Navigation Links
Fried purple tomatoes

Scientists have expressed genes from snapdragon in tomatoes to grow purple tomatoes high in health-protecting anthocyanins.

Anthocyanins are naturally occurring pigments found at particularly high levels in berries such as blackberry, cranberry and chokeberry. Scientists are investigating ways to increase the levels of health-promoting compounds in more commonly eaten fruits and vegetables.

"Most people do not eat 5 portions of fruits and vegetables a day, but they can get more benefit from those they do eat if common fruit and veg can be developed that are higher in bioactive compounds," says Prof Cathie Martin from the John Innes Centre.

Anthocyanins offer protection against certain cancers, cardiovascular disease and age-related degenerative diseases. There is evidence that anthocyanins also have anti-inflammatory activity, promote visual acuity and hinder obesity and diabetes.

Tomatoes already contain high levels of the antioxidant lycopene. Highly processed tomatoes are the best source, or tomatoes cooked in a little oil, which helps to release the lycopene from cells. Flavonoids meanwhile are soluble in water, and foods containing both water soluble and fat-dissolved antioxidants are considered to offer the best protection against disease.

In this study the scientists expressed two genes from snapdragon that induce the production of anthocyanins in snapdragon flowers. The genes were turned on in tomato fruit. Anthocyanins accumulated in tomatoes at higher levels than anything previously reported for metabolic engineering in both the peel and flesh of the fruit. The fruit are an intense purple colour.

The scientists tested whether these elevated levels actually had an effect on health. In a pilot test, the lifespan of cancer-susceptible mice was significantly extended when their diet was supplemented with the purple tomatoes compared to supplementation with normal red tomatoes.

"This is one of the first examples of metabolic engineering that offers the potential to promote health through diet by reducing the impact of chronic disease," says Professor Cathie Martin.

"And certainly the first example of a GMO with a trait that really offers a potential benefit for all consumers. The next step will be to take the preclinical data forward to human studies with volunteers to see if we can promote health through dietary preventive medicine strategies."


Contact: Zoe Dunford
Norwich BioScience Institutes

Related biology news :

1. Monell scientist Mark Friedman awarded Guggenheim Fellowship to study diet and obesity
2. Purple extremist thrives under inhospitable conditions
3. Certain form of tomatoes could be key to prostate cancer prevention
4. Can tomatoes carry the cure for Alzheimers?
Post Your Comments:
Related Image:
Fried purple tomatoes
(Date:11/19/2015)... Nov. 19, 2015  Although some 350 companies are ... by a few companies, according to Kalorama Information. These include ... of the market share of the 6.1 billion-dollar molecular ... World Market for Molecular Diagnostic s .    ... is still controlled by one company and only a ...
(Date:11/18/2015)... 18, 2015 --> ... new market report titled  Gesture Recognition Market - Global ... - 2021. According to the report, the global gesture recognition market was ... to reach US$29.1 bn by 2021, at a CAGR ... North America dominated the global gesture recognition ...
(Date:11/17/2015)... Paris , qui s,est tenu ... Paris , qui s,est tenu du 17 au ... l,innovation biométrique, a inventé le premier scanner couplé, qui ... même surface de balayage. Jusqu,ici, deux scanners étaient nécessaires, ... digitales. Désormais, un seul scanner est en mesure de ...
Breaking Biology News(10 mins):
(Date:11/25/2015)... ... November 25, 2015 , ... Jessica ... on AngelList early in their initial angel funding process. Now, they are paying ... looking to make early stage investments in the microbiome space. In this, ...
(Date:11/24/2015)... , Nov. 24, 2015 Cepheid (NASDAQ: ... speaking at the following conference, and invited investors to ... NY      Tuesday, December 1, 2015 at 11.00 ... NY      Tuesday, December 1, 2015 at 11.00 ... Conference, New York, NY      Tuesday, ...
(Date:11/24/2015)... , ... November 24, 2015 , ... ... healthy metabolism. But unless it is bound to proteins, copper is also toxic ... (NIH), researchers at Worcester Polytechnic Institute (WPI) will conduct a systematic study of ...
(Date:11/24/2015)... -- Clintrax Global, Inc., a worldwide provider of clinical research services headquartered ... the company has set a new quarterly earnings record in Q3 ... posted for Q3 of 2014 to Q3 of 2015.   ... , with the establishment of an Asia-Pacific ... United Kingdom and Mexico , with ...
Breaking Biology Technology: