Algal Research-Biomass Biofuels and Bioproducts最新文献_第10页

Enhancing Arthrospira platensis productivity by optimizing mixing rates in a self-cooling flat plate photobioreactor 通过优化自冷却平板光生物反应器中的混合率提高板金节肢动物的生产率

IF 4.6 2区生物学

Algal Research-Biomass Biofuels and Bioproducts Pub Date : 2025-04-09 DOI: 10.1016/j.algal.2025.104035

Behnam Amanna , Parisa A. Bahri , Guangjie Zhang , Navid R. Moheimani

{"title":"Enhancing Arthrospira platensis productivity by optimizing mixing rates in a self-cooling flat plate photobioreactor","authors":"Behnam Amanna , Parisa A. Bahri , Guangjie Zhang , Navid R. Moheimani","doi":"10.1016/j.algal.2025.104035","DOIUrl":"10.1016/j.algal.2025.104035","url":null,"abstract":"<div><div><em>Arthrospira platensis</em> has been a dietary staple for decades. While raceway ponds are commonly used for mass cultivation, closed photobioreactors (PBRs) offer higher productivity and reduced contamination risks. Mixing rate is a critical factor influencing microalgal growth and productivity. This study examines the impact of air injection flow rates (0.17–0.27 vvm), corresponding to superficial gas velocities of 0.00315–0.0050 m·s<sup>−1</sup>, on the growth, productivity, and effective quantum yield (f'q/f'm) of <em>A. platensis</em> in a 140 L self-cooling flat plate PBR with an infrared-reflective thin-film coating that enables passive temperature control and reduces energy demand for cooling.</div><div>The optimal gas velocity of 0.00389 m·s<sup>−1</sup> yielded an average productivity of 0.126 g·L<sup>−1</sup>·d<sup>−1</sup>. Beyond this velocity, at 0.00426 m·s<sup>−1</sup>, there was neither significant increase in productivity, nor a notable decrease in f'q/f'm. However, at higher gas velocities of 0.00463 m·s<sup>−1</sup> and 0.0050 m·s<sup>−1</sup>, f'q/f'm decreased significantly, by up to 48.6 %, indicating adverse effects on the microalgal cells. Lower velocities (<0.00389 m·s<sup>−1</sup>) did not affect f'q/f'm but resulted in inadequate mixing, reducing biomass productivity by 16.4 % and 23.8 % for 0.00352 and 0.00315 m·s<sup>−1</sup>.</div><div>A validated growth model accurately predicted <em>A. platensis</em> growth (R<sup>2</sup> = 94.5 % for biomass, 81.2 % for temperature). Moreover, Experimental data from Perth, Australia, during spring and winter aligned closely with model predictions. This integration of experimental data and predictive modelling highlights the importance of precise mixing rate optimization in maximizing microalgal productivity and demonstrates the reliability of such models for advancing large-scale algal cultivation.</div></div>","PeriodicalId":7855,"journal":{"name":"Algal Research-Biomass Biofuels and Bioproducts","volume":"88 ","pages":"Article 104035"},"PeriodicalIF":4.6,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143828372","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Isolation and identification of native microalgae from the Yellow River Delta: A dual-focus study on the tolerance assessment of microalgae and their growth enhancement on Sesbania cannabina under saline-alkali stress 黄河三角洲原生微藻的分离与鉴定——盐碱胁迫下微藻对大麻大叶的耐受性评价及其促进生长的双焦点研究

IF 4.6 2区生物学

Algal Research-Biomass Biofuels and Bioproducts Pub Date : 2025-04-08 DOI: 10.1016/j.algal.2025.104033

Xiao Yu , Siming Li , Jiahao Liang , Shenkun Liu , Yinchu Wang , Jianchao Yang , Chenggang Ren , Chunli Ji , Hongli Cui , Song Qin

