Researchers at Indian Institute of Technology (IIT), Madras have developed a food wrapping material which is not only anti-bacterial in nature but also biodegradable. According to the team which has also filed a patent for the wrapper, their product can tackle two major problems – prevent packaged food contamination by bacteria as well as reduce the plastic waste generated in the environment when disposing the wrappers.

“The wrapping material we have developed also degrades at various environmental conditions with the rate of degradation varying from 4 to 98 per cent in 21 days. The wrapping material degraded rapidly in moist conditions when compared to dry ones. Hence, our wrapper is eco-friendly and can play a major role in plastic waste reduction,” he added.

The films developed by researchers were made with polymeric blends containing starch, polyvinyl alcohol, cyclic beta glycans (CBG). The composition was optimised to achieve the best film with a smooth texture, flexibility, uniform thickness and good clarity.

“Our study found that 99.999 per cent reduction in bacterial colonies was observed in food samples wrapped with our anti-bacterial wrap and stored at 30 degrees Celsius for 10 days when compared with a plain wrapper. This study also suggests that our anti-microbial wrapper can, to some extent overcome, the reduced availability of cold storage units. Paneer is known to have a very low shelf life (less than 7 days) and hence extending its shelf life is a major advantage,” she added.

The researchers also found that the wrapping material degraded at various environmental conditions with rate of degradation varying from 4 to 98 per cent in 21 days. The material degraded rapidly in moist condition when compared to dry ones.