{"title":"培养基组成及重复使用对黄斑紫菜生长的影响","authors":"Florencia Cáceres-Ferroni , María Salinas-García , Silvia Villaró-Cos , Elia Rivera-Sánchez , Tomás Lafarga","doi":"10.1016/j.nbt.2025.09.001","DOIUrl":null,"url":null,"abstract":"<div><div>The aim of this study was to develop a fertiliser-based culture medium to reduce production costs and to enhance the sustainability of producing <em>Porphyridium cruentum</em>, a red marine microalga of commercial interest. Additionally, the impact of water recirculation on microalgal growth was assessed. Overall, the results indicated that the nitrogen source significantly affected biomass growth, with sodium nitrate supporting higher biomass productivity (0.23 g·L<sup>−1</sup>·day<sup>−1</sup>), surpassing sodium nitrite (0.18 g·L<sup>−1</sup>·day<sup>−1</sup>) and ammonium chloride (0.14 g·L<sup>−1</sup>·day<sup>−1</sup>). Urea had a negative impact on growth. A N:P molar ratio of 20:1 increased biomass productivity by approximately 24 % compared to the lower ratio studied (8:1) while also reducing phosphorus demand. The optimal medium composition was: 1.75 g·L<sup>−1</sup> NaNO<sub>3</sub>, 0.23 g·L<sup>−1</sup> K<sub>2</sub>HPO<sub>4</sub>·3 H<sub>2</sub>O, 0.04 g·L<sup>−1</sup> CaCl<sub>2</sub>, 0.49 g·L<sup>−1</sup> MgSO<sub>4</sub>·7 H<sub>2</sub>O, and 24.0 mg·L<sup>−1</sup> Karentol®. Lastly, water reutilisation negatively impacted biomass concentration, promoting the accumulation of extracellular organic carbon and bacteria as well as increasing the viscosity and turbidity of the culture.</div></div>","PeriodicalId":19190,"journal":{"name":"New biotechnology","volume":"90 ","pages":"Pages 65-76"},"PeriodicalIF":4.9000,"publicationDate":"2025-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Effect of culture medium composition and reuse on the growth of Porphyridium cruentum\",\"authors\":\"Florencia Cáceres-Ferroni , María Salinas-García , Silvia Villaró-Cos , Elia Rivera-Sánchez , Tomás Lafarga\",\"doi\":\"10.1016/j.nbt.2025.09.001\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>The aim of this study was to develop a fertiliser-based culture medium to reduce production costs and to enhance the sustainability of producing <em>Porphyridium cruentum</em>, a red marine microalga of commercial interest. Additionally, the impact of water recirculation on microalgal growth was assessed. Overall, the results indicated that the nitrogen source significantly affected biomass growth, with sodium nitrate supporting higher biomass productivity (0.23 g·L<sup>−1</sup>·day<sup>−1</sup>), surpassing sodium nitrite (0.18 g·L<sup>−1</sup>·day<sup>−1</sup>) and ammonium chloride (0.14 g·L<sup>−1</sup>·day<sup>−1</sup>). Urea had a negative impact on growth. A N:P molar ratio of 20:1 increased biomass productivity by approximately 24 % compared to the lower ratio studied (8:1) while also reducing phosphorus demand. The optimal medium composition was: 1.75 g·L<sup>−1</sup> NaNO<sub>3</sub>, 0.23 g·L<sup>−1</sup> K<sub>2</sub>HPO<sub>4</sub>·3 H<sub>2</sub>O, 0.04 g·L<sup>−1</sup> CaCl<sub>2</sub>, 0.49 g·L<sup>−1</sup> MgSO<sub>4</sub>·7 H<sub>2</sub>O, and 24.0 mg·L<sup>−1</sup> Karentol®. Lastly, water reutilisation negatively impacted biomass concentration, promoting the accumulation of extracellular organic carbon and bacteria as well as increasing the viscosity and turbidity of the culture.</div></div>\",\"PeriodicalId\":19190,\"journal\":{\"name\":\"New biotechnology\",\"volume\":\"90 \",\"pages\":\"Pages 65-76\"},\"PeriodicalIF\":4.9000,\"publicationDate\":\"2025-09-11\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"New biotechnology\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S1871678425000834\",\"RegionNum\":2,\"RegionCategory\":\"生物学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"BIOCHEMICAL RESEARCH METHODS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"New biotechnology","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1871678425000834","RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"BIOCHEMICAL RESEARCH METHODS","Score":null,"Total":0}
Effect of culture medium composition and reuse on the growth of Porphyridium cruentum
The aim of this study was to develop a fertiliser-based culture medium to reduce production costs and to enhance the sustainability of producing Porphyridium cruentum, a red marine microalga of commercial interest. Additionally, the impact of water recirculation on microalgal growth was assessed. Overall, the results indicated that the nitrogen source significantly affected biomass growth, with sodium nitrate supporting higher biomass productivity (0.23 g·L−1·day−1), surpassing sodium nitrite (0.18 g·L−1·day−1) and ammonium chloride (0.14 g·L−1·day−1). Urea had a negative impact on growth. A N:P molar ratio of 20:1 increased biomass productivity by approximately 24 % compared to the lower ratio studied (8:1) while also reducing phosphorus demand. The optimal medium composition was: 1.75 g·L−1 NaNO3, 0.23 g·L−1 K2HPO4·3 H2O, 0.04 g·L−1 CaCl2, 0.49 g·L−1 MgSO4·7 H2O, and 24.0 mg·L−1 Karentol®. Lastly, water reutilisation negatively impacted biomass concentration, promoting the accumulation of extracellular organic carbon and bacteria as well as increasing the viscosity and turbidity of the culture.
期刊介绍:
New Biotechnology is the official journal of the European Federation of Biotechnology (EFB) and is published bimonthly. It covers both the science of biotechnology and its surrounding political, business and financial milieu. The journal publishes peer-reviewed basic research papers, authoritative reviews, feature articles and opinions in all areas of biotechnology. It reflects the full diversity of current biotechnology science, particularly those advances in research and practice that open opportunities for exploitation of knowledge, commercially or otherwise, together with news, discussion and comment on broader issues of general interest and concern. The outlook is fully international.
The scope of the journal includes the research, industrial and commercial aspects of biotechnology, in areas such as: Healthcare and Pharmaceuticals; Food and Agriculture; Biofuels; Genetic Engineering and Molecular Biology; Genomics and Synthetic Biology; Nanotechnology; Environment and Biodiversity; Biocatalysis; Bioremediation; Process engineering.