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Three technical students win award for inventing better way to test durian ripeness

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Three technical students win award for inventing better way to test durian ripeness

By The Nation

 

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Three technical school students in Prachuap Khiri Khan have invented a pen for checking the ripeness of durians with apparent 100 per cent accuracy.

 

The three students – Methee Khampuan, Phanthiwa Khamkaew and Somsong Chaeng-aksorn – spent three months to design and create the pen, which features a long needle with a tip that pierces the durian’s peel and then measures the resistance force of the inside meat.

 

If the pen turns green, it means the durian is ripe. If the pen turns yellow, the durian is semi-ripe, but if it turns red it is still raw.

 

The pen has won the best innovation award in the province for the 2017 academic year, said Jitwattana Boonlert, head of the factory mechanics department of Bang Saphan Vocational College where the students study.

 

Current testing for ripeness involves experts listening to the sound when they gently touch the peel with a tiny stick. To be more certain, the peel must be slightly cut open and buyers must press the meat to feel whether it is hard or soft.

 

Buyers and sellers have often engaged in after-sale disputes when purchased durians were found not be properly ripe, noted Jitwattana Boonlert.

 

Jitwattana said the pen could be used to accurately check the ripeness without having to first cut open the fruit’s peel.

 

Source: http://www.nationmultimedia.com/detail/breakingnews/30344781

 
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-- © Copyright The Nation 2018-05-07

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Who needs technology? My former missus, a Thai lady, always brought back perfectly ripe durian from the market. The secret was literally at her fingertips.

 

She would tap a likely-looking fruit while holding it close to her ear. The sound it made determined whether or not she would buy. As a bit of a durian addict myself, I can't recall her ever making a mistake.

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you could also use ultrasound and would not need to puncture the fruit

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Durain seller on a street stall with an Ultrasound machine....?  

I have noticed the madness of the Chinese in their desperation to buy at the food stalls in Jomtien, they are not bothered if its hard or soft inside -
Though I believe Thais prefer slightly firm durians when it comes to the squeeze test... But you can only do that after you have cut it open .. So I think these kids are onto a winner.

 

 

 

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