Related Experiment Video
Updated: Jul 17, 2026

Determination of Total Lipid and Lipid Classes in Marine Samples
Published on: December 11, 2021
Proximate composition, fatty acids, cholesterol, minerals in frozen red porgy
Sofia Miniadis-Meimaroglou1, Christos Dimizas, Vassilis Loukas
1University of Athens, Department of Chemistry, Panepistimiopolis, Zografou, 15701 Athens, Greece. miniadou@chem.uoa.gr
Abstract:
The proximate composition of frozen red porgy (Pagrus pagrus) was determined. The moisture, ash, protein and total lipids (45.5+/-1.4% PL of which 90.4+/-2.0% PhL) were found to be 71.7+/-1.0%, 1.73+/-0.12%, 21.5+/-0.8% and 0.81+/-0.09% of the wet muscle tissue, respectively. 16:0 and 18:0 were the main SFA, 18:1 (omega-9 and omega-7) the main MUFA while DHA, EPA and arachidonic acid were the main polyunsaturated fatty acids (PUFA). The SFA/PUFA ratio was 1.5 and the omega-3/omega-6 ratio was 3.02. The cholesterol content was found to be 8.18+/-0.34 mg/100 g of the wet muscle tissue. Ni, Cr, Mn, Cu, Zn, Fe and Mg were determined in the muscles, skin, hepatopancreas and head of the fish. The covering percentage of the recommended daily allowance/intake (RDA/RDI) for each mineral, in the muscle tissue, has been calculated to 14.2% (males) and 7.89% (females) for Fe, 2.87% for Cu, 4.07% for Zn 0.4% for Mn, 13.9% for Ni, 20.2% for Cr and 10.4% for Mg.
Related Concept Videos
Red Algae
Membrane Fluidity
Lipids: Dietary Sources and Requirements
Structure of Lipids
Cholesterol: Significance and Regulation
Considering cholesterol and...
Overview of Fatty Acid Metabolism
Fatty acids are catabolized in a process called beta-oxidation, which takes place in the matrix of the mitochondria and converts their fatty acid chains into two-carbon units of acetyl groups. The acetyl...

