Development of hydroxypropyl methylcellulose film with xanthan gum and its application as an excellent food packaging bio-material in enhancing the shelf life of banana

•A novel composite film composed of xanthan gum/hydroxypropyl methylcellulose was prepared.•Xanthan gum had a significant effect on the composite film mechanical strength.•Xanthan gum/hydroxypropyl methylcellulose composite film enhanced banana preservation quality.