Concept
Saliva
Related publications (12)
Difference in astringency of the main pea protein fractions
Francesco Stellacci, Hanna Fanny Clarisse Lesme
Interactions between food and saliva govern complex mouthfeel perceptions such as astringency. Herein, we present a study of the interactions of salivary proteins with the main pea protein fractions that are obtained by isoelectric and salt precipitation ( ...
London2023Microfluidic devices for automated analysis of ingested bacteria in the Caenorhabditis elegans intestine
In this thesis, we explored on-chip high-resolution imaging of the fate of intestinal bacteria and bacterial products in Caenorhabditis elegans (C. elegans). In the first part, we carried out high-resolution z-stack fluorescent imaging of Red Fluorescent P ...
EPFL2023On the durability of surgical masks after simulated handling and wear
Jian Wang, Véronique Michaud, Vincent Marc Varanges, Baris Çaglar, Yann Albert Gérard Lebaupin, René M. Rossi
After the spread of COVID-19, surgical masks became highly recommended to the public. They tend to be handled and used multiple times, which may impact their performance. To evaluate this risk, surgical masks of Type IIR were submitted to four simulated tr ...
2022An In Vivo Microfluidic Study of Bacterial Load Dynamics and Absorption in the C. elegans Intestine
Martinus Gijs, Thomas Lehnert, Vittorio Viri, Maël Arveiler
Caenorhabditiselegans (C. elegans) has gained importance as a model for studying host-microbiota interactions and bacterial infections related to human pathogens. Assessing the fate of ingested bacteria in the worm's intestine is therefore of great interes ...
MDPI2021A Review: Electrochemical Biosensors for Oral Cancer
Hubert Girault, Ligang Wang, Tzu-En Lin, Sorour Darvishi
Oral cancer poses a serious threat worldwide owing to its soaring case-fatality rate and its metastatic characteristics of spreading to the other parts of the body. Despite the recent breakthroughs in biomedical sciences, the detection of oral cancer at an ...
2020Mid-infrared spectroscopy for gases and liquids based on quantum cascade technologies
Nico de Rooij, Hans Peter Herzig, Jérôme Faist, Lubos Hvozdara, Philip Wägli, Yu-Chi Chang
In this paper we present two compact, quantum cascade laser absorption spectroscopy based, sensors developed for trace substance detection in gases and liquids. The gas sensor, in its most integrated version, represents the first system combining a quantum ...
Royal Soc Chemistry2014Electrochemical Pseudo-Titration of Water-Soluble Antioxidants
Hubert Girault, Andreas Stephan Lesch, Fernando Cortes Salazar, Alice Adei Neequaye
An amperometric test for the antioxidant power (AOP) of biological and food samples is presented. The gist of the method is to measure by linear sweep voltammetry the anodic current produced during the oxidation of the labile species present in the sample ...
Wiley-Blackwell2013Microfluidic Droplet-Based Liquid–Liquid Extraction and On-Chip IR Spectroscopy Detection of Cocaine in Human Saliva
Nico de Rooij, Hans Peter Herzig, Lubos Hvozdara, Philip Wägli, Yu-Chi Chang
We present a portable microsystem to quantitatively detect cocaine in human saliva. In this system, we combine a microfluidic-based multiphase liquid-liquid extraction method to transfer cocaine continuously from IR-light-absorbing saliva to an IR-transpar ...
Amer Chemical Soc2013Droplet-based Liquid-Liquid Extraction and On-Chip IR-Waveguide-Spectroscopy Detection of Cocaine in Human Saliva
Hans Peter Herzig, Peter Van der Wal, Lubos Hvozdara, Philip Wägli, Yu-Chi Chang
We present a portable microsystem to quantitatively detect cocaine in human saliva. The chip combines a simple microfluidic method for multiphase liquid-liquid extraction to transfer cocaine from IR-light absorbing saliva to an IRtransparent solvent with t ...
2012Single Mode Mid-infrared Waveguide for Evanescent Sensor Scheme in Liquids
Hans Peter Herzig, Vincent Paeder, Lubos Hvozdara, Philip Wägli, Yu-Chi Chang
A Si/Ge based, single mode, mid-infrared optical waveguide, is used as an evanescent sensor in liquid matrix. The selectivity is achieved by the use of quantum cascade lasers (QCLs) tuned to the maximum absorption of a given analyte. The cocaine detection ...
2011