Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Innovative drying technology future of food preservation

20.12.2005


According to a well-known proverb “one apple a day keeps the doctor away“, suggesting that the healthy components which occur in fruits and vegetables can prevent diet-related diseases. Unfortunately, fresh fruits and vegetables are not always available and frozen food is not really handy either. What is less complicated, however, is dried food. During the past two years scientists from the Friedrich-Schiller-Universität Jena and the Technische Universität Dresden/Germany as well as the Zittauer Fruchtveredlungs GmbH (ZIFRU) have been successfully testing how dried food can be processed so gently as to preserve as many vitamins and secondary plant compounds as possible.



Examining various processing conditions, the researchers noticed that the food not only kept its valuable substances after drying but it also showed other attractive characteristics such as a crispy texture, stable colour and puffed structure. Moreover, the scientists found that the method which was tested for strawberries can be transferred to other kinds of berries, apples and vegetables, too. Therefore, the vacuum microwave puffing technology could soon stand as a new synonym of food preservation.

The Jena university carried out a complementary study, examining the impact of both frozen strawberries and strawberries dried using the innovative vacuum microwave puffing technolgy on the human body. In both cases the anti-oxidative capacity in the blood increased and the immune system was strengthened, which can be explained by the amount of vitamins contained in the strawberries. After two years of research an impressing comparison was finally drawn: 2 ounces dried strawberries deliver as many nutritionally valuable substances as 12 ounces frozen srawberries. In other words, two handfuls of dried strawberries are the same as two packages of frozen ones.


The information regarding the healthy aspects and the scientific basis are now to be passed on to the consumer as well as to the food industry in order to enhance the medium-sized company’s position. However, fruit snacks made at ZIFRU are already for sale in France and a German natural product company has expressed its interest, too. Given this, all of the research project’s aims, which the German Federation of Industrial Research Associations “Otto von Guericke“ funded with 315.000 euros, were achieved.

Prof Harald Rohm | alfa
Further information:
http://www.tu-dresden.de/mw/ilb

More articles from Health and Medicine:

nachricht Cystic fibrosis alters the structure of mucus in airways
28.06.2017 | University of Iowa Health Care

nachricht Mice provide insight into genetics of autism spectrum disorders
28.06.2017 | University of California - Davis

All articles from Health and Medicine >>>

The most recent press releases about innovation >>>

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

Im Focus: Can we see monkeys from space? Emerging technologies to map biodiversity

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...

Im Focus: Climate satellite: Tracking methane with robust laser technology

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...

Im Focus: How protons move through a fuel cell

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...

Im Focus: A unique data centre for cosmological simulations

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...

Im Focus: Scientists develop molecular thermometer for contactless measurement using infrared light

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)...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Plants are networkers

19.06.2017 | Event News

Digital Survival Training for Executives

13.06.2017 | Event News

Global Learning Council Summit 2017

13.06.2017 | Event News

 
Latest News

Supersensitive through quantum entanglement

28.06.2017 | Physics and Astronomy

X-ray photoelectron spectroscopy under real ambient pressure conditions

28.06.2017 | Physics and Astronomy

Mice provide insight into genetics of autism spectrum disorders

28.06.2017 | Health and Medicine

VideoLinks
B2B-VideoLinks
More VideoLinks >>>