TY - JOUR
T1 - Chemical structure and antioxidant activity of cephalopod skin ommochrome pigment extracts
AU - Esparza-Espinoza, Dania Marisol
AU - Santacruz-Ortega, Hisila Del Carmén
AU - Chan-Higuera, Jesús Enrique
AU - Cárdenas-López, José Luis
AU - Burgos-Hernández, Armando
AU - Carbonell-Barrachina, Ángel A.
AU - Ezquerra-Brauer, Josafat Marina
N1 - Publisher Copyright:
© 2022, Sociedade Brasileira de Ciencia e Tecnologia de Alimentos, SBCTA. All rights reserved.
PY - 2022
Y1 - 2022
N2 - Significant opportunities exist in the use of seafood by-products to create new beneficial products. Moreover, cephalopod skin is a good source of bioactive compounds. The present study compares the chemical structure properties and antioxidant activity of pigments extracted from the skin of Octopus vulgaris (OVS) and Dosidicus gigas (DGS) with methanol-HCl (T1) and ethanol-HCl (T2). The solubility and spectroscopic analysis (UV-Vis and1H NMR) indicated that extracted pigments belonged to the ommochrome family. Xanthommatin, dihydroxanthommatin, and kynurenine compounds were identified in the extracts using correlated homonuclear spectroscopy (COSY). The results showed that OVS yielded a higher recovery rate of pigments with antioxidant activity (DPPH, ABTS, and FRAP) than DGS in both solvents. T1 extracted the highest level of antioxidant pigments. The kynurenine proportion and proton peaks observed at 3.0-5.0 ppm (amino-aromatics) in the1H NMR spectra may explain the differences in antioxidant activity of OVS and DGS.
AB - Significant opportunities exist in the use of seafood by-products to create new beneficial products. Moreover, cephalopod skin is a good source of bioactive compounds. The present study compares the chemical structure properties and antioxidant activity of pigments extracted from the skin of Octopus vulgaris (OVS) and Dosidicus gigas (DGS) with methanol-HCl (T1) and ethanol-HCl (T2). The solubility and spectroscopic analysis (UV-Vis and1H NMR) indicated that extracted pigments belonged to the ommochrome family. Xanthommatin, dihydroxanthommatin, and kynurenine compounds were identified in the extracts using correlated homonuclear spectroscopy (COSY). The results showed that OVS yielded a higher recovery rate of pigments with antioxidant activity (DPPH, ABTS, and FRAP) than DGS in both solvents. T1 extracted the highest level of antioxidant pigments. The kynurenine proportion and proton peaks observed at 3.0-5.0 ppm (amino-aromatics) in the1H NMR spectra may explain the differences in antioxidant activity of OVS and DGS.
KW - Antioxidant
KW - Cephalopod skin
KW - Chemical structure
KW - Ommochrome pigments
UR - http://www.scopus.com/inward/record.url?scp=85126117985&partnerID=8YFLogxK
U2 - 10.1590/fst.56520
DO - 10.1590/fst.56520
M3 - Artículo
AN - SCOPUS:85126117985
SN - 1678-457X
VL - 42
JO - Food Science and Technology
JF - Food Science and Technology
M1 - e56520
ER -