Proximal composition and nutritional differentiation of commercially important hydrobiological species from Peru using multivariate analysis
DOI:
https://doi.org/10.17268/Keywords:
Proximate composition, marine species, nutritional value, fish processing industry, PeruAbstract
Hydrobiological resources represent an important source of high biological value proteins and essential fatty acids; however, the nutritional variability among commercial Peruvian species has been scarcely studied in a comparative manner. The aim of this study was to evaluate and differentiate the proximate chemical composition of eight hydrobiological species from Peru using univariate and multivariate analyses. Samples of hake (Merluccius merluccius), jumbo squid (Dosidicus gigas), shrimp (Penaeus vannamei), scallop (Argopecten purpuratus), mackerel (Scomber scombrus), trout (Oncorhynchus mykiss), dolphinfish (Coryphaena hippurus), and bonito (Sarda chiliensis chiliensis) were analyzed to determine moisture, protein, lipids, and ash content following AOAC methods. Data were evaluated using ANOVA (p<0.05), principal component analysis (PCA), and linear discriminant analysis (LDA). Moisture was the predominant component (69.85–81.15%), while protein ranged from 15.83% to 22.14%. Lipids showed the highest variability (0.54–6.12%), allowing classification into lean and fatty groups. PCA indicated that lipids explained 86% of the total variability, and LDA confirmed their role as the main discriminator. It is concluded that lipid content is the primary axis of nutritional differentiation among species.
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Copyright (c) 2026 Fredy Crispin-Sanchez, Fabiola Olivares-Ponce, Raúl Porturas-Olaechea, Tatiana Vergara Miranda, Rodrigo Gamarra Navarrete, Dalia Gallardo Ramirez, Oscar Amado Crisóstomo Gordillo
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