Determination of functional compounds in blue shark (Prionace glauca) liver oil obtained by green technology

Author(s)

Santos, D. N. ^[1] ; Silva, F. S. ^[1] ; Verde, A. B. ^[1] ; Bittencourt, G. M. ^[1] ; de Oliveira, A. L. ^[1]

Affiliation

^[1] Univ Sao Paulo FZEA USP, Lab Tecnol Alta Pressao & Prod Nat LTAPPN, Dept Food Engn, Fac Anim Sci & Food Engn, Av Duque de Caxias Norte 225, Caixa Postal 23, BR-13635900 Pirassununga, SP - Brazil

• Document type: Journal article
• Source: GRASAS Y ACEITES; v. 71, n. 2 APR-JUN 2020.
• Web of Science Citations: 0

Abstract

The objectives of this research were to obtain blue shark liver oil using supercritical CO2 and to characterize the physicochemical parameters of the oil, and the contents of squalene and vitamin A. Supercritical extractions were performed at 50 and 60 degrees C and pressures from 100 to 300 bar. The oil yield obtained was up to 60% and presented a profile equivalent to that of refined oils for density (0.920 - 0.922 g/mL); viscosity (52.55 - 56.47 Pas.\$); refractive index (1.4760 - 1.4785); acid value (1.13 - 2.22% oleic acid); peroxides (10.47 - 24.04 meq of active O-2/kg of oil); saponification value (171.37 - 556.03 mg KOH/g oil), and iodine value (120.05 - 149.21g I-2/100g oil). The fatty acid profile indicated a majority of unsaturated fatty acids. High levels of squalene and vitamin A corroborate the high nutritional quality of this oil from an underexploited by-product with great processing potential. (AU)

• FAPESP's process: 12/06981-0 - Study of the particle formation and encapsulation using RESS (Rapid Expansion of Supercritical Solutions)
• Grantee: Alessandra Lopes de Oliveira
• Support Opportunities: Regular Research Grants
• FAPESP's process: 13/18347-7 - Supercritical extraction of dogfish liver oil (Prionace glauca) and physical-chemical characterization
• Grantee: Alessandra Barros Verde
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• FAPESP's process: 12/00467-3 - MICROENCAPSULATION OF SQUALENE FROM DOGFISH LIVER OIL THROUGH PRECIPITATION WITH SUPERCRITICAL CO2 USING THE RESS TECHNIQUE
• Grantee: Débora Nascimento e Santos
• Support Opportunities: Scholarships in Brazil - Doctorate