Javier Vioque is a scientific researcher from the Fat Institute (CSIC) in Seville. "We have studied the seeds of six species of lupin (Lupinus sp.) in the south of Spain and we believe that they may represent new sources of quality proteins", he explained to SINC.
The cultivated lupin, a legume which is used as cattle fodder (although its grains are also edible if the bitterness is removed with water and salt), belongs to the Lupinus albus species, but the researchers have focused on six other species which grow wild in Andalusia or are cultivated in a marginal manner: Lupinus angustifolius, L. cosentinii, L. gredensis, L. hispanicus, L. luteus and L. micranthus.
Vioque and other colleagues from the Fat Institute and the University of Seville have analyzed the composition of the amino acids which make up the seed proteins, as well as the "protein digestibility" (percentage of protein digested) and other nutritional parameters. The results of the work will be published at the end of the year in the Food Chemistry magazine, although they can already be viewed online.
The data reflect that the species studied display a high protein content fluctuating between 23.8% and 33.6%, very similar to that observed in other legumes. Moreover, the protein digestibility of these lupins is high (between 82% and 89%) and is also similar to that of other legumes and cereals. The study concludes that L. luteus, L. hispanicus and L. cosentinii contain the proteins with the best nutritional properties and that the amino acid composition of the latter species is the most balanced.
Legumes as a source of proteins
Legumes, together with cereals, represent the main source of vegetable proteins in the human diet. The beans and fruits of these plants, as well as having a high content of quality protein, are rich in fibre and carbohydrates and contain other components like polyphenols. For this reason, several studies have confirmed that the consumption of these legumes is beneficial for our health and may help to prevent illnesses such as diabetes and colon cancer.
Despite the above, the consumption of legumes has decreased in recent years, especially that of autochthonous and locally-distributed species. The legumes of the Lupinus species are no exception to the problem.
"For the conservation and expansion of these local crops, we need to continue studying their characteristics as a source of food", indicated Vioque, who emphasizes that research like this "confirms the interest in studying populations of wild species, cultivated or not, so that they can provide seeds with good nutritional properties".
Elena Pastor-Cavada, Rocío Juan, Julio E. Pastor, Manuel Alaiz y Javier Vioque. "Analytical nutritional characteristics of seed proteins in six wild Lupinus species from Southern Spain". Food Chemistry 117 (3): 466-469, 2009.
SINC | EurekAlert!
Funding of Collaborative Research Center developing nanomaterials for cancer immunotherapy extended
28.06.2017 | Johannes Gutenberg-Universität Mainz
Zeolite catalysts pave the road to decentral chemical processes Confined space increases reactivity
28.06.2017 | Technische Universität München
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)...
19.06.2017 | Event News
13.06.2017 | Event News
13.06.2017 | Event News
28.06.2017 | Physics and Astronomy
28.06.2017 | Physics and Astronomy
28.06.2017 | Health and Medicine