نتایج جستجو برای: ft ir analysis

تعداد نتایج: 2884900  

Journal: :Nippon Shokuhin Kagaku Kogaku Kaishi 2010

Journal: :Microbiology 2006
Catherine L Winder Stephen V Gordon James Dale R Glyn Hewinson Royston Goodacre

Mycobacterium bovis is the causative agent of bovine tuberculosis. Various genetic typing techniques have been used to trace the reservoirs of infection; however, they have limited success in population genetics and outbreak studies. Fourier-transform infrared spectroscopy (FT-IR) is a rapid phenotypic typing technique, which may be used to generate a metabolic fingerprinting and is increasingl...

Journal: :Journal of microbiological methods 2006
Wei E Huang David Hopper Royston Goodacre Manfred Beckmann Andrew Singer John Draper

Fourier transform-infrared (FT-IR) spectroscopy has become an important tool for rapid analysis of complex biological samples. The infrared absorbance spectrum could be regarded as a "fingerprint" which is characteristic of biochemical substances. In this study, Pseudomonas putida NCIMB 9869 was grown with either 3,5-xylenol or m-cresol as the sole carbon source, each inducing different metabol...

Journal: :Food microbiology 2012
R Davis G Paoli L J Mauer

The importance of tracking outbreaks of foodborne illness and the emergence of new virulent subtypes of foodborne pathogens have created the need for rapid and reliable sub-typing methods for Escherichia coli O157:H7. Fourier transform infrared (FT-IR) spectroscopy coupled with multivariate statistical analyses was used for sub-typing 30 strains of E. coli O157:H7 that had previously been typed...

2011
Milena Povolo Giovanni Cabassi Mauro Profaizer Silvia Lanteri

The analysis of volatile compounds for food products characterization is currently performed by gas chromatographic separation, often coupled with mass spectrometry. In our research the possibility of the application of the Fourier-transform infrared spectroscopy (FT-IR) technique to the cheese volatile fraction evaluation was investigated. An Evolved Gas Analysis (EGA) FT-IR prototype, develop...

2005
Hongjuan Zhao Rachel L. Parry David I. Ellis Gareth W. Griffith Royston Goodacre

Fifteen putative Streptomyces spp. isolated from soil were selected to be analysed using Fourier transform infrared (FT-IR) spectroscopy and 16S rRNA gene sequencing. Four colour groupings (groups 1–4) were obtained and described according to the colour of their substrate mycelia, aerial mycelia, spore mass and pigmentation. The dendrogram constructed using unsupervised cluster analysis of the ...

Journal: :The Analyst 2006
Makoto Otsuka Yuya Fukui Kuniko Otsuka Yukihiro Ozaki

The purpose of this study is to develop a method of evaluating the enzymatic activity of trypsin in a solid-state based on Fourier transform infrared (FT-IR) spectra using chemoinformatics and two-dimensional (2-D) correlation spectroscopy. Crystalline trypsin powders are compressed at 0-4000 kg cm-2 by a compression/tension tester. The enzymatic activity of trypsin is assayed by the kinetic de...

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