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Protein, Essential Amino Acid, and Fatty Acid Composition of Five Target Fishery Species of Central Mediterranean Sea.

ABSTRACT: The protein, essential amino acid, and fatty acid composition of European pilchard (Sardina pilchardus), European hake (Merluccius merluccius), surmullet (Mullus surmuletus), red mullet (Mullus barbatus), and deep water rose shrimp (Parapenaeus longirostris) from the central Mediterranean Sea were investigated. All the species showed an essential amino acid content of about 50% of total amino acids, while the protein and total fatty acids content varied from 19.9 to 24.8% and from 1.4 to 5.1%, respectively. The fatty acid profile mainly followed the order SFA (39.1-52.6%) > PUFA (21.0-39.3%) > MUFA (15.6-24.3%). Palmitic and stearic acids were predominant among saturated fatty acids (38-52% and 21-25%, respectively), while palmitoleic and oleic acids were the most represented of the total monounsaturated acids (10-21% and 55-68%, respectively). All the species, as expected, showed a more significant proportion of n-3 PUFA (EPA + DHA) of about 81-93% of the total PUFA, with the highest values was found in European pilchard. Also, several fat quality index values, such as n-6/n-3 ratio, PUFA/SFA, the index of atherogenicity (IA), the index of thrombogenicity (IT), the hypocholesterolemic/hypercholesterolemic ratio (HH), and fish lipid quality/flesh lipid quality (FLQ) were calculated to assess the nutritional quality. All the obtained results, along with the fat quality indexes, indicated the excellent nutritional values of the selected species.

SUBMITTER: Traina A

PROVIDER: S-EPMC11310956 | biostudies-literature | 2024 Jul

REPOSITORIES: biostudies-literature

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Protein, Essential Amino Acid, and Fatty Acid Composition of Five Target Fishery Species of Central Mediterranean Sea.

Traina Anna A Quinci Enza Maria EM Sabatino Nadia N Del Core Marianna M Bellante Antonio A Bono Gioacchino G Giuga Marta M Avellone Giuseppe G Sprovieri Mario M D'Agostino Fabio F

Animals : an open access journal from MDPI 20240724 15

The protein, essential amino acid, and fatty acid composition of European pilchard (Sardina pilchardus), European hake (Merluccius merluccius), surmullet (Mullus surmuletus), red mullet (Mullus barbatus), and deep water rose shrimp (Parapenaeus longirostris) from the central Mediterranean Sea were investigated. All the species showed an essential amino acid content of about 50% of total amino acids, while the protein and total fatty acids content varied from 19 ...[more]

PMID: 39123684

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Project description:This study determined the effect of temperament on antioxidant capacity and the relationship between antioxidant capacity and the contents of amino acids (AA) and fatty acids (FA) in muscle of Hu sheep. Organ and muscle samples of five calm and five nervous Hu sheep were collected to determine the antioxidant capacity and the contents of AA and FA in muscle tissue. The concentrations of malondialdehyde (MDA) and superoxide excretion enzyme (SOD) in muscle and intestinal tissue of calm Hu sheep were lower than those of nervous Hu sheep (p < 0.01), and the activity of glutathione peroxidase (GSH-Px) in liver of calm Hu sheep was significantly higher than that of nervous Hu sheep (p = 0.050). The content of AA of calm Hu sheep was higher than that of nervous Hu sheep, especially the content of reductive amino acids, which was significantly higher than that of nervous Hu sheep (p = 0.029). Fatty acid content of nervous Hu sheep was higher than that of calm type, and saturated fatty acid content was significantly higher than that of calm type (p = 0.001). The SOD content in muscle tissue was positively correlated with the contents of aspartic acid (Asp), alanine (Ala) and lysine (Lys). Catalase (CAT) activity was positively correlated with Ala content. There was a significant positive correlation between total antioxidants (T-AOC) and glutamate (Glu) (p < 0.05). MDA concentration was positively correlated with lauric acid (C12:0), triseconic acid (C13:0), myristic acid (C14:0) content (p < 0.01), and ginkgo acid (C15:0) content. The total antioxidants (T-AOC) was negatively correlated with stearic acid (C18:0) (p < 0.05). Our conclusion is that the antioxidant capacity of calm Hu sheep is superior to that of nervous Hu sheep, which may be due to the higher AA (especially reductive amino acids (Arg, Lys, Ala and Glu)) content in the muscle and the lower FA (especially SFA) content, which improve the antioxidant capacity of the organism and allow for further exploration of the mechanisms by which animal temperament affects antioxidant performance.

Dataset Information

Protein, Essential Amino Acid, and Fatty Acid Composition of Five Target Fishery Species of Central Mediterranean Sea.

Publications

Protein, Essential Amino Acid, and Fatty Acid Composition of Five Target Fishery Species of Central Mediterranean Sea.

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