@article{fdi:010094855, title = {{A}ssessment of contaminant concentrations and nutritional value of {N}ew {C}aledonian seaweeds}, author = {{L}agourgue, {L}. and {P}ayri, {C}laude and {Z}ubia, {M}. and {R}obert, {V}incent and {W}aeles, {M}. and {V}anderklift, {M}. {A}. and {S}teven, {A}. and {M}attio, {L}.}, editor = {}, language = {{ENG}}, abstract = {{W}hile the seaweed industry is developing worldwide, the untapped diversity of species in {N}ew {C}aledonia offers many opportunities for value-added products that can stimulate the local blue economy. {H}owever, human activities and the particular geology of the archipelago can release contaminants into the marine environment. {S}eaweeds bioaccumulate heavy metals and other contaminants from their growing environment, which can pose a significant food safety concern and a barrier to developing seaweed-based products. {I}n this study, we measured heavy metals, metalloids, minerals, iodine, persistent organic pollutants, and pesticide residues in 17 species of interest. {W}e assessed the nutritional benefits and health risks in accordance with current food safety regulations and calculated the {H}azard {I}ndex. {O}ur analyses revealed considerable variability across taxonomic groups, sites, and habitats. {N}ew {C}aledonian species can make significant contributions to daily requirements in several micro and macroelements. {H}owever, all our samples exceeded the {E}uropean total arsenic maximum limit (for food additives), and half of the species exceeded the {F}rench recommendations for inorganic arsenic in seaweed-based products. {A} few samples exceeded the {F}rench recommendations for {C}admium, the maximum limit for {I}odine, and the {E}uropean maximum limit for some polycyclic aromatic hydrocarbons. {F}ive species were identified as safe for consumption: {C}aulerpa oligophylla, {C}odium sp., {G}racilaria salicornia, {U}lva meridionalis, and {U}mbraulva kuaweuweu. {O}ur study offers new data on contaminant concentrations across multiple species and establishes a health-based framework for selecting safe species and guiding their appropriate use in developing {N}ew {C}aledonia's seaweed industry.}, keywords = {{M}acroalgae ; {M}arine resources ; {B}lue economy ; {A}quaculture ; {H}azard {I}ndex ; {F}ood safety ; {NOUVELLE} {CALEDONIE}}, booktitle = {}, journal = {{M}arine {P}ollution {B}ulletin}, volume = {221}, numero = {}, pages = {118443 [13 ]}, ISSN = {0025-326{X}}, year = {2025}, DOI = {10.1016/j.marpolbul.2025.118443}, URL = {https://www.documentation.ird.fr/hor/fdi:010094855}, }