نتایج جستجو برای: dna extraction

تعداد نتایج: 663961  

2012
H.F. Santos F.L. Carmo D.C.A. Leite H.E. Jesus P. De Carvalho Maalouf C. Almeida A.U. Soriano D. Altomari L. Suhett V. Vólaro E. Valoni M. Francisco J. Vieira R. Rocha B.L. Sardinha L.B. Mendes R.R. João B. Lacava R.F. Jesus G.V. Sebastian A. Pessoa J.D. van Elsas R.P. Rezende D.O. Pires G. Duarte C.B. Castro A.S. Rosado R.S. Peixoto

This study aimed to test different protocols for the extraction of microbial DNA from the coral Mussismilia harttii. Four different commercial kits were tested, three of them based on methods for DNA extraction from soil (FastDNA SPIN Kit for soil, MP Bio, PowerSoil DNA Isolation Kit, MoBio, and ZR Soil Microbe DNA Kit, Zymo Research) and one kit for DNA extraction from plants (UltraClean Plant...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید بهشتی - دانشکده علوم 1372

a simple, sensitive and selective method for solvent extraction and spectrophotemetric determination of lanthanum (ii) europium (iii), and cerium (iii) is described , the rare earth metals are extracted into chloroform solution of n-phenylbenzohydroxamic acid (pbha) at ph 9-10 various parameters are studied to optimize the extraction conditions. the molar absorptivity is found to increase from ...

2014
P. D. Luka

Aim: Formalin fixing and paraffin embedding of tissue samples is one of the techniques for preserving the structural integrity of cells for a very long time. However, extraction and analysis of genomic material from formalin fixed tissue (FFT) remains a challenge despite numerous attempts to develop a more effective method. The success of polymerase chain reaction (PCR) depends on the quality o...

2006
Changhyun Roh Francois Villatte Byung-Gee Kim Rolf D. Schmid

An important prerequisite for a successful metagenome library construction is an efficient extraction procedure for DNA out of environmental samples. In this study we compared three indirect and four direct extraction methods, including a commercial kit, in terms of DNA yield, purity and time requirement. A special focus was set on methods which are appropriate for the extraction of environment...

2012
Chiachi Hwang Fangqiong Ling Gary L. Andersen Mark W. LeChevallier Wen-Tso Liu

While drinking water biofilms have been characterized in various drinking water distribution systems (DWDS), little is known about the impact of different DNA extraction methods on the subsequent analysis of microbial communities in drinking water biofilms. Since different DNA extraction methods have been shown to affect the outcome of microbial community analysis in other environments, it is n...

2013
Rebecca C. Holmberg Alissa Gindlesperger Tinsley Stokes David Lopez Lynn Hyman Michelle Freed Phil Belgrader Jeanne Harvey Zheng Li

Due to the low percentage of fetal DNA present in maternal plasma (< 10%) during early gestation, efficient extraction processes are required for successful downstream detection applications in non-invasive prenatal diagnostic testing. In this study, two extraction methods using similar chemistries but different workflows were compared for isolation efficiency and percent fetal DNA recovery. Th...

2010
Tomoko Ohta Sampo Pyysalo Makoto Miwa Jun'ichi Tsujii

BACKGROUND We consider the task of automatically extracting DNA methylation events from the biomedical domain literature. DNA methylation is a key mechanism of epigenetic control of gene expression and implicated in many cancers, but there has been little study of automatic information extraction for DNA methylation. RESULTS We present an annotation scheme for DNA methylation following the re...

Journal: :Analytical chemistry 2016
Omprakash Nacham Kevin D Clark Jared L Anderson

The determination of extremely small quantities of DNA from complex biological sample matrices represents a significant bottleneck in nucleic acid analysis. In this study, polymeric ionic liquid (PIL)-based solid-phase microextraction (SPME) was applied for the extraction and purification of DNA from crude bacterial cell lysate with subsequent quantification by real-time PCR (qPCR) analysis. Us...

Journal: :Applied and environmental microbiology 1996
J Zhou M A Bruns J M Tiedje

A simple, rapid method for bacterial lysis and direct extraction of DNA from soils with minimal shearing was developed to address the risk of chimera formation from small template DNA during subsequent PCR. The method was based on lysis with a high-salt extraction buffer (1.5 M NaCl) and extended heating (2 to 3 h) of the soil suspension in the presence of sodium dodecyl sulfate (SDS), hexadecy...

Journal: :Genetics and molecular research : GMR 2013
G Meru D McDowell V Waters A Seibel J Davis C McGregor

Genomic tools for watermelon breeding are becoming increasingly available. A high throughput genotyping system would facilitate the use of DNA markers in marker-assisted selection. DNA extraction from leaf material requires prior seed germination and is often time-consuming and cost prohibitive. In an effort to develop a more efficient system, watermelon seeds of several genotypes and various s...

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