Nucleotides and free amino acids in sea urchin Paracentrotus lividus gonads: Contributions for freshness and overall taste

Carolina Camacho; Tatiana Correia; Bárbara Teixeira; Rogério Mendes; Luísa M P Valente; M Fernanda Pessoa; M Leonor Nunes; Amparo Gonçalves

doi:10.1016/j.foodchem.2022.134505

Nucleotides and free amino acids in sea urchin Paracentrotus lividus gonads: Contributions for freshness and overall taste

Food Chem. 2023 Mar 15;404(Pt A):134505. doi: 10.1016/j.foodchem.2022.134505. Epub 2022 Oct 5.

Authors

Carolina Camacho¹, Tatiana Correia², Bárbara Teixeira², Rogério Mendes², Luísa M P Valente³, M Fernanda Pessoa⁴, M Leonor Nunes⁵, Amparo Gonçalves⁶

Affiliations

¹ Portuguese Institute of Sea and Atmosphere (IPMA, I.P.), Division of Aquaculture, Upgrading and Bioprospection, Av. Doutor Alfredo Magalhães Ramalho 6, 1495-165 Algés, Portugal; Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos S/N, 4450-208 Matosinhos, Portugal; Geobiotec, Earth Sciences Department, Faculty of Sciences and Technology - Nova University of Lisbon, Quinta da Torre, 2829-516 Caparica, Portugal. Electronic address: carollcamacho@ipma.pt.
² Portuguese Institute of Sea and Atmosphere (IPMA, I.P.), Division of Aquaculture, Upgrading and Bioprospection, Av. Doutor Alfredo Magalhães Ramalho 6, 1495-165 Algés, Portugal; Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos S/N, 4450-208 Matosinhos, Portugal.
³ Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos S/N, 4450-208 Matosinhos, Portugal; School of Medicine and Biomedical Sciences (ICBAS), University of Porto, Rua de Jorge Viterbo 228, 4050-313 Porto, Portugal.
⁴ Geobiotec, Earth Sciences Department, Faculty of Sciences and Technology - Nova University of Lisbon, Quinta da Torre, 2829-516 Caparica, Portugal.
⁵ Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos S/N, 4450-208 Matosinhos, Portugal.
⁶ Portuguese Institute of Sea and Atmosphere (IPMA, I.P.), Division of Aquaculture, Upgrading and Bioprospection, Av. Doutor Alfredo Magalhães Ramalho 6, 1495-165 Algés, Portugal; Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos S/N, 4450-208 Matosinhos, Portugal. Electronic address: amparo@ipma.pt.

PMID: 36223671
DOI: 10.1016/j.foodchem.2022.134505

Abstract

This study aims to report the chemical changes, specifically the nucleotides and free amino acids (FAAs) during refrigerated storage of live sea urchin Paracentrotus lividus (7 °C) and packed gonads (2 °C) and respective contributions to overall taste. Results showed that the adenylate energy charge (AEC) is an adequate indicator for live sea urchin through storage, while K-value does not distinguish freshness. Changes of both indexes were not clear in packed gonads. The FAAs profile were related with maturation stage where amino acids associated to sweet (Gly, Ala), umami (Glu) and bitter (Arg, Lys, His, Val) had significant contribution to overall taste. In general, the storage did not significantly affect the FAAs content nor its contribution to overall taste in contrast to nucleotides that seemed to induce potential changes after day 5. The findings provide insights that will complement a full study on quality index scheme development of the products.

Keywords: Adenosine 5′-monophosphate (PubChem CID: 6083); Adenosine triphosphate (PubChem CID: 5957); Alanine (PubChem CID: 5950); Arginine (PubChem CID: 6322); Chemical indicators; Freshness; Glutamic acid (PubChem CID: 611); Glycine (PubChem CID: 750); Gonads; Histidine (PubChem CID: 6274); Inosine 5′-monophosphate (PubChem CID: 135398640); Live seafood; Lysine (PubChem CID: 5962); Refrigerated storage; Sea urchin; Valine (PubChem CID: 6284).

MeSH terms

Amino Acids
Animals
Gonads
Nucleotides*
Paracentrotus*
Taste

Substances

Nucleotides
Amino Acids