Seafood lovers know the fatty marbling is what makes tuna sashimi and sushi so tasty, so for the business, it is the fish’s stage of fattiness that is used to evaluate its high quality and pricing.
Often, a number of folks assess how fatty a tuna is by slicing the tail with a large saw-like knife, an operation that takes about 60 seconds per fish.
However now a machine referred to as Sonofai makes use of ultrasound waves to do the job in 12 seconds, operated by an individual with out prior data of find out how to carve fish.
Fujitsu, the Japanese firm behind the know-how, invited reporters this week for an illustration of Sonofai, a phrase blended from “sono” referring to “sound,” “f” for Fujitsu, and “ai,” or synthetic intelligence. The title refers to its parts but in addition stands for “son of AI.”
A conveyor belt transports an entire frozen tuna fish, a few meter (3 ft) in measurement, right into a machine that beams ultrasound waves. Sensors decide up the waves to attract a zigzagging diagram on a display screen to point the fish’s fattiness.
Fatty meat absorbs fewer sound waves than lean meat and AI kinds actual information from deceptive “noise,” or irregularities.
Hisashi Ishida, president of Sonofai, the startup behind the know-how, who additionally heads Ishida Tec Co., which makes food-manufacturing tools, says it is safer, extra sanitary and environment friendly.

“Fatty fish tastes good, feels higher in your tongue and is known as ‘toro,’ ” he mentioned. “Abroad wants are rising as a result of sushi tradition is now appreciated all over the world.”
Beef has a grading system for fats and anticipated taste, however having the ability to gauge the standard of tuna is new, based on Hideto Okada, who oversees AI at Fujitsu.
Sonofai makes use of the identical know-how as medical ultrasound scans the place high-frequency inaudible sound waves are absorbed or bounced again to create video-like pictures of issues that are not seen, like a fetus inside a mom’s womb. Not like the CT scan or X-ray, it does not use radiation, which may hurt tissue.
Chris Edwards, a medical physician and professor at Queensland College of Know-how, who trains sonographers, or health-care professionals who focus on ultrasound, has studied how ultrasound can be utilized to see the fattiness of a human liver, linked to diabetes and different well being issues.
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Tuna goes right into a particular machine referred to as Sonofai that may detect the quantity of fattiness within the fish meat by utilizing ultrasound, sensors and AI at a Fujitsu facility in Kawasaki, Japan Wednesday, April 9, 2025. Credit score: AP Picture/Yuri Kageyama
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The particular machine proven by Fujitsu relays the outcomes of the sound waves beamed on a tuna fish to evaluate its fattiness reveals up on the display screen at a Fujitsu facility in Kawasaki, Japan Wednesday, April 9, 2025. Credit score: AP Picture/Yuri Kageyama
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Sushi chef Junichi Kurita demonstrates how the fatty tuna appears to be like completely different from the leaner variety, and serves it with soy sauce and wasabi relish to reporters April 9, 2025 at a Fujitsu facility in Kawasaki, exterior Tokyo. Credit score: AP Picture/Yuri Kageyama
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Prospects look to purchase tuna sushi meals at a market in Tokyo, Japan, Thursday, April 10, 2025. Credit score: AP Picture/Ayaka McGill
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From left, Hideto Okada, a Fujitsu official in command of AI, Hisashi Ishida, the top of startup Sonofai and Ishida Tec, and Keiichi Goto, professor at Tokai College pose in entrance of a machine referred to as Sonofai, at a Fujitsu facility in Kawasaki, Japan Wednesday, April 9, 2025. Credit score: AP Picture/Yuri Kageyama
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A stall sells tuna sushi units at Tsukiji market in Tokyo Thursday, April 10, 2025. Credit score: AP Picture/Ayaka McGill
“They’ll have a look at one fish and evaluate it to a different and say ‘Oh, that one’s undoubtedly obtained extra fats than that one,'” he advised The Related Press in an interview.
However Sonofai will not be at your neighborhood sushi chef.
Fish-processing outfits and fishing organizations are the probably patrons. The machine is about to go on sale in June for about 30 million yen ($207,000) every, at first in Japan however increasing to the U.S. and different locations later. They’re going to additionally work on future upgrades to check for freshness, firmness and different traits of tuna and different fish varieties.
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A machine utilizing ultrasound and AI can gauge the fattiness of a tuna fish (2025, April 10)
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