Whole black carrots reveal the key to gut health, reduced cancer risk

October 15, 2012
Whole black carrots reveal the key to gut health

Black carrots have revealed how fruit and vegetables help maintain gut health and reduce the risk of developing cancer.

The antioxidant compounds they contain combine with fibre to play an important role in protecting the colon from cancer, Dr Anneline Padayachee from the University of Queensland has  discovered.

The compounds, known as , are released from the plant cell during chewing. However, Anneline found that the majority of polyphenols are bound to fibre during this process. She found they were not free for absorption until they reached the colon in the final stages of digestion.

"Black —which are actually deep purple—are packed with polyphenols similar to those which give and their vivid colour. Anneline's work showed that these compounds became bound to the fibre during chewing and remained bound throughout digestion in the stomach and .We discovered that fibre not only works as a 'bowel scourer', but is also able to safely traffic polyphenols to the colon, where they are involved in gut health protective mechanisms," Anneline said.

Bacteria in the gut finally break down the fibre-bound polyphenols before the fibre itself is excreted. Products resulting from digested polyphenols then protect the colon from cancer.

Whole black carrots reveal the key to gut health

"So, to gain the benefits of polyphenols, you need to consume everything – the whole vegetable or fruit, including the fibrous pulp if you're juicing it. Not only will you have a clean gut, but a healthy gut full of protective polyphenols."

Anneline hopes her work might also help uncover medicinal uses for plant fibre in targeted treatments of dietary conditions.

She worked on this research project with the ARC Centre of Excellence in , the Centre for Nutrition and Food Sciences at the University of Queensland and CSIRO.

Anneline Padayachee is one of 12 early career scientists unveiling their research to the public for the first time thanks to Fresh Science, a national program sponsored by the Australian Government.

An example of Anneline's published work is online here: www.sciencedirect.com/science/ … ii/S0308814612002701

Explore further: Balanced diet required in prevention of cancer

Related Stories

Balanced diet required in prevention of cancer

September 6, 2012
(Medical Xpress)—Balancing your diet with protective foods rich in fibre and vitamin C can help prevent the formation of cancer causing compounds in the gut, the British Science Festival will hear today.

Recommended for you

Breathing dirty air may harm kidneys, study finds

September 21, 2017
Outdoor air pollution has long been linked to major health conditions such as heart disease, stroke, cancer, asthma and chronic obstructive pulmonary disease. A new study now adds kidney disease to the list, according to ...

Excess dietary manganese promotes staph heart infection

September 21, 2017
Too much dietary manganese—an essential trace mineral found in leafy green vegetables, fruits and nuts—promotes infection of the heart by the bacterium Staphylococcus aureus ("staph").

Being active saves lives whether a gym workout, walking to work or washing the floor

September 21, 2017
Physical activity of any kind can prevent heart disease and death, says a large international study involving more than 130,000 people from 17 countries published this week in The Lancet.

Frequent blood donations safe for some, but not all

September 21, 2017
(HealthDay)—Some people may safely donate blood as often as every eight weeks—but that may not be a healthy choice for all, a new study suggests.

Higher manganese levels in children correlate with lower IQ scores, study finds

September 21, 2017
A study led by environmental health researchers at the University of Cincinnati (UC) College of Medicine finds that children in East Liverpool, Ohio with higher levels of Manganese (Mn) had lower IQ scores. The research appears ...

One e-cigarette with nicotine leads to adrenaline changes in nonsmokers' hearts

September 20, 2017
A new UCLA study found that healthy nonsmokers experienced increased adrenaline levels in their heart after one electronic cigarette (e-cigarette) with nicotine but there were no increased adrenaline levels when the study ...

0 comments

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.