AZTI-Tecnalia obtains isomers of conjugated linoleic acid from micro-organisms
At the congress of the Grupo de Microbiología Industrial y Biotecnología Microbiana of the SEM (Sociedad Española de Microbiología) AZTI-Tecnalia has presented their research work on the production of isomers of conjugated linoleic acid from linoleic acid by using micro-organisms.
Conjugated linoleic acid is a mixture of isomers, some of which have functional properties and, thereby, are considered to be molecules of high added value. Amongst the possible isomers, the 9-cis, 11-trans 18:2 and 10-trans, 12-cis 18:2 configurations have a positive effect on the reduction of body fat and this is why they are of such interest. These fatty acids are currently produced by chemical synthesis and their addition to what are called functional foodstuffs is common due to their health-giving properties.
The aim of the research undertaken by AZTI-Tecnalia was to study the efficiency of certain lactic acid bacteria on the production of potentially functional fatty acids by means of the isomerisation of linoleic acid into its conjugated isomers. Results indicate that, amongst the lactic acid bacteria analysed, at least one of them can conjugate the double bonds of the linoleic acid, thus producing two isomers: 9-cis, 11-trans 18:2 and 9-trans, 11-trans 18:2. The transformation of the linoleic acid into its conjugates is selective when micro-organisms are employed, thus producing just two of the isomers from all those possible. The production yields obtained were low and, because of this, further research is being carried out to improve them.
In conclusion, the stereospecific production of certain conjugated isomers of linoleic acid with functional properties is possible, by using micro-organisms accepted as safe in the preparation of foodstuffs. Thus, it is to be hoped that, by means of using these micro-organisms, functional foodstuffs can be prepared without recourse to chemical synthesis.
Irati Kortabitarte | alfa
The most recent press releases about innovation >>>
Die letzten 5 Focus-News des innovations-reports im Überblick:
An international team of scientists has proposed a new multi-disciplinary approach in which an array of new technologies will allow us to map biodiversity and the risks that wildlife is facing at the scale of whole landscapes. The findings are published in Nature Ecology and Evolution. This international research is led by the Kunming Institute of Zoology from China, University of East Anglia, University of Leicester and the Leibniz Institute for Zoo and Wildlife Research.
Using a combination of satellite and ground data, the team proposes that it is now possible to map biodiversity with an accuracy that has not been previously...
Heatwaves in the Arctic, longer periods of vegetation in Europe, severe floods in West Africa – starting in 2021, scientists want to explore the emissions of the greenhouse gas methane with the German-French satellite MERLIN. This is made possible by a new robust laser system of the Fraunhofer Institute for Laser Technology ILT in Aachen, which achieves unprecedented measurement accuracy.
Methane is primarily the result of the decomposition of organic matter. The gas has a 25 times greater warming potential than carbon dioxide, but is not as...
Hydrogen is regarded as the energy source of the future: It is produced with solar power and can be used to generate heat and electricity in fuel cells. Empa researchers have now succeeded in decoding the movement of hydrogen ions in crystals – a key step towards more efficient energy conversion in the hydrogen industry of tomorrow.
As charge carriers, electrons and ions play the leading role in electrochemical energy storage devices and converters such as batteries and fuel cells. Proton...
Scientists from the Excellence Cluster Universe at the Ludwig-Maximilians-Universität Munich have establised "Cosmowebportal", a unique data centre for cosmological simulations located at the Leibniz Supercomputing Centre (LRZ) of the Bavarian Academy of Sciences. The complete results of a series of large hydrodynamical cosmological simulations are available, with data volumes typically exceeding several hundred terabytes. Scientists worldwide can interactively explore these complex simulations via a web interface and directly access the results.
With current telescopes, scientists can observe our Universe’s galaxies and galaxy clusters and their distribution along an invisible cosmic web. From the...
Temperature measurements possible even on the smallest scale / Molecular ruby for use in material sciences, biology, and medicine
Chemists at Johannes Gutenberg University Mainz (JGU) in cooperation with researchers of the German Federal Institute for Materials Research and Testing (BAM)...