Algal Research-Biomass Biofuels and Bioproducts最新文献

{"title":"Alterations in nitrogen metabolism caused by heavy metals in the acid-tolerant microalga Coccomyxa onubensis","authors":"María del Carmen Romero-Cruz ,&nbsp;Antonio Leon-Vaz ,&nbsp;José María Vega ,&nbsp;Javier Vigara","doi":"10.1016/j.algal.2024.103784","DOIUrl":"10.1016/j.algal.2024.103784","url":null,"abstract":"<div><div>The microalga <em>Coccomyxa onubensis</em> is an extremophile microorganism with a unique ecosystem (Río Tinto, Huelva, Spain) that contains high amounts of contaminants, including heavy metals, sulphates, and nitrates, in acidic environments (pH 2.5). The current work presents an evaluation of the capacity of <em>Coccomyxa onubensis</em> to assimilate different nitrogen sources under Cu²⁺, Cd²⁺, AsO₃³⁻, AsO₄³⁻ and Hg²⁺ stress, and the metabolic implications of these stressors. The results showed that ammonium consumption was less affected than nitrate consumption when microalgae were cultivated with heavy metals (except cadmium). The activities of enzymes involved in nitrogen metabolism, such as nitrite reductase (NiR; EC:1.7.7.1), glutamine synthetase (GS; EC:6.3.2.1) and glutamate dehydrogenase (GDH; EC:1.4.1.2) were characterised to determine the Michaelis-Menten constant (<em>K</em>_<em>m</em>) and optimal temperature and pH values, being 45, 40 and 60 °C and pH values of 7.5, 6.0 and 9.0 for NiR, GS, and GDH, respectively. The effects of different heavy metals on these enzymes were assessed at multiple levels, and the results showed that the enzymatic activity of NiR was downregulated, specially under copper stress, maintaining 23 % of control NiR activity at 2 mM Cu²⁺. The enzymatic activity of GS was upregulated at low concentrations under cadmium and mercury stress (115–120 % of control cultures GS activity at 25 μM Cd²⁺ and 50 nM Hg²⁺, respectively) and downregulated at high concentrations of these elements. GDH activity was upregulated in the presence of Cu²⁺, Cd²⁺, and Hg²⁺, with increases up to 192, 155 and 154 % at 1 mM Cu²⁺, 300 μM Cd²⁺, and 250 nM Hg²⁺, respectively. These results provide a better explanation of the effects of heavy metal stress on N metabolism in <em>Coccomyxa onubensis</em>, which may be used as a model eukaryotic organism of the Tinto River acidophilic ecosystem<em>.</em></div></div>","PeriodicalId":7855,"journal":{"name":"Algal Research-Biomass Biofuels and Bioproducts","volume":"84 ","pages":"Article 103784"},"PeriodicalIF":4.6,"publicationDate":"2024-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142656906","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Chemical structure and hydrocarbon generation potentials of cyanobacteria Schizothrix calcicole and its resistant biopolymer","authors":"Xianglan Kong ,&nbsp;Wei Cao ,&nbsp;Yongli Zhang ,&nbsp;Yu Yang ,&nbsp;Yong Ran","doi":"10.1016/j.algal.2024.103786","DOIUrl":"10.1016/j.algal.2024.103786","url":null,"abstract":"<div><div>Microalgae have attracted much attention because of their great potential in the development of sustainable biofuel. In this study, cyanobacteria <em>Schizothrix calcicole</em> was fractionated into different fractions and characterized by elemental analyses, Rock-Eval pyrolysis, and ¹³C NMR. Closed pyrolysis experiments were carried out on the bulk (BL) sample of <em>S. calcicole</em> and its nonhydrolyzable organic matter (NHOM) fraction. The results suggested the NHOM fraction was composed of a saturated and unbranched or weakly branched hydrocarbon chain with a chain length up to 32, which was highly aliphatic resistant biopolymer similar to algaenan in structure, and exhibited higher oil yield (58.1 %) and oil and gas production potentials (OGPs, 63.9 %) than the BL sample did. Moreover, the <em>n-</em>alkanes for the NHOM fraction showed bimodal distribution and were dominated by long chains higher than C₁₅. On the contrary, the BL sample exhibited unimodal distribution of <em>n</em>-alkanes, in which middle- and short-chain <em>n</em>-alkanes with chain length &lt;17 were more abundant. In addition, the results indicated ¹³C NMR is an effective approach to evaluate hydrocarbon generation potentials. Our investigation identifies aliphatic biopolymers in cyanobacteria <em>S. calcicole</em> and improves the understanding of hydrocarbon generation of its different fractions.</div></div>","PeriodicalId":7855,"journal":{"name":"Algal Research-Biomass Biofuels and Bioproducts","volume":"84 ","pages":"Article 103786"},"PeriodicalIF":4.6,"publicationDate":"2024-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142657450","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}

