Microbial reclamation of squid pen

Byproducts generated in great amounts by marine processes have been recognized for their value as recyclable or reclaimable waste. Squid have been investigated to extract β-chitin from squid pen (SP), produce peptides with angiotensin-I-converting enzyme (ACE)-inhibitory, antihypertensive, and antibacterial activities from squid skin, and isolate polysaccharides with antitumor and antibacterial activities from squid ink. To further meliorate the utilization of SP, we have recently explored the bioconversion of SP for the production of bioactive materials. Rather than endeavoring to review the literatures, this paper recapitulated our recently published efforts in the region of microbial reclamation of SP.