Optical measurement of the pH value of intransparent samples under high pressure

Nagel M, Wierschem A, Rauh C, Delgado A (2015)

Publication Type: Journal article

Publication year: 2015

Journal

High Pressure Research Taylor & Francis: STM, Behavioural Science and Public Health Titles / Taylor & Francis

Publisher: Taylor & Francis: STM, Behavioural Science and Public Health Titles / Taylor & Francis

Book Volume: 35

Pages Range: 162-169

Journal Issue: 2

URI: http://www.tandfonline.com/doi/abs/10.1080/08957959.2015.1027202?journalCode=ghpr20

DOI: 10.1080/08957959.2015.1027202

Abstract

We present a method to optically study the pH value of intransparent media under pressure. To this end, we prepare and use immobilized pH-value indicators. The indicators are brought into contact to the medium and their optical signal is read out in reflection with a spectrometer. The pH value and pressure response of the indicator were calibrated with imidazole buffers. As an example for its applicability to foodstuff, we study the pressure-induced pH-value change of fat and meat pastes.

Authors with CRIS profile

Martin Nagel Lehrstuhl für Strömungsmechanik Andreas Wierschem Professur für Hochdruckthermofluiddynamik und Rheologie Cornelia Rauh Lehrstuhl für Strömungsmechanik Antonio Delgado Lehrstuhl für Strömungsmechanik

How to cite

APA:

Nagel, M., Wierschem, A., Rauh, C., & Delgado, A. (2015). Optical measurement of the pH value of intransparent samples under high pressure. High Pressure Research, 35(2), 162-169. https://dx.doi.org/10.1080/08957959.2015.1027202

MLA:

Nagel, Martin, et al. "Optical measurement of the pH value of intransparent samples under high pressure." High Pressure Research 35.2 (2015): 162-169.

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