{"title":"Sustainable biorefinery of Ulva stenophylloides, a green-tide species from the South Pacific coast: A study on antioxidant, oligosaccharide, and ulvan extraction","authors":"Loretto Contreras-Porcia ,&nbsp;María Dolores Torres ,&nbsp;Herminia Domínguez ,&nbsp;Julie Queffelec ,&nbsp;Florentina Piña ,&nbsp;Sheyma Inoubli ,&nbsp;Rebeca Aldunate ,&nbsp;Francisca C. Bronfman ,&nbsp;Nancy Pizarro ,&nbsp;Fernanda Toro-Mellado ,&nbsp;Maximillian Pozo-Sotelo ,&nbsp;María Gallardo-Campos ,&nbsp;Benjamín Pinilla-Rojas ,&nbsp;Jorge Rivas ,&nbsp;Jean Pierre Remonsellez","doi":"10.1016/j.algal.2024.103785","DOIUrl":"10.1016/j.algal.2024.103785","url":null,"abstract":"<div><div>In this study, biomass characterization and sustainable biorefinery were determined using microwave-assisted extraction to recover valuable biocompounds from the green-tide species <em>Ulva stenophylloides</em>. The biomass exhibits concentrations of 21 % for proteins; 24.6 % for sulfate; 2.1 % for lipids; 27 % for carbohydrates; 15 % and 11 % for chlorophylls <em>a</em> and <em>b</em>, respectively; and 4.6 % for carotenoids. The temperature of the microwave treatment influenced both the yield and quality of biocompounds, with higher concentrations of phenolic compounds and antioxidant activities observed in the soluble extracts at temperatures between 180 °C and 220 °C, and higher concentrations of oligosaccharides obtained at temperatures from 120 °C to 200 °C. Microwave treatment at 120 °C yielded the highest content of ulvans (21 %), as well as favorable molecular weight and viscoelastic properties. Furthermore, the ulvan extract demonstrated no toxic effect in both <em>in vitro</em> and <em>in vivo</em> toxicological assays. These findings highlight the potential of green tides as a renewable biomass source for various biocompounds, opening up possibilities for future biotechnology research.</div></div>","PeriodicalId":7855,"journal":{"name":"Algal Research-Biomass Biofuels and Bioproducts","volume":"84 ","pages":"Article 103785"},"PeriodicalIF":4.6,"publicationDate":"2024-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142656912","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}

{"title":"Innovative technology for microalgal cell preservation through immobilization in polylactic acid nanofibers","authors":"Ana Claudia Araujo de Almeida ,&nbsp;Bruna da Silva Vaz ,&nbsp;Jorge Alberto Vieira Costa ,&nbsp;Michele Greque de Morais","doi":"10.1016/j.algal.2024.103781","DOIUrl":"10.1016/j.algal.2024.103781","url":null,"abstract":"<div><div>Microalgae are of great biotechnological importance. Thus, it is essential to apply maintenance methods for the utilization of microalgae at any time. Facilitating microalgae adsorption processes on nanofibers may be a promising approach for microalgae preservation. Thus, the objective of this study was to apply poly (lactic acid) nanofibers in the preservation of microalgae <em>Chlorella fusca</em> LEB 111 cells. The nanofibers were characterized regarding their morphology, thermal properties, structural characteristics and wettability. The microalgae cells were immobilized on the nanofibers and stored for 30 days at room temperature, refrigeration and thermostated chamber. Free microalgae cells were also maintained for the same period under the same conditions of the traditional method of microalgae preservation, continuous replication. The cell viability of the free and immobilized cells on the nanofibers was analyzed by Neutral Red (NR) and Trypan Blue (TB). At the end of the experiment, the immobilized cells showed greater viability (94 and 100 %) compared to the free cells (84 %). The cultivation of immobilized cells showed significant cell growth on the 25th day of cultivation for the evaluated storage conditions (3.6, 3.6 and 2.8 g L⁻¹ for refrigeration, room temperature and thermostatted chamber, respectively). Therefore, poly (lactic acid) nanofibers (PLA) are characterized as an innovative technology for microalgae maintenance.</div></div>","PeriodicalId":7855,"journal":{"name":"Algal Research-Biomass Biofuels and Bioproducts","volume":"84 ","pages":"Article 103781"},"PeriodicalIF":4.6,"publicationDate":"2024-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142656953","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}

