Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

A genetic ID card to certify the quality of Andalusian goat’s cheese

22.08.2006
The study of the Department of Microbiology of the UGR, under the supervision of Professor Manuel Martínez Bueno, intends to characterize the bacterial strains in the home-produced cheeses Cueva de la Magahá and Montefrieño (Granada), as well as from Aracena (Huelva).

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.

Safe food

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.

Antonio Marín Ruiz | alfa
Further information:
http://www.ugr.es
http://prensa.ugr.es/prensa/research/index.php

More articles from Agricultural and Forestry Science:

nachricht Plasma-zapping process could yield trans fat-free soybean oil product
02.12.2016 | Purdue University

nachricht New findings about the deformed wing virus, a major factor in honey bee colony mortality
11.11.2016 | Veterinärmedizinische Universität Wien

All articles from Agricultural and Forestry Science >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Significantly more productivity in USP lasers

In recent years, lasers with ultrashort pulses (USP) down to the femtosecond range have become established on an industrial scale. They could advance some applications with the much-lauded “cold ablation” – if that meant they would then achieve more throughput. A new generation of process engineering that will address this issue in particular will be discussed at the “4th UKP Workshop – Ultrafast Laser Technology” in April 2017.

Even back in the 1990s, scientists were comparing materials processing with nanosecond, picosecond and femtosesecond pulses. The result was surprising:...

Im Focus: Shape matters when light meets atom

Mapping the interaction of a single atom with a single photon may inform design of quantum devices

Have you ever wondered how you see the world? Vision is about photons of light, which are packets of energy, interacting with the atoms or molecules in what...

Im Focus: Novel silicon etching technique crafts 3-D gradient refractive index micro-optics

A multi-institutional research collaboration has created a novel approach for fabricating three-dimensional micro-optics through the shape-defined formation of porous silicon (PSi), with broad impacts in integrated optoelectronics, imaging, and photovoltaics.

Working with colleagues at Stanford and The Dow Chemical Company, researchers at the University of Illinois at Urbana-Champaign fabricated 3-D birefringent...

Im Focus: Quantum Particles Form Droplets

In experiments with magnetic atoms conducted at extremely low temperatures, scientists have demonstrated a unique phase of matter: The atoms form a new type of quantum liquid or quantum droplet state. These so called quantum droplets may preserve their form in absence of external confinement because of quantum effects. The joint team of experimental physicists from Innsbruck and theoretical physicists from Hannover report on their findings in the journal Physical Review X.

“Our Quantum droplets are in the gas phase but they still drop like a rock,” explains experimental physicist Francesca Ferlaino when talking about the...

Im Focus: MADMAX: Max Planck Institute for Physics takes up axion research

The Max Planck Institute for Physics (MPP) is opening up a new research field. A workshop from November 21 - 22, 2016 will mark the start of activities for an innovative axion experiment. Axions are still only purely hypothetical particles. Their detection could solve two fundamental problems in particle physics: What dark matter consists of and why it has not yet been possible to directly observe a CP violation for the strong interaction.

The “MADMAX” project is the MPP’s commitment to axion research. Axions are so far only a theoretical prediction and are difficult to detect: on the one hand,...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

ICTM Conference 2017: Production technology for turbomachine manufacturing of the future

16.11.2016 | Event News

Innovation Day Laser Technology – Laser Additive Manufacturing

01.11.2016 | Event News

#IC2S2: When Social Science meets Computer Science - GESIS will host the IC2S2 conference 2017

14.10.2016 | Event News

 
Latest News

Closing the carbon loop

08.12.2016 | Life Sciences

Applicability of dynamic facilitation theory to binary hard disk systems

08.12.2016 | Physics and Astronomy

Scientists track chemical and structural evolution of catalytic nanoparticles in 3-D

08.12.2016 | Materials Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>