research

This plastic film used in food packaging can inactivate Covid virus

Proved capable of eliminating 79.9% of the particles of SARS-CoV-2 in 3 minutes

This plastic film used in food packaging can inactivate Covid virus

Rio de Janeiro, November 20

Researchers have claimed that transparent stretchable plastic (PVC) film used in packaging meat, fruit, other foods and to protect surfaces, can inactivate the novel Coronavirus responsible for the Covid-19 outbreak worldwide.

Marketed by Brazilian plastics manufacturer Alpes, the material contains silver and silica nanoparticles, a technology developed and licensed by Nanox.

In tests conducted at the University of Sao Paulo's Biomedical Sciences Institute (ICB-USP), the PVC film proved capable of eliminating 79.9 per cent of the particles of SARS-CoV-2 in three minutes and 99.99 per cent in up to 15 minutes.

"Elimination of the virus by the material was extremely effective and fast," said study author Lucio Freitas Junior from ICB-USP.

"It's a very different application from the more than 40 products that attack the novel coronavirus tested by us since the start of the pandemic," Freitas added.

The film was tested against ISO 21702:2019, the technical standard governing the measurement of antiviral activity on plastic and other non-porous surfaces, and requiring demonstration of this capability within four hours.

Samples of the material with and without silver-silica nanoparticles were kept in direct contact with SARS-CoV-2 for varying amounts of time.

After the stipulated periods, the viral particles found in the material were removed and placed in contact with Vero cells to measure the infection and replication rate after exposure to the film.

Vero cells are derived from the kidney of an African monkey and widely used in microbiological cultures.

The viral genetic material was quantified by PCR, showing a reduction of almost 100 per cent in copies of SARS-CoV-2 after 15 minutes of exposure to the film.

"Considering its use in wrapping for food products that are exposed and handled in supermarkets, 15 minutes for the film to eliminate the virus completely from the surface of the material is satisfactory," researchers wrote. IANS

Don't Miss

Arrival of pets has been the exact disruption we needed

Arrival of pets has been the exact disruption we needed

Modi to Ganguly, how different is BCCI?

Modi to Ganguly, how different is BCCI?

Sins of the father & the aftermath

Sins of the father & the aftermath

Summer of 69, in Himalayas

Summer of 69, in Himalayas

Congress in need of overhaul

Congress in need of overhaul

Top Stories

Himachal enforces night curfew in Covid-affected Shimla, Mandi, Kullu, Kangra districts

Himachal enforces night curfew in Covid-affected Shimla, Mandi, Kullu, Kangra districts

The fine for not wearing masks has been increased from Rs 50...

Supreme Court pulls up Delhi, Gujarat over worsened Covid situation

Supreme Court pulls up Delhi, Gujarat over worsened Covid situation

Seeks status reports by Thursday; further hearing on Friday

Rail services resume in Punjab; coal rakes reach Banawala thermal plant

Rail services resume in Punjab; coal rakes reach Banawala thermal plant

17 trains to run in Punjab, J&K from November 24

Former Assam CM Tarun Gogoi dies at 84

Former Assam CM Tarun Gogoi dies at 84

The 84-year-old three-time Assam CM was admitted to GMCH aft...

Youth shoots self dead after killing ex-girlfriend, her parents in Bathinda

Youth shoots self dead after killing ex-girlfriend, her parents in Bathinda

In video, he accused the trio of threatening to slap rape ch...

Cities

View All