{"title":"The determining regions, specific genes and markers of sex in Pyropia haitanensis (Bangiales, Rhodophyta)","authors":"Long-chen Tang ,&nbsp;Hong-chang Ding ,&nbsp;Ye-fan Qiu,&nbsp;Xing-hong Yan","doi":"10.1016/j.algal.2024.103780","DOIUrl":"10.1016/j.algal.2024.103780","url":null,"abstract":"<div><div>Genetic studies have confirmed that the sex of <em>Pyropia haitanensis</em> belongs to the genotypic determination. However, the genes involved in the sex determination have not yet been studied. In this study, two double haploid (DH) populations of the male and female were established using the sex-sectored blades produced by a crossing experiment of <em>P. haitanensis</em>, and the sex-linked regions (SLRs) were identified by BSA-Seq, which were located on chromosome 4. HiFi sequencing was performed on the SLRs of female and male for reassembly and gene annotations, and the results showed that the SLRs of female and male contained 93 and 94 genes with sizes of 0.32 and 0.31 Mb, respectively. In the SLRs of female and male, there was a sex-determining region (SDR) containing 5 and 3 genes, respectively. In addition, gene conversion of the SDRs resulted in non-Mendelian genetic segregation with a segregation ratio of male: female to be 4:0, 3:1, 1:3 or 0:4. Two female-specific genes (<em>PhF00071</em> and <em>PhF00072</em>) were found in the female SDR. Gene cloning revealed that the full-length CDS of <em>PhF00071</em> was 816 bp, encoding a protein containing an RWP-RK domain; while the full-length CDS of <em>PhF00072</em> was 858 bp, encoding a protein that did not contain any known domains. qRT-PCR revealed that the expression levels of the two female-specific genes were significantly increased during the formation of female germ cells (<em>P</em> &lt; 0.05). In addition, primers were designed using the specific sequences of female and male SDRs, and the genomic DNA of female, male and heterozygous strains were amplified by PCR. The results proved that only one specific band could appear in female or male strains, while both female and male-specific bands appeared in heterozygous strains. This study lays a foundation for further elucidating the mechanisms of sex determination and sexual maturity in <em>P. haitanensis</em>.</div></div>","PeriodicalId":7855,"journal":{"name":"Algal Research-Biomass Biofuels and Bioproducts","volume":"84 ","pages":"Article 103780"},"PeriodicalIF":4.6,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142656905","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}