{"title":"Isolation and identification of native microalgae from the Yellow River Delta: A dual-focus study on the tolerance assessment of microalgae and their growth enhancement on Sesbania cannabina under saline-alkali stress","authors":"Xiao Yu , Siming Li , Jiahao Liang , Shenkun Liu , Yinchu Wang , Jianchao Yang , Chenggang Ren , Chunli Ji , Hongli Cui , Song Qin","doi":"10.1016/j.algal.2025.104033","DOIUrl":"10.1016/j.algal.2025.104033","url":null,"abstract":"<div><div>Saline and alkaline land improvement and restoration are imminent, and the application of microalgae has received great attention as an effective strategy. In this study, we focused on microalgae isolated from the Yellow River Delta in Dongying, China, and identified and characterized them by light microscopy and 18S rDNA gene sequence analysis, and five new algal strains were identified as <em>Chlorella</em> spp. in the family Chlorophyceae. The growth response of the algal strains under different stress conditions was evaluated by measuring the growth status, biomass, pH, and salt removal rate. The results showed that the LDC and YHH strains were more tolerant to salinity stress. In addition, the effects of two applications, via seed soaking and root irrigation, on the morphological index of <em>Sesbania cannabina</em> under normal conditions as well as under different NaCl, NaHCO<sub>3</sub>, and NaCl and NaHCO<sub>3</sub> (1:1 mixture) stresses (100 mM, 200 mM) were investigated. The combined results showed that living microalgae promoted seed germination and seedling growth of <em>S. cannabina</em> under saline stress, with the LDC strain showing superior growth-promoting effects, and its stress-relieving effect outweighed the growth-stimulating effect. These results provide strong support for the sustainable application of native saline-tolerant microalgae in halophytic crop production in saline agriculture.</div></div>","PeriodicalId":7855,"journal":{"name":"Algal Research-Biomass Biofuels and Bioproducts","volume":"88 ","pages":"Article 104033"},"PeriodicalIF":4.6,"publicationDate":"2025-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143855304","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Harnessing diatoms for sustainable economy: Integrating metabolic mechanism with wastewater treatment, biomass production and applications 利用硅藻促进可持续经济：将代谢机制与废水处理、生物质生产和应用相结合

IF 4.6 2区生物学

Algal Research-Biomass Biofuels and Bioproducts Pub Date : 2025-04-08 DOI: 10.1016/j.algal.2025.104031

Chufeng Zhang , Yuxuan Wu , Mingchu Zhang , Zhaoyang Li , Xing Tian , Guorui Li , Jun Huang , Cong Li

{"title":"Harnessing diatoms for sustainable economy: Integrating metabolic mechanism with wastewater treatment, biomass production and applications","authors":"Chufeng Zhang , Yuxuan Wu , Mingchu Zhang , Zhaoyang Li , Xing Tian , Guorui Li , Jun Huang , Cong Li","doi":"10.1016/j.algal.2025.104031","DOIUrl":"10.1016/j.algal.2025.104031","url":null,"abstract":"<div><div>In the context of carbon neutrality, microalgae-based technologies are gaining recognition as a crucial pathway to sustainable development. Diatoms are a major group of eukaryotic algae that contribute significantly to global carbon fixation and exhibit strong adaptability to environmental stresses. Characterized by a silicified cell wall (frustule) and specialized metabolism, diatoms can be used to generate diverse biomass with high economic value. These attributes position them as promising candidates for the simultaneous application of wastewater bioremediation and biomass production. This review provides a comprehensive overview of diatom growth and metabolism, with a particular focus on mixotrophy and metabolic responses to environmental factors. Their potential for bioremediation in aquaculture and food industry wastewater is critically examined. Furthermore, the diverse applications of diatom biomass are explored, including its role in agricultural biofertilization and aquaculture feed supplementation with antimicrobial, disease-preventive, and growth-promoting properties. Notably, the silicified cell wall offers inherent advantages in cost-effectiveness and performance, making it a promising material for applications in catalysis, biosensors, and energy storage. Additionally, a feasibility analysis within the framework of the circular economy underscores the potential of diatoms in expanding the value chain and enhancing resource utilization efficiency. This review aims to deepen the understanding of diatom metabolic mechanisms to optimize cultivation strategies and provide comprehensive insights into diatom-mediated circular economic processes.</div></div>","PeriodicalId":7855,"journal":{"name":"Algal Research-Biomass Biofuels and Bioproducts","volume":"88 ","pages":"Article 104031"},"PeriodicalIF":4.6,"publicationDate":"2025-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143826186","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mechanical characterization of algal cultivation systems for enhanced mass transfer 增强传质的藻类培养系统的力学特性

