Dunaliellatertiolecta

Subject: Polity

Section: National Organisation

The team used a mix of an extract of a marine microalga called Dunaliellatertiolecta and polysaccharides to produce it. The microalga is known for its antioxidant properties and has various bioactive compounds such as carotenoids and proteins.
It is also used to produce algal oil, a non-animal source of omega-3 fatty acid and is considered a good source of biofuel. After the oil is extracted, the residue is usually discarded.
The researchers used extracts from this residue in formulating their film, in combination with chitosan, which is a carbohydrate. It also has antimicrobial and antifungal properties and can be made into an edible film.
The researchers said, “The films were made with varying algal extract contents and their properties were analysed and compared with controls. They displayed superior antioxidant activity, thermal stability, mechanical strength, total phenolic content and water vapour barrier property. They also had excellent UV-Vis light-blocking properties”.