B. Recovery of bioactive compounds
1. Little research has been done on recovering bioactive compounds from surimi wash water
⑴ Cathepsin L,
⑵ Amino acids
⑶ Anserine and carnosine – problem : increase in the content of trimethylamine spontaneously
2. Major challenge for the recovery of bioactive compounds is the separation of different protein fractions
3. Insoluble proteins can be added back into the surimi or used as a food ingredient in other products
4. If specific soluble proteins are in high enough concentrations and can be targeted for selective removal,
the economic benefits can be worthwhile
④ Opportunities and challenges
1. The fish resources used for surimi production are usually harvested and processed within days or even
hours after capture : Fresher the fish, the higher the yield and better the quality
2. Much of the solid waste is already used and changed into fish meal, hydrolysates, and fertilizers
3. The challenge is to break away from these traditional waste product streams into new products
⑴ Upgrading fish protein hydrolysates to highly functional foods
⑵ The production of fish sauce from surimi by-products
⑶ The acid solubilization and recovery of protein for human food