**3. Materials and Methods**

#### *3.1. Materials*

The materials used in this work are listed below:


• Wheat bran (WB) was provided by WeAreBio organic food; it appears as light brown powder and was used as filler for the PLA/PBSA plasticized blends formulations (CAS number: 130498-22-5; apparent density: 0.51 g/cm3; dietetic soluble fibre: 0.93% (p/p); dietetic insoluble fibre: 19.70% (p/p)).