{"title":"Evaluation of optimal culture conditions for marine benthic diatom Halamphora coffeaeformis growth and its biochemical properties","authors":"Ninie Diana Baharuddin ,&nbsp;Norulhuda Mohamed Ramli ,&nbsp;Nurarina Ayuni Ghazali ,&nbsp;Hui Teng Tan ,&nbsp;Yam Sim Khaw ,&nbsp;I. Natrah","doi":"10.1016/j.algal.2024.103720","DOIUrl":"10.1016/j.algal.2024.103720","url":null,"abstract":"<div><div><em>Halamphora coffeaeformis</em> is a benthic diatom that exhibits a high-value biochemical composition and can be harnessed for various applications particularly in aquaculture. Despite its potential, significant challenges persist in the optimization of cultivation parameters and scaling up to mass cultivation level. Thus, this study aimed to identify the most suitable substrate, as well as the optimal light intensity, photoperiod, salinity, and pH for the growth of <em>H. coffeaeformis.</em> The biochemical composition of mass-cultured <em>H. coffeaeformis</em> was also analyzed. The findings revealed that polyvinyl chloride (PVC) substrates substantially outperformed bamboo by yielding significantly higher (<em>p</em> &lt; 0.05) growth performance. The maximum specific growth rate (SGR) of <em>H. coffeaeformis</em> was recorded under the following conditions: the light intensity of 120 μmol m⁻² s⁻¹ with an 18: 6 h light/dark cycle (0.200 day⁻¹), the salinity of 30 ppt (0.161 day⁻¹) and the pH of 9 (0.409 day⁻¹). Under these optimized conditions, the mass culture of <em>H. coffeaeformis</em> at 100 L exhibited the highest ash content (38.47 ± 0.17 % dry weight (DW)), followed by crude protein (26.26 ± 0.56 % DW) containing high-quality amino acids, carbohydrates (20.96 ± 0.81 % DW) and crude lipids (4.46 ± 0.56 % DW). The lipid profile was particularly notable for its high saturated fatty acid (SFA) content and sufficient levels of polyunsaturated fatty acids (PUFA), while maintaining the lowest fiber content (0.07 ± 0.01 % DW). These findings underscore the potential of <em>H. coffeaeformis</em> for large-scale aquaculture applications and highlight the importance of fine-tuning cultivation parameters to maximize its biochemical yields.</div></div>","PeriodicalId":7855,"journal":{"name":"Algal Research-Biomass Biofuels and Bioproducts","volume":"84 ","pages":"Article 103720"},"PeriodicalIF":4.6,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142656909","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}

{"title":"Pressurized liquid extraction of bioactive extracts with antioxidant and antibacterial activity from green, red and brown Algerian algae","authors":"Badria Keramane ,&nbsp;Andrea del Pilar Sánchez-Camargo ,&nbsp;Lidia Montero ,&nbsp;Firdousse Laincer ,&nbsp;Fatiha Bedjou ,&nbsp;Elena Ibañez","doi":"10.1016/j.algal.2023.103293","DOIUrl":"https://doi.org/10.1016/j.algal.2023.103293","url":null,"abstract":"<div><p>In this work, the protein, sugar, phenolic and phlorotannin contents, as well as the antioxidant and antibacterial activity of hydroethanolic extracts of six algae species from the west cost of Algeria (<em>Padina pavonica, Halopteris scoparia, Cystoseira mediterranea, Ulva lactuca, Ulva intestinalis, and Ceramium virgatum</em>), obtained by pressurized liquid extraction (PLE) were investigated. <em>Ceramium virgatum</em> PLE extracts showed the highest content of protein (4.36 ± 0.13 %), while the total sugar content was maximum in <em>U. lactuca</em> extract (23.89 ± 0.21 %). Likewise, <em>P. pavonica</em> PLE extract presented a relevant total phenolic content (49.82 ± 1.40 mg GAE/g extract). On the other hand, phlorotannins were only found in brown algae in a range of 1.84–2.93 mg PGE/g. Furthermore, <em>P. Pavonica</em> extract presented considerably higher antioxidant capacity of inhibiting ABTS radical (1.16 ± 0.023 mmol TE/g) and 50 % of DPPH (1,1-diphenyl-2-picryl hydrazyl) (IC₅₀ = 57.03 ± 1.28 μg/mL) in comparison with the other studied algae. Regarding to the potential antimicrobial activity, the results showed that <em>Cystoseira Mediterranea</em> produced the lowest minimal inhibitory concentration on <em>Salmonella typhi</em> (0.83 ± 0.14 mg/mL), <em>Escherichia coli</em> (4.66 ± 0.57 mg/mL), <em>Vibrio cholera</em> (1.08 ± 0.14 mg/mL), and <em>Candida albicans</em> (2.16 ± 0.28 mg/mL). Besides, different carotenoids and phenolic compounds were tentatively identified by LC-DAD in the algae extracts which could be the responsible of the tested bioactivities. These findings show the potential of using PLE as green solvent extraction technique and the prolific bioactivities of Algerian seaweeds.</p></div>","PeriodicalId":7855,"journal":{"name":"Algal Research-Biomass Biofuels and Bioproducts","volume":"76 ","pages":"Article 103293"},"PeriodicalIF":5.1,"publicationDate":"2023-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49825070","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}

