The Experts below are selected from a list of 360 Experts worldwide ranked by ideXlab platform

Alfons Jordan - One of the best experts on this subject based on the ideXlab platform.

  • on line monitoring of volatile organic compounds at pptv levels by means of proton transfer reaction mass spectrometry ptr ms medical applications Food control and environmental Research
    International Journal of Mass Spectrometry and Ion Processes, 1998
    Co-Authors: W Lindinger, A Hansel, Alfons Jordan
    Abstract:

    Abstract A proton transfer reaction mass spectrometer (PTR-MS) system has been developed which allows for on-line measurements of trace components with concentrations as low as a few pptv. The method is based on reactions of H 3 O + ions, which perform non-dissociative proton transfer to most of the common volatile organic compounds (VOCs) but do not react with any of the components present in clean air. Medical applications by means of breath analysis allow for monitoring of metabolic processes in the human body, and examples of Food Research are discussed on the basis of VOC emissions from fruit, coffee and meat. Environmental applications include investigations of VOC emissions from decaying biomatter which have been found to be an important source for tropospheric acetone, methanol and ethanol. On-line monitoring of the diurnal variations of VOCs in the troposphere yield data demonstrating the present sensitivity of PTR-MS to be in the range of a few pptv. Finally, PTR-MS has proven to be an ideal tool to measure Henry's law constants and their dependencies on temperature as well as on the salt content of water.

  • on line monitoring of volatile organic compounds at pptv levels by means of proton transfer reaction mass spectrometry ptr ms medical applications Food control and environmental Research
    International Journal of Mass Spectrometry and Ion Processes, 1998
    Co-Authors: W Lindinger, A Hansel, Alfons Jordan
    Abstract:

    Abstract A proton transfer reaction mass spectrometer (PTR-MS) system has been developed which allows for on-line measurements of trace components with concentrations as low as a few pptv. The method is based on reactions of H 3 O + ions, which perform non-dissociative proton transfer to most of the common volatile organic compounds (VOCs) but do not react with any of the components present in clean air. Medical applications by means of breath analysis allow for monitoring of metabolic processes in the human body, and examples of Food Research are discussed on the basis of VOC emissions from fruit, coffee and meat. Environmental applications include investigations of VOC emissions from decaying biomatter which have been found to be an important source for tropospheric acetone, methanol and ethanol. On-line monitoring of the diurnal variations of VOCs in the troposphere yield data demonstrating the present sensitivity of PTR-MS to be in the range of a few pptv. Finally, PTR-MS has proven to be an ideal tool to measure Henry's law constants and their dependencies on temperature as well as on the salt content of water.

  • proton transfer reaction mass spectrometry ptr ms on line monitoring of volatile organic compounds at pptv levels
    Chemical Society Reviews, 1998
    Co-Authors: W Lindinger, Alfons Jordan
    Abstract:

    A system for on-line measurements of trace components with concentrations as low as a few pptv has been developed on the basis of proton transfer reactions. Medical applications by means of breath analysis allow the monitoring of metabolic processes in the human body, and examples of Food Research include investigations of volatile organic compound (VOC) emissions from fruit, coffee and meat. Investigations of VOC emissions from decaying biomatter and on-line monitoring of the diurnal variations of VOCs in ambient air are typical examples of environmental applications.

W Lindinger - One of the best experts on this subject based on the ideXlab platform.

  • on line monitoring of volatile organic compounds at pptv levels by means of proton transfer reaction mass spectrometry ptr ms medical applications Food control and environmental Research
    International Journal of Mass Spectrometry and Ion Processes, 1998
    Co-Authors: W Lindinger, A Hansel, Alfons Jordan
    Abstract:

    Abstract A proton transfer reaction mass spectrometer (PTR-MS) system has been developed which allows for on-line measurements of trace components with concentrations as low as a few pptv. The method is based on reactions of H 3 O + ions, which perform non-dissociative proton transfer to most of the common volatile organic compounds (VOCs) but do not react with any of the components present in clean air. Medical applications by means of breath analysis allow for monitoring of metabolic processes in the human body, and examples of Food Research are discussed on the basis of VOC emissions from fruit, coffee and meat. Environmental applications include investigations of VOC emissions from decaying biomatter which have been found to be an important source for tropospheric acetone, methanol and ethanol. On-line monitoring of the diurnal variations of VOCs in the troposphere yield data demonstrating the present sensitivity of PTR-MS to be in the range of a few pptv. Finally, PTR-MS has proven to be an ideal tool to measure Henry's law constants and their dependencies on temperature as well as on the salt content of water.

