Laser can detect the ripeness of fruit

FARMERS could soon be checking the ripeness of their tomatoes, pumpkins and peppers – with laser technology.

A portable version of an instrument used in metal analysis, archaeology and art can also be used on fruit and veg plots, say scientists.

The Raman spectrometer is non-invasive enabling experts to observe pigments present in a painting or sculpture, for instance, without having to extract samples.

Now it’s been applied in culinary research, providing information on the best time to send produce to market.

Chemist Josu Trebolazabala, of the Basque Country University in Spain, said: “It’s about transferring this technology, which had a specific use, to the kitchen. Our idea was to come up with a tool that could help producers find out when their tomatoes have reached their optimum ripeness point. This is achieved by using this technique and, what is more, without destroying the fruit.”

“The aim is to enable producers to go to the vegetable plot with this equipment, place the Raman probe on the tomato, and find out whether it is at its optimum picking point or whether it needs to be left longer so it can ripen properly.”

The results provided by the portable instrument have been compared with those provided by a similar laboratory machine.

The monitoring of the composition of the fruit during its ripening phases has made it possible for Mr Trebolazabala’s team to observe the changes that take place. He said: “When the tomato is green, the main pigments are chlorophyl.”

Its presence falls as the fruit ripens. STREET performers are taking over Barrhead Water Works to stage a dance event in tribute to a 200-year-old Orcadian festival.

Physical theatre company Oceanallover have taking inspiration from Orkney’s Festival of the Horse and Boys Ploughing Match for their latest project, Sea Hames.

The contemporary dance piece will explore the mythology of the horse, the plough and the land through physical theatre, dance and costume. It is being staged at the unique venue in Renfrewshire on Saturday night as part of Dance International Glasgow and will also be shown on Friday night at Kingston Playing Fields in Neilston.

Dance International Glasgow, which is organised by Tramway, is a biennial arts festival which runs until May 21. Picture: Jamie Simpson