Hi Readers,
Have a look at this and tell me what you think, I am going to give an opinion at the end of this release also.
Scientists create new super vegetables
Posted Mon Aug 17, 2009 12:50pm AEST
The broccoli will be wrapped in plastic in shops to retain the anti-oxidants. (supplied)
* Map: Melbourne 3000
Victorian scientists have developed a new range of vegetables that have 40 per cent more anti-oxidants.
Anti-oxidants have been proven to reduce the risk of a range of diseases such as heart disease and some types of cancer.
The so-called "booster broccoli" is the first in a group of vegetables being developed by scientists at Victoria's Department of Primary Industries (DPI).
DPI leading scientist Dr Rod Jones says the new broccoli is not the result of genetic engineering.
"All we've done is gone back and minded nature's natural diversity," he said.
He said they formed partnerships with large companies and tested all of their varieties of broccoli and selected the one out of 400 tested with the highest anti-oxidant content.
Now they have started to breed that variety.
"It's a premium branded product so the returns to growers should be higher," he said.
"It's also about improving the health of our population in general by getting people to eat vegetables that we know are very good for them."
So far more than $20-million has been invested in the project.
There are another 15 products in commercial testing including tomatoes, capsicum and lettuce.
"So once those lines come through, plus all the other ones we're looking at, cauliflower, onion, carrot, I don't think it will take too long for the investment to be recouped," he said.
Dr Jones says the booster broccoli actually tastes good too.
"It tastes sweeter than most other broccoli varieties because it's high in sugar."
He said Australian conditions are perfect for growing the new varieties because when the plants are stressed by a lack of water, the anti-oxidant level goes up.
He is confident they can eventually create a range of vegetables that have an even higher anti-oxidant content.
Tags: rural, agricultural-crops, vegetables, australia, vic, melbourne-3000
My comments..for what they are worth!!
"Until we know exactly what these antioxidants can upregulate in terms of cancer protecting chemicals we know absolutely nothing about what we can expect, we may even find that the 40% increase in antioxidants come at the expense of losing something potentially more valuable, they are still struggling to explain the mechanism by which this alleged (not proven yet) cancer protection works. The studies so far are epidemiological (population studies)."
Crambene, a bioactive nitrile derived from glucosinolate hydrolysis, acts via the antioxidant response element to upregulate quinone reductase alone or synergistically with indole-3-carbinol.
Nho CW, Jeffery E.
Division of Nutritional Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA.
Epidemiological studies show that cruciferous vegetables play a role in dietary protection against cancers. The protective effects of crucifers are thought to be associated with secondary metabolites termed glucosinolates, the hydrolysis products of which upregulate hepatic detoxification enzymes. Crambene, a nitrile product of the glucosinolate progoitrin, increases hepatic quinone reductase (QR) when included in the diet of animals. Here we evaluate the mechanism of upregulation of detoxification enzymes by crambene. The regulatory region of the QR gene contains two response elements, the antioxidant response element (ARE) and the xenobiotic response element (XRE), that respond to glucosinolate hydrolysis products. We compared upregulation of QR mRNA expression by crambene in wild-type and Ah receptor-deficient mouse hepatoma cell lines. Both cell lines showed a similar increase in QR mRNA, suggesting that the Ah receptor-dependent XRE pathway is not required for crambene to act. Transient transfection of HepG2 cells with reporter constructs containing portions of the 5' regulatory region of the rat QR gene confirmed this, revealing that crambene significantly activated ARE, but not XRE, in a dose-dependent manner. Furthermore, both indole-3-carbinol (I3C) and I3C acid condensates (I3C-A) activated the ARE for QR gene expression whereas only I3C-A activated the XRE at the concentrations studied. In addition, co-treatment with crambene and I3C-A caused synergistic increases in QR transcriptional activity and mRNA levels in HepG2 cells. Based on these findings, we propose that synergistic upregulation of QR is due to co-activation of the ARE and the XRE by crambene and I3C-A.
PMID: 15207647 [PubMed - indexed for MEDLINE]
Related articles
* The synergistic upregulation of phase II detoxification enzymes by glucosinolate breakdown products in cruciferous vegetables.
[Am J Pathol. 2007]
Crambene, a bioactive nitrile derived from glucosinolate hydrolysis, acts via the antioxid...Crambene, a bioactive nitrile derived from glucosinolate hydrolysis, acts via the antioxidant response element to upregulate quinone reductase alone or synergistically with indole-3-carbinol.
Me again.
So far cruciferous vegetables look like they are the real deal but we still need to see some proof of cancer prevention that is stronger than association. I am a cynic as usual and I can't help wondering whether this is really aimed at health primarily, or is it a new selling line with the main emphasis on the bottom line of the balance sheet.
Cheers