RT Journal Article
T1 Protective Effect of Red Algae (Rhodophyta) Extracts on Essential Dietary Components of Heat-Treated Salmon
A1 Ortiz Viedma, Jaime
A1 Aguilera, José M.
A1 Flores, Marcos
A1 Lemus-Mondaca, Roberto
A1 Larrazabal, María José
A1 Miranda López, José Manuel
A1 Aubourg Martínez, Santiago Pedro
K1 Red algae
K1 Antioxidant and antimicrobial ability
K1 Lipoperoxidation
K1 Salmon
AB Salmon paste contains nutritious components such as essential fatty acids (EPA, DHA), vitamin E and astaxanthin, which can be protected with the addition of red algae extracts. Phenolic extracts were prepared with an ethanol: water mixture (1:1) from the red seaweeds Gracilaria chilensis, Gelidium chilense, Iridaea larga, Gigartina chamissoi, Gigartina skottsbergii and Gigartina radula, obtained from the Pacific Ocean. Most algae had a high content of protein (>7.2%), fiber (>55%) and β-glucans (>4.9%), all expressed on a dry weight basis. Total polyphenols (TP), total flavonoids (TF), antioxidant (DPPH, FRAP) and antibacterial power of the extracts were measured. In addition, the nutritional components of the algae were determined. Results showed that the content of TP in the six algae varied between 2.6 and 11.3 mg EAG/g dw and between 2.2 and 9.6 for TF. Also, the extracts of G. skottsbergii, G. chamissoi, G. radula and G. chilensis showed the highest antiradical activity (DPPH, FRAP). All samples exhibited a low production of primary oxidation products, and protection of the essential components and the endogenous antioxidants tocopherols and astaxanthin, particularly in the case of G. skottsbergii, G. chamissoi, G. radula and G. chilensis. Furthermore, all algae had inhibitory activity against the tested microorganisms, coincident with their antioxidant capacity. Results show that the extracts may have future applications in the development and preservation of essential dietary components of healthy foods
PB MDPI
YR 2021
FD 2021
LK http://hdl.handle.net/10347/26665
UL http://hdl.handle.net/10347/26665
LA eng
NO Antioxidants 2021, 10(7), 1108; https://doi.org/10.3390/antiox10071108
DS Minerva
RD 23 abr 2026