Recognising rotten apples
This Aussie-Dutch tech is weeding out rotten apples
Australian food grading company GP Graders has embarked on a technology partnership with Dutch company Ellips to revolutionise the ability to recognise rotten apples.
The joint venture with Ellips has developed a system that uses light spectrometer technology to help apple packers identify internal defects of the fruit in order to meet increasing supermarket demands.
“This cutting-edge technology will change the industry and strengthen the packers’ ability to provide defect-free apples to supermarkets,” GP Graders managing director Stuart Payne says.
The system’s light spectrometer technology shoots a beam of light through the centre of the apple to look at the core and takes 10 images sliced across each apple to detect internal browning and core rot wherever it is located in the fruit.
GP Graders says its ability to take 10 incremental images of an individual fruit is a standout feature, as previous technologies could only take one light image through the centre of the apple.
Ellips chief executive officer Erwin Baker oversaw the installation at GP Graders’ Melbourne headquarters and was left impressed by the initial tests.
“The results were remarkable,” Payne says.
GP Graders fitted the new technology to an operating apple line, testing 1500 apples.
Of the apples discarded due to internal browning and core rot, 100 per cent were found to show defects.
Of the apples that passed the test, only one showed signs of internal browning after a collation test.
GP Graders is a world-leading manufacturer of cherry sorting and packing machinery and also Australia’s leading supplier of produce grading machinery.
The company has been designing and manufacturing turn-key apple grading and packing lines since 1963, with hundreds of its packing lines now operating on sites throughout Australia and around the world.
Above: The external and internal appearance of the same bad apple