{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,26]],"date-time":"2026-08-26T04:22:40Z","timestamp":1787718160519,"version":"build-2784847793"},"reference-count":83,"publisher":"MDPI AG","issue":"9","license":[{"start":{"date-parts":[[2026,8,24]],"date-time":"2026-08-24T00:00:00Z","timestamp":1787529600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100004837","name":"Ministerio de Ciencia, Innovaci\u00f3n y Universidades","doi-asserted-by":"publisher","award":["PID2020\u2013119734RB-I00"],"award-info":[{"award-number":["PID2020\u2013119734RB-I00"]}],"id":[{"id":"10.13039\/501100004837","id-type":"DOI","asserted-by":"publisher"}]},{"award":["PID2020\u2013119734RB-I00"],"award-info":[{"award-number":["PID2020\u2013119734RB-I00"]}],"id":[{"id":"https:\/\/ror.org\/05r0vyz12","id-type":"ROR","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Mar. Drugs","Marine Drugs"],"abstract":"<jats:p>Yeast infections are becoming an increasing public health concern, mainly due to the spread of opportunistic species and the emergence of strains resistant to commonly used antifungal drugs. Marine resources are a promising source of bioactive compounds, including polysaccharides and other biopolymers with potential antifungal applications. In this study, a sulphated polysaccharide-rich extract was obtained from the red alga Jania pedunculata var. adhaerens and chemically characterized. Its antifungal activity was compared with that of a commercial chitosan formulation against clinically relevant yeasts, including species of Candida, Cryptococcus, Clavispora, Naganishia and Trichosporon. Growth kinetics were monitored in liquid medium over 24 h, and antifungal activity was evaluated through growth rate analysis, growth inhibition at 20 h and susceptibility clustering. The sulphated polysaccharide-rich extract showed moderate but consistent growth inhibition, with the strongest effects observed at 5 mg mL\u22121. Maximum growth inhibition reached 60.9% in Cryptococcus deuterogattii and 59.8% in Candida albicans, although no complete inhibition was observed within the tested concentration range. Chitosan showed a stronger antifungal effect, with minimal inhibitory concentration (MIC) values between 10 and 20 \u00b5g mL\u22121 in several species and maximum inhibition values above 80% in the most susceptible yeasts. However, C. albicans showed marked resistance to chitosan, with inhibition below 12%. K-means clustering confirmed distinct susceptibility profiles between treatments, supporting a species-dependent response. Overall, these results highlight marine-derived biopolymers as promising antifungal candidates and show that chitosan and algal sulphated polysaccharides produce distinct, species-dependent antifungal profiles.<\/jats:p>","DOI":"10.3390\/md24090296","type":"journal-article","created":{"date-parts":[[2026,8,24]],"date-time":"2026-08-24T13:20:43Z","timestamp":1787577643000},"page":"296","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Species-Dependent Antifungal Profiles of Chitosan and Sulphated Polysaccharide-Rich Extract from Jania pedunculata var. adhaerens"],"prefix":"10.3390","volume":"24","author":[{"given":"Miguel","family":"Valverde-Urrea","sequence":"first","affiliation":[{"name":"Department of Marine Sciences and Applied Biology, University of Alicante, Aptdo. Correos 99, 03080 Alicante, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jose","family":"Defez-P\u00e9rez","sequence":"additional","affiliation":[{"name":"Department of Marine Sciences and Applied Biology, University of Alicante, Aptdo. Correos 99, 03080 Alicante, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8672-5429","authenticated-orcid":false,"given":"Maria Francisca","family":"Colom-Valiente","sequence":"additional","affiliation":[{"name":"Department of Microbiology and Plant Production, Miguel Hern\u00e1ndez University, 03550 Alicante, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Marc","family":"Terradas-Fern\u00e1ndez","sequence":"additional","affiliation":[{"name":"Department of Marine Sciences and Applied Biology, University of Alicante, Aptdo. Correos 99, 03080 Alicante, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Luis V.","family":"L\u00f3pez-Llorca","sequence":"additional","affiliation":[{"name":"Department of Marine Sciences and Applied Biology, University of Alicante, Aptdo. Correos 99, 03080 Alicante, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4414-0702","authenticated-orcid":false,"given":"Federico","family":"Lopez-Moya","sequence":"additional","affiliation":[{"name":"Department of Marine Sciences and Applied Biology, University of Alicante, Aptdo. Correos 99, 03080 Alicante, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2026,8,24]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Bongomin, F., Gago, S., Oladele, R.O., and Denning, D.W. (2017). Global and multi-national prevalence of fungal diseases\u2014Estimate precision. J. 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