  • on line monitoring of volatile organic compounds at pptv levels by means of proton transfer reaction mass spectrometry ptr ms medical applications Food control and environmental Research
    International Journal of Mass Spectrometry and Ion Processes, 1998
    Co-Authors: W Lindinger, A Hansel, Alfons Jordan
    Abstract:

    Abstract A proton transfer reaction mass spectrometer (PTR-MS) system has been developed which allows for on-line measurements of trace components with concentrations as low as a few pptv. The method is based on reactions of H 3 O + ions, which perform non-dissociative proton transfer to most of the common volatile organic compounds (VOCs) but do not react with any of the components present in clean air. Medical applications by means of breath analysis allow for monitoring of metabolic processes in the human body, and examples of Food Research are discussed on the basis of VOC emissions from fruit, coffee and meat. Environmental applications include investigations of VOC emissions from decaying biomatter which have been found to be an important source for tropospheric acetone, methanol and ethanol. On-line monitoring of the diurnal variations of VOCs in the troposphere yield data demonstrating the present sensitivity of PTR-MS to be in the range of a few pptv. Finally, PTR-MS has proven to be an ideal tool to measure Henry's law constants and their dependencies on temperature as well as on the salt content of water.

  • proton transfer reaction mass spectrometry ptr ms on line monitoring of volatile organic compounds at pptv levels
    Chemical Society Reviews, 1998
    Co-Authors: W Lindinger, Alfons Jordan
    Abstract:

    A system for on-line measurements of trace components with concentrations as low as a few pptv has been developed on the basis of proton transfer reactions. Medical applications by means of breath analysis allow the monitoring of metabolic processes in the human body, and examples of Food Research include investigations of volatile organic compound (VOC) emissions from fruit, coffee and meat. Investigations of VOC emissions from decaying biomatter and on-line monitoring of the diurnal variations of VOCs in ambient air are typical examples of environmental applications.

G. W. White - One of the best experts on this subject based on the ideXlab platform.

  • Rheology in Food Research
    International Journal of Food Science and Technology, 2007
    Co-Authors: G. W. White
    Abstract:

    Summary. A survey of rheology and its applications in the Food industry is presented. the subject is considered under the headings of psycho-rheology, basic concepts in rheology, instrumentation for Research, time-dependent materials and methods of interpretation (eighty-eight references).

Laurie P Whitsel - One of the best experts on this subject based on the ideXlab platform.

  • stakeholder discussion to reduce population wide sodium intake and decrease sodium in the Food supply a conference report from the american heart association sodium conference 2013 planning group
    Circulation, 2014
    Co-Authors: Elliott M Antman, Lawrence J Appel, Douglas Balentine, Rachel K Johnson, Lyn M Steffen, Emily Ann Miller, Antigoni Pappas, Kimberly F Stitzel, Dorothea K Vafiadis, Laurie P Whitsel
    Abstract:

    Background—A 2-day interactive forum was convened to discuss the current status and future implications of reducing sodium in the Food supply and to identify opportunities for stakeholder collaboration. Methods and Results—Participants included 128 stakeholders engaged in Food Research and development, Food manufacturing and retail, restaurant and Food service operations, regulatory and legislative activities, public health initiatives, healthcare, academia and scientific Research, and data monitoring and surveillance. Presentation topics included scientific evidence for sodium reduction and public health policy recommendations; consumer sodium intakes, attitudes, and behaviors; Food technologies and solutions for sodium reduction and sensory implications; experiences of the Food and dining industries; and translation and implementation of sodium intake recommendations. Facilitated breakout sessions were conducted to allow for sharing of current practices, insights, and expertise. Conclusions—A well-estab...

Daniel Granato - One of the best experts on this subject based on the ideXlab platform.

  • chemical composition sensory properties provenance and bioactivity of fruit juices as assessed by chemometrics a critical review and guideline
    Comprehensive Reviews in Food Science and Food Safety, 2014
    Co-Authors: Acacio Antonio Ferreira Zielinski, Charles Windson Isidoro Haminiuk, Cleiton Antonio Nunes, Egon Schnitzler, Saskia M Van Ruth, Daniel Granato
    Abstract:

    The use of univariate, bivariate, and multivariate statistical techniques, such as analysis of variance, multiple comparisons of means, and linear correlations, has spread widely in the area of Food Science and Technology. However, the use of supervised and unsupervised statistical techniques (chemometrics) in order to analyze and model experimental data from physicochemical, sensory, metabolomics, quality control, nutritional, microbiological, and chemical assays in Food Research has gained more space. Therefore, we present here a manuscript with theoretical details, a critical analysis of published work, and a guideline for the reader to check and propose mathematical models of experimental results using the most promising supervised and unsupervised multivariate statistical techniques, namely: principal component analysis, hierarchical cluster analysis, linear discriminant analysis, partial least square regression, k-nearest neighbors, and soft independent modeling of class analogy. In addition, the overall features, advantages, and limitations of such statistical methods are presented and discussed. Published examples are focused on sensory, chemical, and antioxidant activity of a wide range of fruit juices consumed worldwide.