, sensitive, accurate, precise, and selective. Percentage recovery shows that the method is free from interference of matrix. The analytical method presented here has proved to be useful for investigation of the characteristics of Pitofenone in human plasma in pharmacokinetic and pharmacogenetic studies.

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"In-vitro studies on hydroxamic acid- CT DNA binding"
Rubi Khilari

In vitro studies of five the interaction between five different derivatives of hydroxamic acids, N-phenyl 2,4dichloro phenoxybutyro, N-m-tolyl 2,4 dichlorophenoxyglutero, N-m-tolyl-4-chlorophenoxyaceto, N-m-chloro-phenyl-tertiarybutylbenzo and N-p-tolyl-iso-valero hydroxamic acids and calf thymus DNA was investigated under simulated physiological condition.

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Validation of HPLC analytical method for determination of biogenic amines in agricultural products
Hyeock Yoon, Jae-Hyung Mah

An analytical method was validated for the quantitative determination of biogenic amines (BA) in agricultural products. The validation results fulfill AOAC criteria and recommendations. This method has been applying to analyze BA in agricultural products for a total dietary survey in Korea.

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Non-target Screening of Contaminants in Paper-paperboard for Food Contact Materials
Lukas Vapenka*, Adam Vavrous**, Lenka Votavova*, Kristina Kejlova**, Jaroslav Dobias*, Jitka Sosnovcova**

The aim of this work was non-targeted screening of xenobiotics in paper and paperboard packaging materials used for food packaging in the Czech Republic.

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Development of an Analytical Strategy for Simultaneous Determination of Multiple Contaminants in Paper Food Packaging
Adam Vavrouš (1), Lukáš Vápenka (2), Kristina Kejlová (1), Jitka Sosnovcová (1), Dagmar Jírová (1)

We developed a method for simultaneous determination of polycyclic aromatic hydrocarbons, polyfluorinated compounds, ink photoinitiators, phthalates and bisphenols in paper food packaging employing GC–MS/MS and HPLC–MS/MS.

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METHOD DEVELOPMENT FOR THE SIMULTANEOUS DETERMINATION OF METHYLMERCURY AND INORGANIC MERCURY IN SEAFOOD
Sergio Carneado, Ariane V. Zmozinski, Carmen Ibáñez-Palomino, Àngels Sahuquillo, José Fermín López-Sánchez, Márcia M. da Silva

This work reports the method development for the simultaneous determination of methylmercury (MeHg+) and inorganic mercury (iHg) species in seafood. The study focused on the extraction and quantification of MeHg+ by liquid chromatography coupled to on-line UV irradiation and cold vapour atomic fluorescence spectroscopy (LC-UV-HG-AFS), using HCl 4 mol L-1 as extractant agent.

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Application of Central Composite Design (CCD) for the Optimization of Ultrasound-assisted Extraction (UAE) of Phenolics from Corn (Zea mays)
Widiastuti Setyaningsih, 1,2 Erwan Duros, 3 Ceferino Carrera, 4 Miguel Palma, 2 Carmelo G. Barroso 2

A new Ultrasound-assisted Extraction (UAE) of phenolic compounds from corn (Zea mays) has been optimized by means of chemometrics tool. The proposed method was validated and successfully applied to the analysis of phenolics content in several corn cultivars.

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Showing Results 1 - 10 of 74
Scientific News
Utilizing Fast HPLC Screening Methods for the Detection of Steroids
Analysis of steroids improved by choosing the optimal HPLC column for the separation.
Benefits of SPE for the Analysis of Mycotoxins
Fast and cost-effective sample preparation is essential for the analysis of mycotoxins in food and feed.
Pharmaceuticals, Personal Care Products Could Taint Swimming Pools
A new study suggests pharmaceuticals and chemicals from personal care products end up in swimming pools, possibly interacting with chlorine to produce disinfection byproducts with unknown properties and health effects.
More Efficient, Sensitive Estrogen Detection Developed
A new method for detecting trace amounts of estrogen in small samples that holds the potential to improve research into cancer and other diseases has been developed.
Chestnuts Roasting On An Open Fire
ORNL work with scientists funded by The American Chestnut Foundation confirms increased blight-resistance of former forest giant.
Metabolomics Data Normalization with EigenMS
In this study, a singular value decomposition-based method, called EigenMS, for normalization of metabolomics data was tested.
Agilent Technologies - Making Better GC Connections
Improving GC connections for reliable, robust and reproducible results.
How to Achieve High-Speed, High-Resolution Glycan Mapping for mAb Characterization
The full characterization of biotherapeutics is required by regulatory authorities as properties such as safety, efficacy and the serum half-life of therapeutic proteins can be affected by differences in their glycosylation pattern.
Odour That Smells Like Blood
The study, conducted at Kolmården Wildlife Park, found that for the animals, one particular component of blood odour was just as engaging as the blood odour itself.
Bridging Quantitative Analysis and Untargeted Metabolomics
Untargeted metabolomics has become a popular tool in metabolite biomarker discovery and in the evaluation of metabolic pathway changes associated with disease.
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