Antioxidative Properties of Mackerel Scomber japonicus Fed a Diet Fortified with Conjugated Linoleic Acid and Ascidian Halocynthia roretzi Tunic Extract

Autor: Si-Hyang Park, Byeong-Dae Choi, Yeung-Joon Choi, Seok-Joong Kang, Yeong-Lae Ha, Eun Jung Park
Rok vydání: 2011
Předmět:
Zdroj: Korean Journal of Fisheries and Aquatic Sciences. 44:183-190
ISSN: 0374-8111
DOI: 10.5657/kfas.2011.0183
Popis: This study was performed to assess the antioxidative properties of lipid from aquacultured mackerel Scomber japonicus fed with a diet fortified with conjugated linoleic acid (CLA) and ascidian Halocynthia roretzi tunic extracts by radical scavenging assay. The fish were separated into squid oil (Control) and 2.5% CLA (CA25) groups during the 8-week feeding period. The reducing power of each sample showed high levels of activity compared with α-tocopherol and butylated-hydroxyanisol (BHA) at 0.2-1.0 mg/mL of lipid. Inhibition of linoleic acid oxidation in samples from Control and CA25 groups showed similar activity after 2 days of incubation at 40℃. The 2,2-diphenyl-1-picrylhydrazyl (DPPH), superoxide, and hydroxyl radical scavenging activities of CLA and carotenoid-deposited sample (CA25) were higher than those of the Control group. The results indicated that the lipid extracted from the viscera of mackerel showed slightly higher antioxidant activities than that from the muscle.
Databáze: OpenAIRE