IF 4.6 2区生物学

Algal Research-Biomass Biofuels and Bioproducts Pub Date : 2025-04-08 DOI: 10.1016/j.algal.2025.104032

Peter Ofuje Obidi, David J. Bayless

{"title":"Mechanical characterization of algal cultivation systems for enhanced mass transfer","authors":"Peter Ofuje Obidi, David J. Bayless","doi":"10.1016/j.algal.2025.104032","DOIUrl":"10.1016/j.algal.2025.104032","url":null,"abstract":"<div><div>Mass transfer limitations pose a significant barrier to the industrial-scale deployment of algal cultivation systems, hindering efficient nutrient and gas exchange critical for applications in biofuel production, wastewater treatment, and carbon sequestration. This review aims to address this challenge by systematically evaluating mechanical strategies to enhance mass transfer, offering a novel integration of fluid dynamics, transport phenomena, and process engineering principles tailored to algal biotechnology. Unlike prior studies emphasizing biological or biochemical aspects, this review uniquely focuses on mechanical methods—stirring, bubbling, paddlewheel systems, and photobioreactor design—quantitatively assessing their impact on mass transfer optimization. Through mathematical modeling and empirical case studies, this review demonstrates that mechanical enhancements can increase mass transfer coefficients by 30–60 %, with innovative systems like rotating membranes reducing energy consumption by up to 90 % compared to conventional approaches. However, scale-dependent flow dynamics present persistent challenges, with transfer efficiency declining by 30–60 % from laboratory to industrial scales without adaptive design adjustments. This review bridges mechanical engineering and algal biotechnology, providing a robust analytical framework supported by predictive models and validated data to overcome mass transfer barriers. These findings underscore the potential for mechanically optimized systems to improve scalability and economic viability, advancing algae-based technologies toward sustainable industrial solutions. By addressing a critical research gap, this review offers actionable insights for researchers and engineers seeking to enhance algal productivity across diverse applications.</div></div>","PeriodicalId":7855,"journal":{"name":"Algal Research-Biomass Biofuels and Bioproducts","volume":"88 ","pages":"Article 104032"},"PeriodicalIF":4.6,"publicationDate":"2025-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143823540","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Impact of salinity on morphology, growth, and pigment profiles of Scenedesmus obliquus HTB1 under ambient air and elevated CO2 (10 %) conditions 环境空气和二氧化碳浓度升高（10%）条件下盐度对斜花菜HTB1形态、生长和色素谱的影响

IF 4.6 2区生物学

Algal Research-Biomass Biofuels and Bioproducts Pub Date : 2025-04-08 DOI: 10.1016/j.algal.2025.104027

Fanglue Jiao , Kyarii Ramarui , Changfei He , Elizabeth W. North , Yantao Li , Feng Chen

