Fig. 1

Effect of extraction time on the concentration of collagen (mg mL−1) at any time t during ultrasound power carried out at liquid to solid ratio of 20 mL g− 1 and pepsin (2000 U g− 1)
Effect of extraction time on the concentration of collagen (mg mL−1) at any time t during ultrasound power carried out at liquid to solid ratio of 20 mL g− 1 and pepsin (2000 U g− 1)