نتایج جستجو برای: α-spectrometry

تعداد نتایج: 260407  

Ali Mehdinia, Hamid Rezaei, Neda Sheijooni Fumani,

The essential oil extracted from the soft coral of Sinularia sp. have been extracted by soxhlet and analyzed by gas chromatography coupled to mass spectrometry (GC–MS). The principal compounds were found to be δ-Cadinene (12.4%), α-terpinene (10.7%) and α-Muurolene (8.3%). It is worth mentioning the presence of sesquiterpenes and diterpenes as main compounds of the essential oil. This is the fi...

Objective(s): Resistance to medications is one of the main complications in chemotherapy of cancer. It has been shown that some multidrug resistant cancer cells indicate more sensitivity against cytotoxic effects of TNF-α compared to their parental cells. Our previous findings indicated vulnerability of the mitoxantrone-resistant breast cancer cells MCF-7/MX to cell de...

A. A. Salehi K. Naddafi M. Gooniband Shooshtari M. Karimi M. R. Deevband M. R. Kardan M. Yunesian N. Fathabadi R. Nabizadeh Nodehi S. S. Hosseini

Introduction: Among High Level Natural Radiation Areas (HLNRAs) all over the world, the northern coastal city of Ramsar has been considered enormously important. People living in this area have been exposed by several sources, one of which could be foodstuff. However, many studies have been carried out to measure the environmental radioactivity in Ramsar, but no survey has been...

2013
Guilherme Dotto Brand Helainy Cristina de Matos Gabriel Costa Nunes da Cruz Nilza do Carmo Fontes Marcelo Buzzi Jaime Moritz Brum

OBJECTIVES High-throughput mass spectrometry methods have been developed to screen newborns for lysosomal storage disorders, allowing the implementation of newborn screening pilot studies in North America and Europe. It is currently feasible to diagnose Pompe, Fabry, Gaucher, Krabbe, and Niemann-Pick A/B diseases, as well as mucopolysaccharidosis I, by tandem mass spectrometry in dried blood sp...

2017
Marta Kaszowska Elena de Mendoza-Barberá Anna Maciejewska Susana Merino Czeslaw Lugowski Juan M. Tomás

The chemical structure and genomics of the lipopolysaccharide (LPS) core oligosaccharide of pathogenic Edwardsiella tarda strain EIB 202 were studied for the first time. The complete gene assignment for all LPS core biosynthesis gene functions was acquired. The complete structure of core oligosaccharide was investigated by ¹H and 13C nuclear magnetic resonance (NMR) spectroscopy, electrospray i...

Journal: :Asian journal of biotechnology and bioresource techonology 2023

Aims: This study aimed to the extraction of Melaleuca cajuputi essential oils by microwave-assisted method. The comparison for productivity method and traditional hydro-distillation was also established figure out optimum condition isolation process.
 Methodology: Microwave-assisted employed oils. components contained in were analyzed gas chromatography-mass spectrometry. Standard methods ...

2014
Karl Syson Clare E. M. Stevenson Abdul M. Rashid Gerhard Saalbach Minhong Tang Anne Tuukkanen Dmitri I. Svergun Stephen G. Withers David M. Lawson Stephen Bornemann

GlgE (EC 2.4.99.16) is an α-maltose 1-phosphate:(1→4)-α-d-glucan 4-α-d-maltosyltransferase of the CAZy glycoside hydrolase 13_3 family. It is the defining enzyme of a bacterial α-glucan biosynthetic pathway and is a genetically validated anti-tuberculosis target. It catalyzes the α-retaining transfer of maltosyl units from α-maltose 1-phosphate to maltooligosaccharides and is predicted to use a...

2017
Matthew W. Turner John R. Cort Owen M. McDougal

Nine publically available biosafety protocols for safely handling conotoxin peptides were tested to evaluate their decontamination efficacy. Circular dichroism (CD) spectroscopy and mass spectrometry (MS) were used to assess the effect of each chemical treatment on the secondary and primary structure of α-CTx MII (L10V, E11A). Of the nine decontamination methods tested, treatment with 1% (m/v) ...

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