{"title":"Impact of salinity on morphology, growth, and pigment profiles of Scenedesmus obliquus HTB1 under ambient air and elevated CO2 (10 %) conditions","authors":"Fanglue Jiao , Kyarii Ramarui , Changfei He , Elizabeth W. North , Yantao Li , Feng Chen","doi":"10.1016/j.algal.2025.104027","DOIUrl":"10.1016/j.algal.2025.104027","url":null,"abstract":"<div><div>Certain microalgal species, such as <em>Scenedesmus obliquus</em> strain HTB1, thrive under high CO<sub>2</sub> concentrations, making them promising for carbon sequestration to mitigate climate change. Isolated from the Baltimore Inner Harbor, HTB1 grows faster with 10 % CO<sub>2</sub> than with ambient air. To investigate its responses to salinity and elevated CO<sub>2</sub>, two experiments were conducted. In the first, HTB1 was cultured at seven different salinities (0, 17.5, 20, 22.5, 25, 27.5, and 30 ppt) (parts per thousand) under ambient air. Higher salinity caused cell shrinkage, color changes from green to pale white, reduced pigments like zeaxanthin, lutein, and chlorophyll <em>b</em>, but increased canthaxanthin. Growth declined significantly above 22.5 ppt. The second experiment compared HTB1's response to salinity (0, 10, 20 ppt) under air and 10 % CO<sub>2</sub>. Cultures under 10 % CO<sub>2</sub> showed minimal color changes, while those under air shifted from green to brown, with salinity having less inhibitory effects on growth under elevated CO<sub>2</sub>. Interestingly, lutein and canthaxanthin levels rose with salinity in 10 % CO<sub>2</sub>. These findings indicate that elevated CO<sub>2</sub> mitigates salt stress in HTB1, reducing its impact on growth and promoting adaptive pigment changes. This study sheds light on how salinity and CO<sub>2</sub> interact to influence HTB1's morphology, growth, and pigment composition, enhancing our understanding of its resilience and potential applications.</div></div>","PeriodicalId":7855,"journal":{"name":"Algal Research-Biomass Biofuels and Bioproducts","volume":"88 ","pages":"Article 104027"},"PeriodicalIF":4.6,"publicationDate":"2025-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143828370","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Worldwide distribution, current trends and scientific progress in Spirulina research (1967–2024): A Scientometric analysis 螺旋藻研究的全球分布、当前趋势和科学进展（1967-2024）：科学计量学分析

IF 4.6 2区生物学

Algal Research-Biomass Biofuels and Bioproducts Pub Date : 2025-04-07 DOI: 10.1016/j.algal.2025.104029

Michele Corrêa Bertoldi , Monique Ellen Torres Resende , Joyce Késsia Alves Grigório , Hernani Ciro Santana

{"title":"Worldwide distribution, current trends and scientific progress in Spirulina research (1967–2024): A Scientometric analysis","authors":"Michele Corrêa Bertoldi , Monique Ellen Torres Resende , Joyce Késsia Alves Grigório , Hernani Ciro Santana","doi":"10.1016/j.algal.2025.104029","DOIUrl":"10.1016/j.algal.2025.104029","url":null,"abstract":"<div><div>Spirulina is a promising functional food with versatile applications in the environment, animal feed, cosmetics, biofuel production, agriculture, biotechnology, and medicine. This study presents the first scientometric analysis of the scientific literature concerning Spirulina published worldwide in the Web of Science database (1967–2024). The descriptive and network/visualization analyses were carried out via WoS tools and CiteSpace, respectively. It presents a visualization of complex information (5899 articles) from a broad perspective. The number of publications increased 11.3 times from 2002 to 2022, whereas the average number of citations per year increased by 32.3 times in the same period. Most academic production of Spirulina has been carried out by researchers from China (15.1 % of the world production), India (11.6 %), the USA (8.2 %), Brazil (8.0 %) and Egypt (6.5 %). Over the past twenty years, research on Spirulina has advanced significantly, revealing remarkable progress in understanding its health benefits and applications for food and dietary supplementation purposes. Spirulina shows promise for modulating the gut microbiota, but robust human clinical studies are lacking. Even though spirulina is a potential source of biodiesel, high production costs still hinder its commercial viability. Spirulina production has a significant positive impact on waste reduction, bioremediation and economic diversification. While Spirulina production continues to present growing opportunities across various sectors, from health to energy, there is a clear need to overcome gaps related to scalability, consumer acceptance, lifecycle assessments, engine performance, economic feasibility and regulation to maximize its positive impact on the circular economy and global sustainability.</div></div>","PeriodicalId":7855,"journal":{"name":"Algal Research-Biomass Biofuels and Bioproducts","volume":"88 ","pages":"Article 104029"},"PeriodicalIF":4.6,"publicationDate":"2025-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143815724","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of salt concentration and trophic mode on glucosylglycerol and phycocyanin production by Arthrospira maxima 盐浓度和营养方式对最大节螺旋藻产糖甘油和藻蓝蛋白的影响

