Black rice is anti-cancer super food

Black rice - revered in ancient China but overlooked in the West - could be the greatest 'superfoods', according to research done by scientists from Louisiana State University.

The cereal is low in sugar but packed with healthy fibre and plant compounds that combat heart disease and cancer, say experts.

Scientists from Louisiana State University analysed samples of bran from black rice grown in the southern US They found boosted levels of water-soluble anthocyanin antioxidants.

Anthocyanins provide the dark colours of many fruits and vegetables, such as blueberries and red peppers. They are what makes black rice 'black'.

"Just a spoonful of black rice bran contains more health promoting anthocyanin antioxidants than are found in a spoonful of blueberries, but with less sugar and more fiber and vitamin E antioxidants," researcher Dr. Zhimin Xu, associate professor of food science at Louisiana State University Agricultural Center in Baton Rouge, said in a written statement.


Research suggests that the dark plant antioxidants, which mop up harmful molecules, can help protect arteries and prevent the DNA damage that leads to cancer.

Food scientist Dr Zhimin Xu said: 'Just a spoonful of black rice bran contains more health promoting anthocyanin antioxidants than are found in a spoonful of blueberries, but with less sugar, and more fibre and vitamin E antioxidants.

"If berries are used to boost health, why not black rice and black rice bran? Especially, black rice bran would be a unique and economical material to increase consumption of health-promoting antioxidants."

Centuries ago black rice was known as 'Forbidden Rice' in ancient China because only nobles were allowed to eat it.

Today black rice is mainly used in Asia for food decoration, noodles, sushi and desserts.

But food manufacturers could potentially use black rice bran or bran extracts to make breakfast cereals, beverages, cakes, biscuits and other foods healthier, said Dr Xu.

When rice is processed, millers remove the outer layers of the grains to produce brown rice or more refined white rice - the kind most widely consumed in the West.

Brown rice is said to be more nutritious because it has higher levels of healthy vitamin E compounds and antioxidants.

But according to Dr Xu's team, varieties of rice that are black or purple in colour are healthier still.

They added that black rice could also be used to provide healthier, natural colourants. Studies linked some artificial colourants to cancer and behavioural problems in children.

The scientists presented their findings today at the 240th National Meeting of the American Chemical Society in Boston.

Victoria Taylor, senior dietician at the British Heart Foundation, said: 'In reality, it's unlikely there's a single food out there that will have a great impact on lowering your risk of heart disease. Healthy eating is about a balanced diet overall.

"It's great if you can eat more of some groups of healthy foods, like having five portions of fruit and veg a day, but there is still no conclusive evidence that 'super foods' alone make a real difference to your heart health."

Study Finds Sunny Side of Eggs

Despite decades of advice that the cholesterol in eggs is bad for you, researchers now report evidence that eggs might actually reduce high blood pressure.

The scientists found egg proteins that, in laboratory simulations of the human digestive process, seem to be as good as common prescription medications for lowering blood pressure.

However, it should be noted that funding for the research came from livestock and poultry industry groups. And the researchers emphasized that further study is needed to determine if the proteins actually work in humans.

Further Readings (Source)

Watermelon May Have Viagra-Effect

A cold slice of watermelon has long been a Fourth of July holiday staple. But according to recent studies, the juicy fruit may be better suited for Valentine’s Day.

That’s because scientists say watermelon has ingredients that deliver Viagra-like effects to the body’s blood vessels and may even increase libido.

“The more we study watermelons, the more we realize just how amazing a fruit it is in providing natural enhancers to the human body,” said Dr. Bhimu Patil, director of Texas A&M’s Fruit and Vegetable Improvement Center in College Station.

“We’ve always known that watermelon is good for you, but the list of its very important healthful benefits grows longer with each study.”

Beneficial ingredients in watermelon and other fruits and vegetables are known as phyto-nutrients, naturally occurring compounds that are bioactive, or able to react with the human body to trigger healthy reactions, Patil said.

In watermelons, these include lycopene, beta carotene and the rising star among its phyto-nutrients – citrulline – whose beneficial functions are now being unraveled. Among them is the ability to relax blood vessels, much like Viagra does.

Scientists know that when watermelon is consumed, citrulline is converted to arginine through certain enzymes. Arginine is an amino acid that works wonders on the heart and circulation system and maintains a good immune system, Patil said.

“The citrulline-arginine relationship helps heart health, the immune system and may prove to be very helpful for those who suffer from obesity and type 2 diabetes,” said Patil. “Arginine boosts nitric oxide, which relaxes blood vessels, the same basic effect that Viagra has, to treat erectile dysfunction and maybe even prevent it.”

While there are many psychological and physiological problems that can cause impotence, extra nitric oxide could help those who need increased blood flow, which would also help treat angina, high blood pressure and other cardiovascular problems.

“Watermelon may not be as organ specific as Viagra,” Patil said, “but it’s a great way to relax blood vessels without any drug side-effects.”

The benefits of watermelon don’t end there, he said. Arginine also helps the urea cycle by removing ammonia and other toxic compounds from our bodies.

Citrulline, the precursor to arginine, is found in higher concentrations in the rind of watermelons than the flesh. As the rind is not commonly eaten, two of Patil’s fellow scientists, drs. Steve King and Hae Jeen Bang, are working to breed new varieties with higher concentrations in the flesh.

In addition to the research by Texas A&M, watermelon’s phyto-nutrients are being studied by the U.S. Department of Agriculture’s Agricultural Research Service in Lane, Oklahoma.

As an added bonus, these studies have also shown that deep red varieties of watermelon have displaced the tomato as the lycopene king, Patil said. Almost 92 percent of watermelon is water, but the remaining 8 percent is loaded with lycopene, an anti-oxidant that protects the human heart, prostate and skin health.

“Lycopene, which is also found in red grapefruit, was historically thought to exist only in tomatoes,” he said. “But now we know that it’s found in higher concentrations in red watermelon varieties.”

Lycopene, however, is fat-soluble, meaning that it needs certain fats in the blood for better absorption by the body, Patil said.

“Previous tests have shown that lycopene is much better absorbed from tomatoes when mixed in a salad with oily vegetables like avocado or spinach,” Patil said. “That would also apply to the lycopene from watermelon, but I realize mixing watermelon with spinach or avocadoes is a very hard sell.”

No studies have been conducted to determine the timing of the consumption of oily vegetables to improve lycopene absorption, he said.

“One final bit of advice for those Fourth of July watermelons you buy,” Patil said. “They store much better uncut if you leave them at room temperature. Lycopene levels can be maintained even as it sits on your kitchen floor. But once you cut it, refrigerate. And enjoy.”