Abstract
Background/aim Nowadays, packaging research is receiving considerable attention because of the development of ecofriendly materials made from natural polymers such as starch and chitosan. This study aimed to prepare composite films from starch-chitosan, incorporated with Thymus vulgaris essential oil (S-CH-Th), and to evaluate their antibacterial, antioxidant and optical properties. Materials and methods The molecular weight of chitosan was (~400 kDa, 75-85% deacetylated). 27% amylose corn starch, Tween 80, DPPH (2, 2-diphenyl-1-picrylhydrazyl) and Folin-Ciocalteu reagent were used to carry out research. Antibacterial activity testing was performed using the disk method. Antioxidant activity test was performed using a spectrophotometric method with DPPH as the radical source. Essential oil concentrations ranging from 0 to 2%, incorporated into a starch-chitosan composite (S-CH) film, were used. Results Antibacterial and antioxidant properties increased significantly with the incorporation of Essential oils (EO) (P Conclusion S-CH edible films incorporated with thyme EO as a natural antibacterial and antioxidant agent may potentially be used as an active packaging to enhance the safety of foods and food products.
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