26 Mar 2021 --- Russian and Indian scientists have created a water-soluble, edible film for food packaging, dissolving by 90 percent within 24 hours. The researchers say they see no obstacles to industrial commercialization but must first improve the film’s antibacterial and shelf life properties. The film is composed of sodium alginate (SA), a naturally occurring seaweed biopolymer. SA is proficient in developing a characteristic edible film, say the study authors, which will extend the shelf life of fruits, vegetables, poultry and seafood.