The team at the Berkeley, California-based Bio Architecture Lab engineered a form of E. coli bacteria that can digest the seaweed’s sugars into ethanol. – Reuters Photo

WASHINGTON: Energy experts believe that seaweed holds enormous potential as a biofuel alternative to coal and oil, and US-based scientists said Thursday they have unlocked the secret of turning its sugar into energy.

A newly engineered microbe can do the work by metabolizing all of the major sugars in brown seaweed, potentially making it a cost-competitive alternative to petroleum fuel, said the report in the US journal Science.

The team at the Berkeley, California-based Bio Architecture Lab engineered a form of E. coli bacteria that can digest the seaweed’s sugars into ethanol, it said.

Unlike other microbes before, researchers found it can attack the primary sugar constituent in seaweed, known as alginate.

“Our scientists have engineered an enzyme to degrade and a pathway to metabolize the alginate, allowing us to utilize all the major sugars in seaweed, said Daniel Trunfio, chief executive officer at Bio Architecture Lab.

The advance “makes the biomass an economical feedstock for the production of renewable fuels and chemicals,” he said.

A company spokesman told AFP that the lab currently has four aquafarming sites in Chile where it hopes to “scale up its microbe technology as the next step on the path to commercialization” in the next three years.

Seaweed is seen as an appealing option for biofuel because, unlike corn and sugar cane, it does not use arable land and so does not compete with crops grown for food.

Less than three percent of the world’s coastal waters can produce enough seaweed to replace some 60 billion gallons of fossil fuel, according to background information in the article.

At peak production, seaweed could produce 19,000 liters per hectare annually, about twice the level of ethanol productivity from sugarcane and five times higher than the ethanol productivity from corn.

Funding for the research came from the US Department of Energy’s Advanced Research Projects Agency, a grant from InnovaChile, and Norwegian oil giant Statoil.

Opinion

Editorial

Counterterrorism plan
Updated 23 Nov, 2024

Counterterrorism plan

Lacunae in our counterterrorism efforts need to be plugged quickly.
Bullish stock market
23 Nov, 2024

Bullish stock market

NORMALLY, stock markets rise gradually. In recent months, however, Pakistan’s stock market has soared to one ...
Political misstep
Updated 23 Nov, 2024

Political misstep

To drag a critical ally like Saudi Arabia into unfounded conspiracies is detrimental to Pakistan’s foreign policy.
Kurram atrocity
Updated 22 Nov, 2024

Kurram atrocity

It would be a monumental mistake for the state to continue ignoring the violence in Kurram.
Persistent grip
22 Nov, 2024

Persistent grip

An audit of polio funds at federal and provincial levels is sorely needed, with obstacles hindering eradication efforts targeted.
Green transport
22 Nov, 2024

Green transport

THE government has taken a commendable step by announcing a New Energy Vehicle policy aiming to ensure that by 2030,...