IF 4.6 2区生物学

Algal Research-Biomass Biofuels and Bioproducts Pub Date : 2025-04-04 DOI: 10.1016/j.algal.2025.104025

Jianke Huang , Ting Yao , Sanjiong Yi , Dawei Sun , Pan Zhang , Hanlong Wang , Xiwen Xue , Ruizeng Zhang

{"title":"Effects of salt concentration and trophic mode on glucosylglycerol and phycocyanin production by Arthrospira maxima","authors":"Jianke Huang , Ting Yao , Sanjiong Yi , Dawei Sun , Pan Zhang , Hanlong Wang , Xiwen Xue , Ruizeng Zhang","doi":"10.1016/j.algal.2025.104025","DOIUrl":"10.1016/j.algal.2025.104025","url":null,"abstract":"<div><div><em>Arthrospira maxima</em> is an excellent cyanobacterial strain for phycocyanin production, while it has also recently been employed to produce a high-value product called glucosylglycerol that can be used as a cosmetic and food ingredient. In this study, the effect of NaCl-induced salt stress on cell growth, glucosylglycerol (GG) and phycocyanin (PC) production by <em>A. maxima</em> was investigated. The results suggested that the addition of NaCl effectively induced GG synthesis in cyanobacteria. The GG content increased from 0 % to the highest level of 15.29 % with increasing NaCl concentrations from 0 to 900 mM. However, the highest GG yield (174.54 mg L<sup>−1</sup>) was obtained at 600 mM NaCl as a higher NaCl concentration significantly reduced the biomass concentration. Furthermore, the PC content decreased from 17.44 to 9.72 %, and the PC yield sharply reduced from 333.63 to 80.00 mg L<sup>−1</sup>, indicating that increasing salt concentration adversely affected PC production. Consequently, the NaCl concentration of 300 mM was considered a suitable option for simultaneous production of PC and GG, under which both the high yields of GG (149.00 mg L<sup>−1</sup>) and PC (249.05 mg L<sup>−1</sup>) were achieved. Moreover, trophic mode markedly influenced GG synthesis in <em>A. maxima.</em> Photoautotrophic cells accumulated as much as 15.77 % GG in cyanobacterial cells, whereas only 6.28 % GG accumulated in mixotrophic cells, resulting in a significantly lower GG yield. In conclusion, the application of salt stress was an effective approach to producing GG under the photoautotrophic mode, and a medium salt concentration was the optimal option to simultaneously achieve high productivities of GG and PC. This study lays a foundation for efficient co-production of PC and GG, facilitating the high-value utilization of <em>Arthrospira maxima.</em></div></div>","PeriodicalId":7855,"journal":{"name":"Algal Research-Biomass Biofuels and Bioproducts","volume":"88 ","pages":"Article 104025"},"PeriodicalIF":4.6,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143807017","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Integrated approach for wastewater remediation and biofertilizer development using Chlorella vulgaris in raceway ponds 利用小球藻开发污水修复与生物肥料的综合方法

IF 4.6 2区生物学

Algal Research-Biomass Biofuels and Bioproducts Pub Date : 2025-03-31 DOI: 10.1016/j.algal.2025.104022

Daniela Delgado Pineda , Mery Y. Flores Guetti , Ximena Rosado-Espinoza , Muhammad Ajaz Ahmed , Gilberto J. Colina Andrade , Ruly Terán Hilares

