{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,3]],"date-time":"2026-09-03T21:24:10Z","timestamp":1788470650124,"version":"build-2803163510"},"reference-count":52,"publisher":"SAGE Publications","issue":"4","license":[{"start":{"date-parts":[[2023,3,27]],"date-time":"2023-03-27T00:00:00Z","timestamp":1679875200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Food sci. technol. int."],"published-print":{"date-parts":[[2024,6]]},"abstract":"<jats:p>This study was conducted to determine whether the macroalgae Ulva papenfussi and Ulva nematoidea could be alternatives for preventing Litopenaeus vannamei vibriosis caused by the bacterium Vibrio parahaemolyticus. Phytochemical screening was performed on methanolic extracts to qualitatively determine the main groups of bioactive compounds, previous to an in vitro antibacterial test against V. parahaemolitycus. Phenols, polyphenols, flavonoids, and the high presence of carbohydrates were found in both macroalgae. U. papenfussi showed more presence of lipids and alkaloids than U. nematoidea. Macroalgae extracts prepared (v:v) with a 1:1 methanol: dichloromethane solvent was used for the in vitro test using the disc diffusion method (MDD). Filter paper discs impregnated with 1.0, 1.5, 2.0, 3.0, and 4.0\u2005mg of the extracts showed antibacterial activity against V. Parahaemolitycus in a dose-dependent manner in both macroalgae. The inhibition zone varied significantly ( p\u2009&lt;\u20090.05) from 8.33\u2009\u00b1\u20090.12 to 11.41\u2009\u00b1\u20090.73\u2005mm for 1 to 3\u2005mg of extract levels, respectively. In conclusion, both macroalgae have antibacterial activity in their crude extracts against this bacteria. It is suggested to evaluate it as a feed additive for L. vannamei. This study is the first report on a phytochemical screening and antibacterial activity of these macroalgae against V. parahaemolyticus.<\/jats:p>","DOI":"10.1177\/10820132231165540","type":"journal-article","created":{"date-parts":[[2023,3,27]],"date-time":"2023-03-27T15:56:33Z","timestamp":1679932593000},"page":"352-360","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":4,"title":["Phytochemical screening and antibacterial assessment of two macroalgae\n                    <i>Ulva papenfussi<\/i>\n                    and\n                    <i>Ulva nematoidea<\/i>\n                    (Chlorophyta) against the bacterium\n                    <i>Vibrio parahaemolyticus<\/i>"],"prefix":"10.1177","volume":"30","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-6587-6650","authenticated-orcid":false,"given":"Jessie","family":"Vargas C\u00e1rdenas","sequence":"first","affiliation":[{"name":"Departamento de Acuicultura e Industrias Pesqueras, Facultad de Pesquer\u00eda, Universidad Nacional Agraria La Molina (UNALM), Lima, Per\u00fa"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jorge","family":"Ch\u00e1vez P\u00e9rez","sequence":"additional","affiliation":[{"name":"Instituto de Investigaci\u00f3n de Bioqu\u00edmica y Biolog\u00eda Molecular, Universidad Nacional Agraria La Molina (UNALM), Lima, Per\u00fa"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nancy","family":"Mart\u00ednez Ordinola","sequence":"additional","affiliation":[{"name":"Departamento de Acuicultura e Industrias Pesqueras, Facultad de Pesquer\u00eda, Universidad Nacional Agraria La Molina (UNALM), Lima, Per\u00fa"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ivan","family":"Soto Rodr\u00edguez","sequence":"additional","affiliation":[{"name":"Departamento Acad\u00e9mico de Estad\u00edstica e Inform\u00e1tica, Facultad de Econom\u00eda, Universidad Nacional Agraria La Molina (UNALM), Lima, Per\u00fa"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6971-3020","authenticated-orcid":false,"given":"Luis Otavio","family":"Brito","sequence":"additional","affiliation":[{"name":"Departamento de Pesca e Aquicultura, Universidade Federal Rural de Pernambuco, Recife, Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2192-3854","authenticated-orcid":false,"given":"Silvio Ricardo Maurano","family":"Peixoto","sequence":"additional","affiliation":[{"name":"Departamento de Pesca e Aquicultura, Universidade Federal Rural de Pernambuco, Recife, Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Alfredo Olivera","family":"Galvez","sequence":"additional","affiliation":[{"name":"Departamento de Pesca e Aquicultura, Universidade Federal Rural de Pernambuco, Recife, Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"179","published-online":{"date-parts":[[2023,3,27]]},"reference":[{"key":"bibr2-10820132231165540","doi-asserted-by":"publisher","DOI":"10.1111\/are.13710"},{"key":"bibr3-10820132231165540","doi-asserted-by":"publisher","DOI":"10.1016\/j.fsi.2018.12.071"},{"key":"bibr4-10820132231165540","doi-asserted-by":"publisher","DOI":"10.1007\/s10811-016-0969-2"},{"key":"bibr5-10820132231165540","doi-asserted-by":"publisher","DOI":"10.1007\/s10499-015-9899-2"},{"key":"bibr6-10820132231165540","doi-asserted-by":"publisher","DOI":"10.1007\/s10811-016-1014-1"},{"key":"bibr7-10820132231165540","doi-asserted-by":"publisher","DOI":"10.1016\/j.foodchem.2009.09.019"},{"key":"bibr8-10820132231165540","doi-asserted-by":"publisher","DOI":"10.1007\/s10499-009-9253-7"},{"key":"bibr9-10820132231165540","first-page":"153","volume":"7","author":"Declarador RS","year":"2014","journal-title":"AACL Bioflux"},{"key":"bibr10-10820132231165540","doi-asserted-by":"publisher","DOI":"10.1007\/978-1-4939-2684-8_25"},{"key":"bibr11-10820132231165540","doi-asserted-by":"publisher","DOI":"10.1016\/j.ceramint.2017.12.084"},{"key":"bibr12-10820132231165540","doi-asserted-by":"publisher","DOI":"10.1016\/j.foodchem.2015.11.119"},{"key":"bibr13-10820132231165540","doi-asserted-by":"publisher","DOI":"10.1007\/s10811-016-0889-1"},{"key":"bibr14-10820132231165540","doi-asserted-by":"publisher","DOI":"10.1016\/j.fsi.2016.02.028"},{"key":"bibr15-10820132231165540","unstructured":"FAO (2020)\n                      The State of World Fisheries and Aquaculture 2020\n                      .\n                      Sustainability in Action\n                      . 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