When a Kopi Luwak coffee bean, the world’s most expensive coffee, comes out the other end of a large cat after it’s been eaten by the animal – called a civet or Luwak – the micro-structural properties of the beans are altered, according to new research by a University of Guelph scientist published in Food Research International.
They’re harder, more brittle and darker in colour than the same type of bean that hasn’t been eaten and digested by the three- to 10-pound tree-climbing animal found in Ethiopia and Indonesia. “The changes in the beans show that during transit through the civet’s GI track, various digestive biochemicals are actually penetrating the outer coffee cherry and reaching the actual bean surface, where a chemical colour change takes place,” said Massimo Marcone, author of “Composition and properties of Indonesian palm civet coffee (Kopi Luwak) and Ethiopian civet coffee.” Marcone is an adjunct professor in the Department of Food Science.
Marcone travelled to Ethiopia and Indonesia in 2003 to collect the rare coffee beans that cost $600 a pound. “During the night, the civet uses its eyesight and smell to seek out and eat only the ripest coffee cherries,” he said. “The coffee cherry fruit is completely digested by the Luwak, but the beans are excreted in their feces.”
Ion treatments for cardiac arrhythmia — Non-invasive alternative to catheter-based surgery
20.01.2017 | GSI Helmholtzzentrum für Schwerionenforschung GmbH
Seeking structure with metagenome sequences
20.01.2017 | DOE/Joint Genome Institute
An important step towards a completely new experimental access to quantum physics has been made at University of Konstanz. The team of scientists headed by...
Yersiniae cause severe intestinal infections. Studies using Yersinia pseudotuberculosis as a model organism aim to elucidate the infection mechanisms of these...
Researchers from the University of Hamburg in Germany, in collaboration with colleagues from the University of Aarhus in Denmark, have synthesized a new superconducting material by growing a few layers of an antiferromagnetic transition-metal chalcogenide on a bismuth-based topological insulator, both being non-superconducting materials.
While superconductivity and magnetism are generally believed to be mutually exclusive, surprisingly, in this new material, superconducting correlations...
Laser-driving of semimetals allows creating novel quasiparticle states within condensed matter systems and switching between different states on ultrafast time scales
Studying properties of fundamental particles in condensed matter systems is a promising approach to quantum field theory. Quasiparticles offer the opportunity...
Among the general public, solar thermal energy is currently associated with dark blue, rectangular collectors on building roofs. Technologies are needed for aesthetically high quality architecture which offer the architect more room for manoeuvre when it comes to low- and plus-energy buildings. With the “ArKol” project, researchers at Fraunhofer ISE together with partners are currently developing two façade collectors for solar thermal energy generation, which permit a high degree of design flexibility: a strip collector for opaque façade sections and a solar thermal blind for transparent sections. The current state of the two developments will be presented at the BAU 2017 trade fair.
As part of the “ArKol – development of architecturally highly integrated façade collectors with heat pipes” project, Fraunhofer ISE together with its partners...
19.01.2017 | Event News
10.01.2017 | Event News
09.01.2017 | Event News
20.01.2017 | Awards Funding
20.01.2017 | Materials Sciences
20.01.2017 | Life Sciences