Japanese researchers hope to restore coral from Saudi-made structures

Saudi Expo Pavilion staff shows a visitor a piece of skeletal structures that was made using 3-D printers. (ANJ)
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Updated 05 January 2026
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Japanese researchers hope to restore coral from Saudi-made structures

  • Coral skeletons made for Saudi Pavilion at Japan expo last year
  • Results of Japanese study to be revealed at Riyadh Expo 2030

TOKYO: Japanese universities are seeking to restore coral reefs and marine ecosystems after receiving artificial structures that Saudi Arabia made and showcased at last year’s Osaka-Kansai Expo.

The coral skeletons were donated to the University of the Ryukyus in Okinawa and Kansai University in Osaka Prefecture, Kyodo News reported at the weekend.

The structures are made from calcium carbonate, a material on which corals are believed to grow more easily compared to artificial alternatives such as concrete or metal.

The skeletal structures were created using 3-D printers, with one piece produced a day during the expo, and displayed across an entire wall in the Saudi Arabia Pavilion, which had an area focusing on sustainable marine environments.

Coral reefs serve as habitats for much marine life, but over 40 percent of the world’s 892 species face possible extinction, according to the International Union for Conservation of Nature.

The University of the Ryukyus, which received about 150 of the artificial coral skeletons, will place them in waters off the eastern coast of Okinawa’s main island and then examine their impact on the ecosystem.

Kansai University has placed theirs in the sea around Kagoshima Prefecture’s Yoron Island to observe their growth after transplanting coral polyps onto the structures.

The results of the research are expected to be revealed at the Riyadh Expo in 2030.

“I had never imagined that Japan and Saudi Arabia would cooperate on coral research,” said Masato Ueda, a professor specializing in regenerative medicine at Kansai University.

Ueda said he wants to demonstrate to children that “humanity is attempting to restore the environment.”


Is sourdough Saudi Arabia’s latest craft food?

Updated 07 February 2026
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Is sourdough Saudi Arabia’s latest craft food?

  • Saudi home bakers point to a practice that was once routine, not artisanal
  • Naturally fermented bread reflects a broader shift toward process-driven, premium food culture

ALKHOBAR: Sourdough has started to shift from a niche interest into a mainstream feature of home kitchens, cafes and specialty bakeries across the Kingdom.

The rise of sourdough is part of a wider shift in Saudi Arabia’s food landscape, where artisanal production and slower preparation methods are gaining traction.

Specialty coffee seems to have set the early template for this transition, normalizing premium pricing, craftsmanship and an interest in process.

The rise of sourdough is part of a wider shift in Saudi Arabia’s food landscape, where artisanal production and slower preparation methods are gaining traction. (Supplied/creativecommons)

Bread is now undergoing a similar shift, with fermentation replacing extraction and roasting as the central point of differentiation.

In both cases, the appeal is rooted in the product’s perceived authenticity, reduced additives, and a clearer link between raw ingredients and final consumption.

Home bakers in Riyadh, Jeddah and the Eastern Province have adapted natural yeast cultures to the Saudi environment, adjusting feeding schedules, hydration ratios, and fermentation times to accommodate higher temperatures and lower humidity in the summer months.

HIGHLIGHTS

• Home bakers in Riyadh, Jeddah and the Eastern Province have adapted natural yeast cultures to the Saudi environment.

• They adjust feeding schedules, hydration ratios, and fermentation times to accommodate higher temperatures and lower humidity in the summer months.

Cafes and specialty bakeries have responded by adding sourdough loaves, baguettes and focaccia to their menus, often positioned as premium alternatives to conventional commercial bread.

For younger home bakers, the appeal lies in the craft and the learning curve rather than nostalgia. “It feels more real and more intentional,” home baker Sarah Al-Almaei told Arab News. She began experimenting with natural yeast at home after watching starter tutorials online.

The technical aspect — hydration percentages, fermentation control and starter maintenance — has become content in its own right, with TikTok and Instagram compressing trial-and-error learning into short videos and recipe cards.

But the practice of maintaining a natural yeast culture is not new in Saudi Arabia. Long before sourdough became a global trend, Saudi households kept what was commonly referred to as the “mother dough,” a natural yeast starter fed and used daily.

“We used to maintain it every day and bake with it,” said Hessa Al-Otaibi, 56, a Saudi home baker with more than four decades’ experience. “People today call it sourdough. For us, it was simply bread.”

Her comment highlights a cultural continuity that has remained largely unrecognized, partly because the practice was not framed as artisanal or health-oriented, but as a routine household function.

The modern sourdough trend differs in its market positioning. While the older model was practical and domestic, the current model is commercial, aesthetic and often health-coded. Bakeries justify higher pricing through longer fermentation times, higher ingredient costs and smaller batch production.

Consumers justify their purchases through digestibility, perceived health benefits, flavor and product integrity.

“Once you get used to it, it’s hard to go back,” said Amina Al-Zahrani, a regular buyer of sourdough from specialty bakeries in Alkhobar.

Digestibility and texture are often cited as reasons for substitution, especially among buyers who report discomfort from standard commercial bread.

Another consumer, Majda Al-Ansari, says sourdough has become part of her weekly routine, noting that availability and quality have improved significantly in the past year.

The social media component has played an outsized role in accelerating adoption. Home bakers document starter feeding cycles, cold proofing and first bakes, turning a once-private domestic process into visible public content.

This has also created micro-markets of home-based sellers, where individual bakers offer loaves to local buyers, often fulfilling orders through direct messaging.

What remains to be seen is how far the trend will scale. If specialty bakeries continue to expand and consumers maintain willingness to pay premium prices, sourdough could establish a long-term place in Saudi food culture.

If not, it may revert to a smaller niche of committed home bakers and specialty cafes. For now, however, sourdough occupies an unusual position: both a newly fashionable trend and a quiet continuation of an older Saudi baking practice.