LAUSR

The growth of the fish production chain in the Amazon region brought large investments, generating jobs and income. However, accompanied by economic growth, there was an increase in the accumulation of organic waste without any management and use. Here, we present an elegant solution for efficient recovery of high Bloom gelatin from fish skin (Cynoscion acoupa). A new method has been employed using skin pretreatment with EDTA and reflux extraction with acidified water. The protocol was efficient in gelatin recovery, with a maximum yield of 82%. In addition, we reduce the extraction time to a maximum of 1 h, being able to produce high bloom gelatin, with excellent technological properties. Gelatin showed a high correlation between structural amino acids such as proline and hydroxyproline and pseudoplastic rheological behaviour, with high viscosity. The method is scalable and can be applied to expand socioeconomic opportunities in the Amazon.