{"title":"Integrated approach for wastewater remediation and biofertilizer development using Chlorella vulgaris in raceway ponds","authors":"Daniela Delgado Pineda , Mery Y. Flores Guetti , Ximena Rosado-Espinoza , Muhammad Ajaz Ahmed , Gilberto J. Colina Andrade , Ruly Terán Hilares","doi":"10.1016/j.algal.2025.104022","DOIUrl":"10.1016/j.algal.2025.104022","url":null,"abstract":"<div><div>Wastewater is quite complex and requires a series of different processes for its treatment. Vermifilters are one such strategy that significantly reduces pollutants but with limited ability to remove phosphorus and nitrogen. To address this, the effluent from the vermifilters can be further processed by microalgae, which can enhance water quality. In this study, microalgae were cultivated in an outdoor raceway pond, using treated wastewater as medium, and the resulting biomass was used as a biofertilizer for Cherry tomato (<em>Solanum lycopersicum</em> var. <em>cerasiforme</em>) cultivation. The microalgae treatment led to significant reductions of 78 % in COD, 86 % in phosphorus, and 45 % in nitrogen (<em>p</em> < 0.05). A microalgae concentration of 1.45 g/L was achieved, with a productivity rate of 0.43 g/L/day. The microalgae biomass contained 56.17 % protein, 30.73 % carbohydrates, and 18 % lipids. After 90 days of growth, cherry tomato plants fertilized with the microalgae-based biofertilizer produced a total weight of 622.4 g, compared to 756.5 g with chemical NPK fertilizer (20-20-20) and 285.4 g with no fertilizer (the control). In terms of other growth metrics such as average height, dry biomass, and number of leaves; the plants treated with commercial fertilizer reached the best results, following by the microalgae biofertilizer and finally, the control showed the least growth. These results suggest that microalgae-based biofertilizer can be a promising alternative, particularly for sandy loam soils, which are usually employed for tomato cultivation.</div></div>","PeriodicalId":7855,"journal":{"name":"Algal Research-Biomass Biofuels and Bioproducts","volume":"88 ","pages":"Article 104022"},"PeriodicalIF":4.6,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143777386","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Comparative analysis of the of red seaweed polysaccharides on hypertension–associated biomarkers in cadmium chloride-induced Wistar rats 红藻多糖对氯化镉诱导的 Wistar 大鼠高血压相关生物标志物的比较分析

IF 4.6 2区生物学

Algal Research-Biomass Biofuels and Bioproducts Pub Date : 2025-03-28 DOI: 10.1016/j.algal.2025.104021

Chaithanya Bose , Penchala Udaya Bhanu , Kajal Chakraborty , Lokanatha Valluru , Shubhajit Dhara , Shilpa Kamalakar Pai

{"title":"Comparative analysis of the of red seaweed polysaccharides on hypertension–associated biomarkers in cadmium chloride-induced Wistar rats","authors":"Chaithanya Bose , Penchala Udaya Bhanu , Kajal Chakraborty , Lokanatha Valluru , Shubhajit Dhara , Shilpa Kamalakar Pai","doi":"10.1016/j.algal.2025.104021","DOIUrl":"10.1016/j.algal.2025.104021","url":null,"abstract":"<div><div>Red seaweeds, recognized for their diverse polysaccharide structures, exhibit significant therapeutic potential in modulating the renin-angiotensin-aldosterone system (RAAS) to mitigate hypertension, a major risk factor for cardiovascular diseases. This study investigates the antihypertensive properties of polysaccharides extracted from four Rhodophyta species: <em>Gracilaria salicornia</em> (GSP), <em>Gracilaria edulis</em> (GEP), <em>Gelidiella acerosa</em> (GAP), and <em>Gelidium pusillum</em> (GPP), using a cadmium chloride (CdCl₂)-induced hypertensive model in Wistar rats. GSP (100 mg/kg BW) significantly reduced hypertension-associated biomarkers, including angiotensin II (>65 %), C-reactive protein and myoglobin (>54 %), and troponin I and T (∼72 %), compared to GEP, GAP, and GPP in hypertensive rats (<em>p</em> < 0.05). GSP also improved serum levels of vitamin E (0.15 μg/mL) and nitric oxide (7.31 μg/mL), comparable to the telmisartan group, which restored vitamin E and nitric oxide to 0.24 μg/mL and 8.27 μg/mL, respectively. Antioxidant assays revealed a significant reduction in enzymatic antioxidant activity in CdCl₂-induced hypertensive rats relative to the healthy control group, with notable recovery upon GSP treatment. Histopathological evaluation indicated restored structural integrity of extracellular and cellular components in GSP-treated hypertensive rats, highlighting its potential to alleviate hypertension-induced oxidative stress.</div></div>","PeriodicalId":7855,"journal":{"name":"Algal Research-Biomass Biofuels and Bioproducts","volume":"88 ","pages":"Article 104021"},"PeriodicalIF":4.6,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143800499","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Physiochemical insights into substrate-diatom adhesion: Influence of surface properties on biofilm dynamics and productivity 基质-硅藻粘附的物理化学见解：表面特性对生物膜动力学和生产力的影响

