SUBSCRIBE

Breaking News on Supplements, Health & Nutrition - Europe US edition | APAC edition

News > Research

Read more breaking news

 

 

Tomato juice shows sports nutrition potential

By Stephen Daniells , 07-May-2012
Last updated on 07-May-2012 at 15:23 GMT2012-05-07T15:23:43Z

Tomato juice shows sports nutrition potential

A daily glass of antioxidant-rich tomato juice may reduce markers of oxidative stress and damage after exhaustive exercise, suggests a new study.

Five weeks of drinking 150 ml per day of tomato juice was associated with a reduction in levels of 8-dihydro-2’-deoxyguanosine (8-oxodG), a marker of oxidative DNA damage, in 15 untrained healthy subjects.

Results published in the Nutrition Journal indicated that exercise increased 8-oxodG by between 42 and 84% during the control phase of the study, but tomato juice prevented any such increases.

“It might be hypothesized that long term intake of tomato juice may reduce oxidative stress levels in patients with enhanced level of oxidative stress, for example, patients with diabetes, cardiovascular diseases or inflammation,” reported scientists from Stockholm University in Sweden.

Oxygen-breathing organisms naturally produce reactive oxygen species (ROS), which play an important role in a range of functions, including cell signaling. However, over production of these ROS from smoking, pollution, sunlight, high intensity exercise, or simply aging, may overwhelm the body’s antioxidant defenses and lead to oxidative stress.

Study details

The Stockholm-based researchers recruited 15 untrained healthy subjects to participate in their study. Participants were asked to perform a 20 min physical exercise at 80% of maximum pulse using an ergometer, and had their blood taken before and 60 minutes after the exercise.

The subjects then consumed 150 ml of tomato juice providing 15 mg of lycopene every day for five weeks. They re-performed the exercise. This was followed by a five week ‘washout’ period and then five more weeks of tomato juice consumption.

Results showed the initial bout of exercise increased 8-oxodG levels by 42%, while no such increases were observed after the first five weeks of tomato juice consumption.

After the five week washout period, exercise increased 8-oxodG levels by an average of 84%, said the Stockholm-based researchers. Five more weeks of tomato juice consumption again prevented any such increases in 8-oxodG levels.

Bioactives

“It is important to mention that beside lycopene tomatoes also contain vitamin C, tocopherols and polyphenols,” said the researchers. “It has been shown that among all antioxidants (in particular carotenoids) present in tomato juice, lycopene is the most abundant and stable during industrial food processing.

“Vitamin C and tocopherols in fresh tomato are destroyed by heating during food processing. Not much is known about the polyphenols in tomato juice.

“Therefore, we believe that the antioxidant activity of tomato juice is primarily due to its content of lycopene.”

Source: Nutrition Journal
2012, 11:29, doi:10.1186/1475-2891-11-29
“Tomato juice intake suppressed serum concentration of 8-oxodG after extensive physical activity”
Author: M. Harms-Ringdahl, D. Jenssen, S. Haghdoost

Related products

Live Supplier Webinars

Polyphenols tipped to become the way to innovate in Sports Nutrition
Fytexia
Alpha & Omega in Sports Nutrition – Using Omega 3’s and A-GPC to improve performance and recovery.
KD Pharma
Orally bioavailable standardized botanical derivatives in sport nutrition: special focus on recovery in post-intense physical activities
Indena
Collagen in motion: move freely and keep your injuries in check
Leading manufacturer of gelatine and collagen peptides
Life’s too short for slow proteins. Whey proteins hydrolysates: Fast delivery for enhanced performance
Arla Foods Ingredients
What it Takes to Compete and Win in Today’s Sports Nutrition Market
Capsugel
Sports Nutrition Snapshot: Key regional drivers and delivery format innovations
William Reed Business Media
Gutsy performance: How can microbiome modulation help athletes and weekend warriors
William Reed Business Media
Pushing the boundaries: Where’s the line between ‘cutting edge nutrition’ and doping
William Reed Business Media

On demand Supplier Webinars

High-amylose maize starch may reduce the risk of type 2 diabetes: what does this qualified health claim mean?
Ingredion
Balancing Innovation and Risk in Sports Nutrition Ingredients
NSF-International
Explaining bio-hacking: is there a marketing opportunity for food companies?
William Reed Business Media
Personalized Nutrition – how an industry can take part in shaping the future of Nutrition
BASF Nutrition & Health
Find out Nutritional and ingredient lifecycle solutions and strategies!
Roquette
Is the time rIpe for I-nutrition?
William Reed Business Media
The Advantage of Outsourcing Fermentation-based Manufacturing Processes
Evonik Health Care
All supplier webinars