Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Nordic berries inhibit growth of harmful intestinal bacteria

03.11.2004


A research project carried out by VTT Biotechnology and the University of Helsinki has found that cloudberries and raspberries contain a phenol, ellagic tannin, that inhibits the growth of intestinal bacteria.



The study concerned commercially grown Finnish berries, particularly cloudberry and raspberry. One of the substances inhibiting growth of harmful intestinal bacteria and pathogens is a complex phenolic polymer, ellagic tannin, found in the berries. Other berries and fruit contain only small quantities of ellagic tannin. "We were especially surprised and excited by the observation that probiotics that are beneficial for digestion are not sensitive to the berries, but harmful bacteria are. Consequently, the berries may inhibit the activity of harmful bacteria. The antimicrobial qualities of the berries are also well preserved with e.g. freezing," says the project director, Riitta Puupponen-Pimiä of VTT Biotechnology.

Thus, possible examples of derivatives from the berries might be berry powder to help traveller’s tummy, or berry extract as an added preservative for marinades. During the first three years, the research project collaborated with the food industry. Pharmaceutical and health food industries have joined later. Around ten businesses in all have participated in the project.


Effect of berries on bacteria

The project studied about ten bacteria that cause infections of the alimentary canal and food poisoning, and how they reacted to the phenols in berries. Salmonella and listeria were some of the bacteria under study. The phenols present in the berries were found to inhibit growth of salmonella, staphylococcus and camphylobacter. The phenols in the berries had no significant effect on the functioning of listeria.

"Understanding the interaction of phenolic compounds and bacteria of the alimentary canal is important, for example for developing functional foods. As antimicrobial compounds, phenols may have a previously unforeseen effect on intestinal microbes," says Ms Puupponen-Pimiä.

Widely applicable

The study has aroused a great deal of interest, as it has a wide range of possible applications. The results may be utilised e.g. in developing functional foods, new types of safe food packaging, and in pharmaceutical applications.

The project is currently focusing on developing a method of isolating the phenolic compounds, to enable them to be used in industrial applications. Another objective is development of treatments to increase the concentration of beneficial substances contained in the berries.

The project is part of the National Technology Agency of Finland (Tekes) technology programme Innovation in Foods.

Mira Banerjee | alfa
Further information:
http://www.tekes.fi

More articles from Life Sciences:

nachricht A novel synthetic antibody enables conditional “protein knockdown” in vertebrates
20.08.2018 | Technische Universität Dresden

nachricht Climate Impact Research in Hannover: Small Plants against Large Waves
17.08.2018 | Leibniz Universität Hannover

All articles from Life Sciences >>>

The most recent press releases about innovation >>>

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

Im Focus: It’s All in the Mix: Jülich Researchers are Developing Fast-Charging Solid-State Batteries

There are currently great hopes for solid-state batteries. They contain no liquid parts that could leak or catch fire. For this reason, they do not require cooling and are considered to be much safer, more reliable, and longer lasting than traditional lithium-ion batteries. Jülich scientists have now introduced a new concept that allows currents up to ten times greater during charging and discharging than previously described in the literature. The improvement was achieved by a “clever” choice of materials with a focus on consistently good compatibility. All components were made from phosphate compounds, which are well matched both chemically and mechanically.

The low current is considered one of the biggest hurdles in the development of solid-state batteries. It is the reason why the batteries take a relatively long...

Im Focus: Color effects from transparent 3D-printed nanostructures

New design tool automatically creates nanostructure 3D-print templates for user-given colors
Scientists present work at prestigious SIGGRAPH conference

Most of the objects we see are colored by pigments, but using pigments has disadvantages: such colors can fade, industrial pigments are often toxic, and...

Im Focus: Unraveling the nature of 'whistlers' from space in the lab

A new study sheds light on how ultralow frequency radio waves and plasmas interact

Scientists at the University of California, Los Angeles present new research on a curious cosmic phenomenon known as "whistlers" -- very low frequency packets...

Im Focus: New interactive machine learning tool makes car designs more aerodynamic

Scientists develop first tool to use machine learning methods to compute flow around interactively designable 3D objects. Tool will be presented at this year’s prestigious SIGGRAPH conference.

When engineers or designers want to test the aerodynamic properties of the newly designed shape of a car, airplane, or other object, they would normally model...

Im Focus: Robots as 'pump attendants': TU Graz develops robot-controlled rapid charging system for e-vehicles

Researchers from TU Graz and their industry partners have unveiled a world first: the prototype of a robot-controlled, high-speed combined charging system (CCS) for electric vehicles that enables series charging of cars in various parking positions.

Global demand for electric vehicles is forecast to rise sharply: by 2025, the number of new vehicle registrations is expected to reach 25 million per year....

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

LaserForum 2018 deals with 3D production of components

17.08.2018 | Event News

Within reach of the Universe

08.08.2018 | Event News

A journey through the history of microscopy – new exhibition opens at the MDC

27.07.2018 | Event News

 
Latest News

Quantum bugs, meet your new swatter

20.08.2018 | Information Technology

A novel synthetic antibody enables conditional “protein knockdown” in vertebrates

20.08.2018 | Life Sciences

Metamolds: Molding a mold

20.08.2018 | Information Technology

VideoLinks
Science & Research
Overview of more VideoLinks >>>