Not everyone can enjoy the fresh strawberries in summer. Some experience an allergic reaction with itching and swelling in mouth and throat. Biochemists at Lund University have identified a strawberry allergen among the thousands of proteins in a strawberry. Screening is now performed to find strawberries with no or little of the allergen protein. Sofar, a colourless, ’white’ strawberry variety has been found to be virtually free from the allergen.
The allergen was identified using blood sera from patients experiencing adverse reactions to strawberry. The protein then discovered turned out to be a not completely unknown one. "This protein resembles a previously known allergen in birch pollen," says Cecilia Emanuelsson at the Dept of Biochemistry. A primary allergy against birch pollen can in turn evoke secondary allergic reactions against berries, fruit and some vegetables. That does not necessarily mean that all birch pollen allergic individuals react against strawberries. But some do; and some face the risk of developing such secondary adverse reactions. Birch-pollen related food allergy is a well-known phenomenon and especially common in Northern Europe, but the actual number of persons affected today is difficult to estimate.
There are some observations among breeders that allergic individuals can eat a white strawberry variety without problems. When the research group in Lund investigated such a white strawberry they found that it contained very little of the strawberry allergen. In Sweden breeders have worked for some time with breeding to improve the quality of white strawberries to become as tasty as the red ones. Some plant shops occasionally provide plants of white strawberry. "The allergen is in some way or other related to the red colour but it is not clear exactly how, we need to investigate more proteins," says Rikard Alm.
Fast-tracking T cell therapies with immune-mimicking biomaterials
16.01.2018 | Wyss Institute for Biologically Inspired Engineering at Harvard
Dengue takes low and slow approach to replication
12.01.2018 | Duke University
What enables electrons to be transferred swiftly, for example during photosynthesis? An interdisciplinary team of researchers has worked out the details of how...
For the first time, scientists have precisely measured the effective electrical charge of a single molecule in solution. This fundamental insight of an SNSF Professor could also pave the way for future medical diagnostics.
Electrical charge is one of the key properties that allows molecules to interact. Life itself depends on this phenomenon: many biological processes involve...
At the JEC World Composite Show in Paris in March 2018, the Fraunhofer Institute for Laser Technology ILT will be focusing on the latest trends and innovations in laser machining of composites. Among other things, researchers at the booth shared with the Aachen Center for Integrative Lightweight Production (AZL) will demonstrate how lasers can be used for joining, structuring, cutting and drilling composite materials.
No other industry has attracted as much public attention to composite materials as the automotive industry, which along with the aerospace industry is a driver...
Scientists at Tokyo Institute of Technology (Tokyo Tech) and Tohoku University have developed high-quality GFO epitaxial films and systematically investigated their ferroelectric and ferromagnetic properties. They also demonstrated the room-temperature magnetocapacitance effects of these GFO thin films.
Multiferroic materials show magnetically driven ferroelectricity. They are attracting increasing attention because of their fascinating properties such as...
The oceans are the largest global heat reservoir. As a result of man-made global warming, the temperature in the global climate system increases; around 90% of...
08.01.2018 | Event News
11.12.2017 | Event News
08.12.2017 | Event News
16.01.2018 | Materials Sciences
16.01.2018 | Materials Sciences
16.01.2018 | Power and Electrical Engineering