Zhoushan explores squid byproducts for health industry growth

An aerial view of Zhoushan. [Photo/VCG]

A research project on protein peptides from squid skin was recently approved under the "Zhejiang Provincial Science and Technology Special Envoy" program, aiming to expand the value of the marine economy in Zhoushan, East China's Zhejiang province.

Zhoushan, known as China's leading distant-water fishery hub, accounts for about 70 percent of the country's squid catch. From January to July, more than 300,000 metric tons of squid were unloaded at Huiqun Terminal. With each ton of squid producing 0.2 tons of skin, about 60,000 tons of squid skin were generated in the same period.

Traditionally used for low-value fish feed, squid skin is now being studied for its potential to yield protein peptides for health supplements and functional foods.

The research team has already achieved breakthroughs in fermentation and enzymatic hydrolysis processes, as well as accurate detection of peptide activity. Initial products are expected within two years, helping shift Zhoushan's squid sector from basic processing to the broader health industry.

As technology matures, squid protein peptides could become a key driver in turning processing residues into high-value ingredients, opening a new growth path for Zhoushan's distant-water fishery industry.