Such cheeses are representative of a traditional production process using raw milk and rennet. Its microbiological richness is higher than that of industrially-produced ones which, although they are completely fit for human consumption, lose part of their distinctive properties.
To characterize the bacterial strains, the research team has used two basic techniques: the traditional methods depending on microbial cultures and the innovative molecular methods of DNA extraction and characterization. Whereas in the first ones you have to wait for bacteria to grow, with the DNA it is possible to do a much faster and exhaustive analysis of all the micro-organisms of the product. These two techniques are complementary.
Through this joint process, the research team obtains the genetic fingertip of the cheeses, an identification of the organisms they are made of and their relation with the organoleptic features (which can be perceived by the senses) of the cheese. The process is done again in the different ripening phases to see how micro-organism populations vary according to time and scientifically establish the development process of the product. Finally, the research work has tried to determine the safety of this kind of cheeses, which is essential to commercialize them.
To this extent, the presence of enterococci, a type of bacterium usually associated to the faecal contamination of food. This kind of bacteria can be naturally found both in human and animal intestine, but they can be beneficial, as they avoid the implementation of pathogen agents. According to the analysis carried out, although these micro-organisms often isolate themselves from traditionally-produced cheeses, their presence is not harmful to health. Furthermore, enterococci also influence positively cheese properties.
“Even in industrially-produced products we have found enterococci, and it does not mean that they are unfit. The analysed goat’s cheeses are completely safe”, specifies Manuel Martínez Bueno, a microbiologist of the University of Granada [http://www.ugr.es]. These results, together to those recently published by another research group of the UGR emphasizing the excellent nutritive properties of goat’s milk, can be a recognition for a cattle sector that, in the last thirty years, have found their livestock reduced to the half.
Filling intercropping info gap
16.11.2017 | American Society of Agronomy
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The formation of stars in distant galaxies is still largely unexplored. For the first time, astron-omers at the University of Geneva have now been able to closely observe a star system six billion light-years away. In doing so, they are confirming earlier simulations made by the University of Zurich. One special effect is made possible by the multiple reflections of images that run through the cosmos like a snake.
Today, astronomers have a pretty accurate idea of how stars were formed in the recent cosmic past. But do these laws also apply to older galaxies? For around a...
Just because someone is smart and well-motivated doesn't mean he or she can learn the visual skills needed to excel at tasks like matching fingerprints, interpreting medical X-rays, keeping track of aircraft on radar displays or forensic face matching.
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Computer Tomography (CT) is a standard procedure in hospitals, but so far, the technology has not been suitable for imaging extremely small objects. In PNAS, a team from the Technical University of Munich (TUM) describes a Nano-CT device that creates three-dimensional x-ray images at resolutions up to 100 nanometers. The first test application: Together with colleagues from the University of Kassel and Helmholtz-Zentrum Geesthacht the researchers analyzed the locomotory system of a velvet worm.
During a CT analysis, the object under investigation is x-rayed and a detector measures the respective amount of radiation absorbed from various angles....
The quantum world is fragile; error correction codes are needed to protect the information stored in a quantum object from the deteriorating effects of noise. Quantum physicists in Innsbruck have developed a protocol to pass quantum information between differently encoded building blocks of a future quantum computer, such as processors and memories. Scientists may use this protocol in the future to build a data bus for quantum computers. The researchers have published their work in the journal Nature Communications.
Future quantum computers will be able to solve problems where conventional computers fail today. We are still far away from any large-scale implementation,...
Pillared graphene would transfer heat better if the theoretical material had a few asymmetric junctions that caused wrinkles, according to Rice University...
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