نتایج جستجو برای: pcr additives

تعداد نتایج: 191490  

A. Arefnia M. A. Arjomand, M. Gharib M. R. Abdi

Use of soft clay soils in construction activities has faced many problems. Some improvement, stabilization, and reinforcement methods is required to use these soils in body of roads, sub-foundations and embankments. In this research, the effect of chitin nanofiber and rice husk ash as additives on the behavioral properties and bearing resistance of soft clay soils by considering the processing ...

Journal: :Applied and environmental microbiology 2003
Markus Tieking Maher Korakli Matthias A Ehrmann Michael G Gänzle Rudi F Vogel

EPS formed by lactobacilli in situ during sourdough fermentation may replace hydrocolloids currently used as texturizing, antistaling, or prebiotic additives in bread production. In this study, a screening of >100 strains of cereal-associated and intestinal lactic acid bacteria was performed for the production of exopolysaccharides (EPS) from sucrose. Fifteen strains produced fructan, and four ...

Journal: :Journal of forensic sciences 2005
Steve Smith Phillip A Morin

DNA extraction from trace samples or noninvasively collected samples often results in the recovery of low concentration solutions of DNA that are prone to DNA degradation or other loss. Because of the difficulty in obtaining such samples, and their potentially high value in wildlife and forensic studies, it is critical that optimal methods are employed for their long-term storage. We assessed t...

Journal: :Microbes and environments 2008
Seishi Ikeda Hirohito Tsurumaru Satoshi Wakai Chiaki Noritake Keisuke Fujishiro Mariko Akasaka Katsuhiko Ando

A series of additives were evaluated for their effects on improving the yield and quality of DNA extracted from recalcitrant soils. Levels of possible DNA contaminants in these supplements were also assessed. Three of the additives (skim milk, casein, and RNA) were shown to be effective in improving the stable extraction of DNA from recalcitrant samples of Andosol. However, whereas skim milk ap...

Journal: :iranian journal of veterinary research 2007
m. arab abousadi e. rowghani m. ebrahimi honarmand

three-hundred and twenty 7-day-old ross 308-strain broiler chickens were fed diets containing 0 or 125 ppb aflatoxin b 1 (afb1) from 7 to 28 days of age. sodium bentonite (0.5%), yeast (saccharomyces cervisiae) 0.2%, hydrated sodium calcium aluminosilicate (hscas) (0.5%), ammonia (0.5%), formycine (0.1%), and toxiban (0.1%) were added to the basal diet, as fed basis to determine the effects of ...

Journal: :Public health nutrition 1998
J Lambe J Kearney W Becker K Hulshof A Dunne M J Gibney

OBJECTIVE To examine the hypothesis that there is sufficient agreement between percentage of households purchasing selected foods using household budget surveys and percentage of individuals consuming these foods as determined in individual-based surveys to allow the former to act as a surrogate for the latter when estimating food chemical intakes using household budget data. DESIGN Database ...

2013
Wendee Nicole

The April 2013 News article “Secret Ingredients: Who Knows What’s in Your Food?” [Environ Health Perspect 121:A126–A133 (2013] included a simplified version of Figure 1B from Neltner et al. [Navigating the U.S. food additive regulatory program. Compr Rev Food Sci Food Saf 10(6):342–368 (2011)]. In simplifying the figure, EHP introduced errors. We furthermore later determined that Figure 2 from ...

Journal: :Molecules 2017
Andrey A Gusev Antonios C Psarras Konstantinos S Triantafyllidis Angelos A Lappas Paul A Diddams

ZSM-5-containing catalytic additives are widely used in oil refineries to boost light olefin production and improve gasoline octanes in the Fluid Catalytic Cracking (FCC) process. Under the hydrothermal conditions present in the FCC regenerator (typically >700 °C and >8% steam), FCC catalysts and additives are subject to deactivation. Zeolites (e.g., Rare Earth USY in the base catalyst and ZSM-...

2018
Erna JZ Krüsemann Wouter F Visser Johannes WJM Cremers Jeroen LA Pennings Reinskje Talhout

OBJECTIVES This study combines chemical analysis and flavour descriptions of flavour additives used in tobacco products, and provides a starting point to build an extensive library of flavour components, useful for product surveillance. METHODS Headspace gas chromatography-mass spectrometry (GC-MS) was used to compare 22 commercially available tobacco products (cigarettes and roll-your-own) e...

2002
Petra W. Heijnen Paulien M. Herder Johan Grievink

The aim of the research project was to identify ways to maximise the flexibility of the plant by varying equipment utilization, while guaranteeing a certain level of profit. A case study was conducted at a company that makes various types of food additives, which are produced in a multi-product multipurpose batch plant. At the time of the research, market demand was exceeding the company's prod...

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