For the prognosis of the flavor stability of beer the electron spin resonance (ESR) spectroscopy has been used for the determination of the lag time. The spin-trap reagent (PBN) used to assess the lag time has a significant impact on the results due to an increasing pH-value during the analysis, resulting in a falsification of the rations in a beer sample. <br><br> <strong>Technology</strong><br> We offer a novel method for the assessment of the endogenous antioxidative potential (EAP) of beer and other beverages using a different spin-trap reagent (POBN) in lower concentrations, which results in a beer matrix dependent, linear correlation between the SO2-content and the EAP-value. This correlation offers a new beneficial index number for the evaluation of the beer specific flavor stability (BAX: Beverage Antioxidative IndeX). The BAX provides additional information about the anti- and pro-oxidative properties of the beer matrix independent on the SO2-content. The BAX is affected by the content of metallic ions, hop-acids, sugar, proteins, intermediate Maillard reaction products, etc. and gives information about the consumption rate of the existing antioxidative potential during storage.<br><br>
email@example.com | TechnologieAllianz e.V.
New Lithium Salts of Pentafluorophenylamide Anions as Electrolytes in Lithium Ionic Batteries
18.04.2017 | TechnologieAllianz e.V.
Gratings on glass surfaces
28.03.2017 | TechnologieAllianz e.V.
Researchers at the University of New Hampshire have captured a difficult-to-view singular event involving "magnetic reconnection"--the process by which sparse particles and energy around Earth collide producing a quick but mighty explosion--in the Earth's magnetotail, the magnetic environment that trails behind the planet.
Magnetic reconnection has remained a bit of a mystery to scientists. They know it exists and have documented the effects that the energy explosions can...
Biochips have been developed at TU Wien (Vienna), on which tissue can be produced and examined. This allows supplying the tissue with different substances in a very controlled way.
Cultivating human cells in the Petri dish is not a big challenge today. Producing artificial tissue, however, permeated by fine blood vessels, is a much more...
Faster and secure data communication: This is the goal of a new joint project involving physicists from the University of Würzburg. The German Federal Ministry of Education and Research funds the project with 14.8 million euro.
In our digital world data security and secure communication are becoming more and more important. Quantum communication is a promising approach to achieve...
On Saturday, 10 November 2018, the research icebreaker Polarstern will leave its homeport of Bremerhaven, bound for Cape Town, South Africa.
When choosing materials to make something, trade-offs need to be made between a host of properties, such as thickness, stiffness and weight. Depending on the application in question, finding just the right balance is the difference between success and failure
Now, a team of Penn Engineers has demonstrated a new material they call "nanocardboard," an ultrathin equivalent of corrugated paper cardboard. A square...
19.11.2018 | Event News
09.11.2018 | Event News
06.11.2018 | Event News
19.11.2018 | Materials Sciences
19.11.2018 | Information Technology
19.11.2018 | Life Sciences