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.
Six-legged livestock -- sustainable food production
11.05.2017 | Faculty of Science - University of Copenhagen
Elephant Herpes: Super-Shedders Endanger Young Animals
04.05.2017 | Universität Zürich
Staphylococcus aureus is a feared pathogen (MRSA, multi-resistant S. aureus) due to frequent resistances against many antibiotics, especially in hospital infections. Researchers at the Paul-Ehrlich-Institut have identified immunological processes that prevent a successful immune response directed against the pathogenic agent. The delivery of bacterial proteins with RNA adjuvant or messenger RNA (mRNA) into immune cells allows the re-direction of the immune response towards an active defense against S. aureus. This could be of significant importance for the development of an effective vaccine. PLOS Pathogens has published these research results online on 25 May 2017.
Staphylococcus aureus (S. aureus) is a bacterium that colonizes by far more than half of the skin and the mucosa of adults, usually without causing infections....
Physicists from the University of Würzburg are capable of generating identical looking single light particles at the push of a button. Two new studies now demonstrate the potential this method holds.
The quantum computer has fuelled the imagination of scientists for decades: It is based on fundamentally different phenomena than a conventional computer....
An international team of physicists has monitored the scattering behaviour of electrons in a non-conducting material in real-time. Their insights could be beneficial for radiotherapy.
We can refer to electrons in non-conducting materials as ‘sluggish’. Typically, they remain fixed in a location, deep inside an atomic composite. It is hence...
Two-dimensional magnetic structures are regarded as a promising material for new types of data storage, since the magnetic properties of individual molecular building blocks can be investigated and modified. For the first time, researchers have now produced a wafer-thin ferrimagnet, in which molecules with different magnetic centers arrange themselves on a gold surface to form a checkerboard pattern. Scientists at the Swiss Nanoscience Institute at the University of Basel and the Paul Scherrer Institute published their findings in the journal Nature Communications.
Ferrimagnets are composed of two centers which are magnetized at different strengths and point in opposing directions. Two-dimensional, quasi-flat ferrimagnets...
An Australian-Chinese research team has created the world's thinnest hologram, paving the way towards the integration of 3D holography into everyday...
24.05.2017 | Event News
23.05.2017 | Event News
22.05.2017 | Event News
26.05.2017 | Life Sciences
26.05.2017 | Life Sciences
26.05.2017 | Physics and Astronomy