Chemical composition and flavour characteristics of a liquid extract occurring as waste in crab (Ovalipes punctatus) processing

Abstract

Results presented in this study indicated that O. punctatus extract could be utilised to produce nutritious food or value-added products.

Valorization of snow crab (Chionoecetes opilio) cooking effluents for food applications

“…Several factors may influence the mineral content of the shellfish muscle to give rise to these differences, including the species, environment and diet of the animal . The lipid concentration of the cooking water was slightly higher than the value reported for a crab distillate (3.6 g kg −1 on a dry basis) . For shrimp cooking juices, a decrease in the lipid content was observed with the increase in cooking temperature, which could be explained by the thermal degradation of lipids into volatile compounds .…”

“…This could explain the lower mineral concentrations compared to other marine cooking effluents . However, in other studies, lower ash concentrations were obtained and the addition of salt during cooking was not noted . Several factors may influence the mineral content of the shellfish muscle to give rise to these differences, including the species, environment and diet of the animal .…”

“…The relatively high protein content was expected because crustaceans are rich in proteins (more than 80% of the dry matter content of crab) . In addition, cooking a crustacean releases proteins, peptides and amino acids; however, the protein content was lower than the value reported for a crab distillate (797 g kg −1 crude proteins on a dry matter basis) …”

Protein-peptide nutritional material prepared from surimi wash-water using immobilized chymotrypsin-trypsin

“…Amino acid score (AAS), chemical score (CS), essential amino acid index (EAAI) and biological value (BV) were monitored in order to evaluate the overall nutritional value of PPNM . The volatile compounds in PPNM were analyzed by GC/MS using headspace solid phase microextraction (HS‐SPME) . Xcalibur software was used to analyze the data, retrieving the unknown compounds by matching with a standard NIST 2.0 spectral library.…”

“…23,24 The volatile compounds in PPNM were analyzed by GC/MS using headspace solid phase microextraction (HS-SPME). 25 Xcalibur software 26 was used to analyze the data, retrieving the unknown compounds by matching with a standard NIST 2.0 spectral library. Unknown compounds were authenticated when the pros and cons of matching were greater than 800.…”