Rapid authentication and composition determination of cellulose films by UV-VIS-NIR spectroscopy

In recent years, efforts to develop new materials for the food industry have focused mainly on polysaccharides- and proteins-based films or coatings. Fast inexpensive analytical tools are needed guarantee their compositions. This work evaluates feasibility of a rapid accurate method based UV-VIS-NIR spectroscopy combined with chemometric techniques analyze polysaccharide-based authentication composition determination. As case study, cellulose-based (vegetable bacterial) chitosan polyvinyl alcohol were used as biocomposite models. Applying techniques, it was obtained models predict content chitosan, cellulose. Linear discriminant analysis authenticate cellulose films, showing an accuracy 100% classify function source bacterial). It concluded that chemometrics can be origin determine films.