IF 4.6 2区生物学

Algal Research-Biomass Biofuels and Bioproducts Pub Date : 2025-03-28 DOI: 10.1016/j.algal.2025.104024

Manikandan Sivakumar , Inbakandan Dhinakarasamy , Clarita Clements , Naren Kumar Thirumurugan , Subham Chakraborty , Anu Chandrasekar , Jeevitha Vinayagam , Kumar Chandrasekaran , Thirugnanasambandam Rajendran , S.A.S. Suriyaraj , K.R. Arjun Aditiya

{"title":"Physiochemical insights into substrate-diatom adhesion: Influence of surface properties on biofilm dynamics and productivity","authors":"Manikandan Sivakumar , Inbakandan Dhinakarasamy , Clarita Clements , Naren Kumar Thirumurugan , Subham Chakraborty , Anu Chandrasekar , Jeevitha Vinayagam , Kumar Chandrasekaran , Thirugnanasambandam Rajendran , S.A.S. Suriyaraj , K.R. Arjun Aditiya","doi":"10.1016/j.algal.2025.104024","DOIUrl":"10.1016/j.algal.2025.104024","url":null,"abstract":"<div><div>Diatoms play a significant role in biofilm formation due to their unique surface properties and robust extracellular polymeric substance (EPS) production. This study investigates the influence of substrate and diatom surface physiochemical parameters on adhesion and biofilm productivity. Using <em>Amphora coffeiformis</em> COR_3 and <em>Nitschzia microcephala</em> COR_2 as a model organism, results highlighted that the adhesion density varied significantly with substratum type. The strongly polar <em>N. microcephala</em> COR_2 cells (γ<sup>p</sup> = 32.5 ± 0.89 mJ/m<sup>2</sup>) favored increased adhesion towards glass with adhesion density of 3.017 × 10<sup>5</sup> cells/mm<sup>2</sup>. Conversely, <em>A. coffeiformis</em> COR_3 with its intense dispersive component (γ<sup>LW</sup> = 24.1 ± 0.08 mJ/m<sup>2</sup>) promoted strong adhesion towards PE with adhesion density of 2.938 × 10<sup>5</sup> cells/mm<sup>2</sup>. <em>A. coffeiformis</em> favored adhesion with hydrophobic substrates via van der Waals interactions, facilitated by hydrophobic methylene groups on its surface. While, <em>N. microcephala</em> promoted adhesion with the hydrophilic substrates through acid-base interactions and hydrogen bonding. These findings are further complemented by the varying EPS composition with <em>A. coffeiformis</em> producing protein-rich EPS on hydrophobic substrates, while <em>N. microcephala</em> releasing carbohydrate-rich EPS on hydrophilic substrates. This surface chemistry driven biofilm formation provides a baseline for optimizing the diatom-substrate pairs to enhance biofilm performance in industrial applications.</div></div>","PeriodicalId":7855,"journal":{"name":"Algal Research-Biomass Biofuels and Bioproducts","volume":"88 ","pages":"Article 104024"},"PeriodicalIF":4.6,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143739295","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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