Subcribe Here!

Enter your email address. It;s free!

Delivered by FeedBurner

Orange turns purple: Australian scientists solve fruit mystery

Posted by On 11:56 PM

Orange turns purple: Australian scientists solve fruit mystery

Australia Australia Orange turns purple: Australian scientists solve fruit mystery

Three orange slices that turned purpleImage copyright Neti Moffitt
Image caption The fruit changed colour within hours of being cut up with a knife

What could cause a freshly sliced orange to suddenl y turn purple?

Australian health authorities say they have solved a mystery that prompted much speculation earlier this month.

It began when a Brisbane woman, Neti Moffitt, asked for an investigation into why an orange - partially eaten by her son - had later changed colour.

Scientists have now revealed it was due to a natural reaction between the fruit and a sharpened knife. The orange did not pose a health risk, they added.

Stewart Carswell, Queensland Health's chief chemist, said "numerous tests" were conducted to determine the cause of the colour change.

The results revealed that anthocyanins - a naturally occurring antioxidant in oranges - had reacted with iron particles from the newly sharpened blade, he said.

Image copyright Neti Moffitt
Image caption There is no risk to health, Queensland officials say

Ms Moffitt told the BBC that it was "brilliant" have the mystery solved.

The orange turned purple sometime after Ms Moffitt's two-year-old son had eaten a few slices.

"It looks like someone's dipped it on an ink pad, which I guarantee you we haven't," she told the Australian Broadcasting Corporation earlier this month.

"My first thought was I hope it has had no ill effect on my child. But he's fine, absolutely not a drama."

You might also be interested in:

  • Why would someone hide a needle in fruit?
  • Fruit and veg: For a longer life 'eat 10-a-day'
  • Part of Australian beach vanishes into sea

On Wednesday, Mr Carswell described the investigation as unusual.

"We see samples that ra nge from blood, urine, water, soil, fish and foodstuffs. So to have an orange come through was really different for our team," he said in a statement.

Image copyright Neti Moffitt
Image caption The knife and sharpener were returned after forensic testing

The Queensland government said it had assured the family that the orange was not a risk to health.

Top Stories

US warns Iran of 'hell to pay' if crossed

The two sides taunt each other at the UN, with Iran accusing the US of "bullying and imposition".

26 September 2018 Cosby sentenced to prison for sex assault 26 September 2 018 Entire Mexican city's police force probed 26 September 2018

Features

Video

Why 27 hikers helped this woman up a mountain

The trend for renting rather than buying clothes

Has Macron lost his charm?

Video

Trump gets unexpected laugh at UN

The school turning boys into feminists

Why Sweden and China have fallen out so badly

BBC Culture: Taiwan's eerie sonic weapon

French jets get caught in Indian political storm

The policewoman who stopped WhatsApp killings

Elsewhere on the BBC

Football phrases

15 sayings from around the world

Full article Football phrases Why you can trust BBC News

BBC News Services

  • On your mobile
  • On your connected tv
  • Get news alerts
  • Contact BBC News
Source: Google Australia | Netizen 24 Australia

Next
« Prev Post
Previous
Next Post »