Extraction and characterisation of type I collagen from the skin offcuts generated at the commercial fish processing centres.

Effective use of underutilised fish processing by-products could open avenues for new industries if they are used to extract high-valued bioactive compounds. Therefore, discarded skin offcuts of three main commercial fish species of Sri Lanka were used to extract collagen with acetic acid and the extracted collagen was evaluated for industrial suitability. The yields of acid-soluble collagens from Yellowfin tuna (), Seer fish () and Asian sea bass () were 61.