Strawberries Boost Red Blood Cells – Study

22 Jun 2011 --- A team of researchers from the Marche Polytechnic University (UNIVPM, in Italy) and the University of Granada (UGR, in Spain) have demonstrated this effect in vivo, in a study on human volunteers published in the journal Food Chemistry.

6/22/2011 --- A group of volunteers ate half a kilo of strawberries every day for two weeks to demonstrate that eating this fruit improves the antioxidant capacity of blood. The study, carried out by Italian and Spanish researchers, showed that strawberries boost red blood cells' response to oxidative stress, an imbalance that is associated with various diseases.

Scientists have previously tried to confirm the antioxidant capacity of strawberries using in vitro laboratory experiments. Now, a team of researchers from the Marche Polytechnic University (UNIVPM, in Italy) and the University of Granada (UGR, in Spain) have demonstrated this effect in vivo, in a study on human volunteers published in the journal Food Chemistry.

Each day, the scientists fed 12 healthy volunteers 500 grams of strawberries (of the 'Sveva' variety) over the course of the day. They took blood samples from them after four, eight, 12 and 16 days, and also a month later. The results show that regular consumption of this fruit can improve the antioxidant capacity of blood plasma and also the resistance of red blood cells to oxidative haemolysis (fragmentation).

"We have shown that some varieties of strawberries make erythrocytes more resistant to oxidative stress. This could be of great significance if you take into account that this phenomenon can lead to serious diseases", Maurizio Battino, lead author of the study and a researcher at the UNIVPM, tells SINC.

The team is now analysing the variations caused by eating smaller quantities of strawberries (average consumption tends to be a 150g or 200g bowl per day). "The important thing is that strawberries should form a part of people's healthy and balanced diet, as one of their five daily portions of fruit and vegetables", Battino points out.

The search for the most antioxidant variety

"Various strawberry varieties are also being analysed in the laboratory, since they each contain antioxidants in differing amounts and proportions", explains José Luis Quiles, the Spanish participant in the study and a researcher at the UGR.

The body has an extensive arsenal of very diverse antioxidant mechanisms, which act at different levels. These can be cellular tools that repair oxidised genetic material, or molecules that are either manufactured by the body itself or consumed through the diet, which neutralise free radicals. Strawberries contain a large amount of phenolic compounds, such as flavonoids, which have antioxidant properties.

These substances reduce oxidative stress, an imbalance that occurs in certain pathologies, (such as cardiovascular disease, cancer and diabetes) and physiological situations (birth, ageing, physical exercise), as well as in the battles between "reactive kinds of oxygen" - in particular free radicals - and the body's antioxidant defences.

When the level of oxidation exceeds these antioxidant defences, oxidative stress occurs. Aside from causing certain illnesses, this is also implicated in phenomena such as the speed at which we may age, for example.

•    Full bibliographic informationSara Tulipani, José M. Álvarez-Suarez, Franco Busco, Stefano Bompadre, José L. Quiles, Bruno Mezzetti , Maurizio Battino. "Strawberry consumption improves plasma antioxidant status and erythrocyte resistance to oxidative haemolysis in humans". Food Chemistry 128 (1): 180-186, September 2011 (available on line 9 March 2011). Doi:10.1016/j.foodchem.2011.03.025.

 

Related Articles

Health & Nutrition News

Applied Food Sciences Secure Patent for Producing Guayusa Extract

28 Mar 2017 --- Applied Food Sciences, Inc. (AFS) has announced it is now the exclusive owner of a process patent that covers the production of enriched natural guayusa, from a single source plant, containing antioxidants, amino acids and caffeine.

Health & Nutrition News

Medicinal Food Diet Effective Against Type 1 Diabetes, Finds Study

28 Mar 2017 --- By following a diet high in short-chain fatty acids, humans may be able to improve their immune system and protect against type 1 or juvenile diabetes. That’s according to Monash University’s Biomedicine Discovery Institute where researchers say their new findings illustrate the dawn of a new era in treating human disease with medicinal foods.

Health & Nutrition News

High Intensity Exercise Could Act as “Prescription” For Kids Metobolic Health

27 Mar 2017 --- Just 10 minutes a day of high-intensity physical activity may be the key to helping some children reduce their risk of developing heart problems and metabolic diseases such as diabetes, according to an international study led by a researcher at Wake Forest Baptist Medical Center. 

Health & Nutrition News

NutriScience Improves Purity of InnovaTea, Launches Vegetarian L-Tyrosine/L-Leucine Products

24 Mar 2017 --- NutriScience Innovations, a leading global supplier of nutritional ingredients and functional raw materials, has announced it has further improved the purity of its proprietary and trademarked InnovaTea, natural caffeine from tea. It has also launched new vegetable origin L-Tyrosine & L-Leucine.

More Articles
URL : http://www.nutritioninsight.com:80/news/Strawberries-boost-red-blood-cells-study.html