Could seaweed stop coronavirus from infecting human cells? – study

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The Jerusalem Post:

A team of researchers from Tel Aviv University say they have found that ulvan could help stop the spread of coronavirus.

Could a substance extracted from edible marine algae stop coronavirus from infecting human cells? Ulvan, the major water-soluble polysaccharide extracted from the cell wall of green seaweed, could help stop coronavirus from infecting human cells, according to a team of researchers from Tel Aviv University.

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“The lack of access to vaccines takes the lives of many victims and even accelerates the creation of new variants,” said TAU’s Prof. Alexander Golberg, who led the study on ulvan that was recently published in PeerJ − a peer-reviewed science journal. “The study is still in its early stages, but we hope that the discovery will be used in the future to develop an accessible and effective drug, preventing infection with the coronavirus.

“Our findings at this stage arouse cautious optimism,” he said.Golberg and his team have been working with seaweed for the past eight years, looking for different compounds, mainly for the food industry. But he said that during the first lockdown, they started to think about how they could play a role in helping find solutions for the pandemic. Through other research they knew that certain seaweed compounds had antiviral properties and so decided they wanted to evaluate them against COVID.

Getting started proved a challenge, Golberg recalled, mainly because they needed access to the virus, which was not readily available in Israel. He said only the Israel Institute of Biological Research had it, so they had to look outside the country.Ultimately, they partnered with a university in Alabama.They then decided to test ulvan because it could be extracted from common seaweed.

“Ulvan is extracted from marine algae called Ulva, which is also called ‘sea lettuce,’ and is food in places like Japan, New Zealand and Hawaii,” Golberg explained. “It has previously been reported that ulvan is effective against viruses in agriculture and also against some of the human viruses − and when coronavirus arrived, we asked to test its activity.”

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