Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Stay healthy with polyphenols!

23.03.2007
These molecules with antioxidant properties are found in the most common consumer products. They protect against numerous diseases.

Polyphenols help control free radical formation in humans and slow cell ageing. First and foremost, they are found in fruit and vegetables, but also in processed goods such as chocolate, tea or wine. Humans consume around a gramme of polyphenols a day, which is more than ten times the figure for vitamin C.

Strawberries, lychees and grapes are the fruits with the highest polyphenol content, but vegetables are not far behind, particularly artichokes, parsley and brussels sprouts. Moreover, total consumption also plays a role. As Pierre Brat* points out: "If we look at total polyphenol content in apples, they rank fifth compared to other fruits, but the extent of their consumption places them first!". Likewise, in terms of vegetables, potatoes rank just 19th, but their massive consumption means that they account for almost 60% of the polyphenols obtained from vegetables.

This prompted CIRAD and its partners to create a database, to set product composition against consumption. In all, the total polyphenol content of 162 vegetable and 71 fruit samples, along with 85 tea samples, was analysed. The results were used to compile a composition and consumption table, with values for 28 fruits and 24 vegetables (Journal of Nutrition, 2006, vol. 136, p. 2368-2373, co-author Pierre Brat).

The operation is continuing in the form of the Phénobase project, led by the CTCPA (Centre Technique de la Conservation des Produits Agricoles) in Avignon, in which CIRAD is also involved. The aim is to expand the database, this time looking at commonly consumed "processed" food products.

* Researcher with the CIRAD Qualisud Research Unit

Helen Burford | alfa
Further information:
http://www.cirad.fr/en/presse/communique.php?id=259

More articles from Agricultural and Forestry Science:

nachricht Plasma-zapping process could yield trans fat-free soybean oil product
02.12.2016 | Purdue University

nachricht New findings about the deformed wing virus, a major factor in honey bee colony mortality
11.11.2016 | Veterinärmedizinische Universität Wien

All articles from Agricultural and Forestry Science >>>

The most recent press releases about innovation >>>

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

Im Focus: How gut bacteria can make us ill

HZI researchers decipher infection mechanisms of Yersinia and immune responses of the host

Yersiniae cause severe intestinal infections. Studies using Yersinia pseudotuberculosis as a model organism aim to elucidate the infection mechanisms of these...

Im Focus: Interfacial Superconductivity: Magnetic and superconducting order revealed simultaneously

Researchers from the University of Hamburg in Germany, in collaboration with colleagues from the University of Aarhus in Denmark, have synthesized a new superconducting material by growing a few layers of an antiferromagnetic transition-metal chalcogenide on a bismuth-based topological insulator, both being non-superconducting materials.

While superconductivity and magnetism are generally believed to be mutually exclusive, surprisingly, in this new material, superconducting correlations...

Im Focus: Studying fundamental particles in materials

Laser-driving of semimetals allows creating novel quasiparticle states within condensed matter systems and switching between different states on ultrafast time scales

Studying properties of fundamental particles in condensed matter systems is a promising approach to quantum field theory. Quasiparticles offer the opportunity...

Im Focus: Designing Architecture with Solar Building Envelopes

Among the general public, solar thermal energy is currently associated with dark blue, rectangular collectors on building roofs. Technologies are needed for aesthetically high quality architecture which offer the architect more room for manoeuvre when it comes to low- and plus-energy buildings. With the “ArKol” project, researchers at Fraunhofer ISE together with partners are currently developing two façade collectors for solar thermal energy generation, which permit a high degree of design flexibility: a strip collector for opaque façade sections and a solar thermal blind for transparent sections. The current state of the two developments will be presented at the BAU 2017 trade fair.

As part of the “ArKol – development of architecturally highly integrated façade collectors with heat pipes” project, Fraunhofer ISE together with its partners...

Im Focus: How to inflate a hardened concrete shell with a weight of 80 t

At TU Wien, an alternative for resource intensive formwork for the construction of concrete domes was developed. It is now used in a test dome for the Austrian Federal Railways Infrastructure (ÖBB Infrastruktur).

Concrete shells are efficient structures, but not very resource efficient. The formwork for the construction of concrete domes alone requires a high amount of...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

12V, 48V, high-voltage – trends in E/E automotive architecture

10.01.2017 | Event News

2nd Conference on Non-Textual Information on 10 and 11 May 2017 in Hannover

09.01.2017 | Event News

Nothing will happen without batteries making it happen!

05.01.2017 | Event News

 
Latest News

A big nano boost for solar cells

18.01.2017 | Power and Electrical Engineering

Glass's off-kilter harmonies

18.01.2017 | Materials Sciences

Toward a 'smart' patch that automatically delivers insulin when needed

18.01.2017 | Life Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>