Table 1. Treatment design

Group	Treatment
CTRL	Distilled water
K-SC	Chicken feather keratin-ginger starch composite only
K-SC-APPPE0.2	Chicken feather keratin-ginger starch composite plus 0.2 mL avocado peel polyphenolic-rich extract
K-SC-APPPE0.6	Chicken feather keratin-ginger starch composite plus 0.6 mL avocado peel polyphenolic-rich extract
K-SC-APPPE1.0	Chicken feather keratin-ginger starch composite plus 1.0 mL avocado peel polyphenolic-rich extract