{"title":"Antioxidant activities in holopelagic Sargassum species from the Mexican Caribbean: Temporal changes and intra-thallus variation","authors":"Adrián Fagundo-Mollineda,&nbsp;Daniel Robledo,&nbsp;Román Manuel Vásquez-Elizondo,&nbsp;Yolanda Freile-Pelegrín","doi":"10.1016/j.algal.2023.103289","DOIUrl":"https://doi.org/10.1016/j.algal.2023.103289","url":null,"abstract":"<div><p>In the last decade, massive events of <em>Sargassum</em> influx have been reported causing ecological and economic damages. In this study, we evaluated the antioxidant potential of the holopelagic species <em>S. fluitans</em>, <em>S. natans</em> I, and <em>S. natans</em> VIII which arrived during 2018–2019 on the Mexican Caribbean coast. The monthly and intra-thallus variation of the total phenolic content (TPC) and antioxidant activity were determined in hydroethanolic extracts. The antioxidant potential was assessed using two free radical scavenging assays DPPH (2,2-diphenyl-1-picrylhydrazyl) and ABTS (2,2′-azino-bis-3-ethylbenzothiazoline-6-sulfonic acid) and FRAP as ferric reducing antioxidant power assay. All <em>Sargassum</em> species showed radical scavenging and reducing power due to their polyphenol content, but also due to the presence of other antioxidant metabolites such as mannitol, alginate, and fucoidan as observed in the ¹³C NMR spectra. The antioxidant capacity and the TPC in all <em>Sargassum</em> species were enhanced in August 2018 and March–April 2019, coinciding with elevated seawater temperatures and the highest solar irradiances. For all the holopelagic <em>Sargassum</em> species, the highest TPC was obtained in the axes rather than in the vesicles or leaves. These results suggest that invasive <em>Sargassum</em> biomass in the Mexican Caribbean contains different compounds with antioxidant properties and could be considered a natural alternative to synthetic antioxidants, especially if collected in the summer months.</p></div>","PeriodicalId":7855,"journal":{"name":"Algal Research-Biomass Biofuels and Bioproducts","volume":"76 ","pages":"Article 103289"},"PeriodicalIF":5.1,"publicationDate":"2023-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49809098","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}

{"title":"Scaling up of native species for a sustainable microalgal biorefinery targeting different microalgal products","authors":"Kanchan Samadhiya ,&nbsp;Atreyee Ghosh ,&nbsp;Kiran Bala","doi":"10.1016/j.algal.2023.103246","DOIUrl":"https://doi.org/10.1016/j.algal.2023.103246","url":null,"abstract":"<div><p><span>The present study aims to establish a sustainable bio refinery production in a semi-outdoor environment using two different types of media; fertilizer-based medium (FBM) and wastewater based medium (WWBM). A comparative study was performed under laboratory conditions to evaluate the effects of these media on a smaller scale. Cultivation was further scaled up to 500 L volume using WWBM resulting in four folds more biomass accumulation, 1.3 folds more carbohydrate accumulation, and 1.2 folds more lipids compared to cultivation under laboratory conditions. In this study, the species </span><span><em>Ettlia</em><em> texensis</em></span> was used. It was isolated from the nearby regions of Indore. Being indigenous, <em>Ettlia texensis</em><span> easily adapted to Indore's climatic conditions and produced important precursors without compromising biomass. With the supplementation of WWBM at 500 L cultivation volume, </span><em>E. texensis</em> was able to produce 493.4 ± 34.4 μg of lipid per mg of biomass, which was 1.5 folds higher than at the laboratory scale. This study facilitates successful up-scaling of the process by providing insight into the utilization of low-cost media for microalgal production. The semi-outdoor cultivation of <em>E. texensis</em> to produce precursors of various compounds is used in this study for the first time.</p></div>","PeriodicalId":7855,"journal":{"name":"Algal Research-Biomass Biofuels and Bioproducts","volume":"75 ","pages":"Article 103246"},"PeriodicalIF":5.1,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49779551","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}

{"title":"Red seaweed proteins: Valuable marine-origin compounds with encouraging applications","authors":"Camila Jiménez-González ,&nbsp;Ana María Torrado Agrasar ,&nbsp;Federico Mallo ,&nbsp;María Luisa Rúa ,&nbsp;Clara Fuciños","doi":"10.1016/j.algal.2023.103262","DOIUrl":"https://doi.org/10.1016/j.algal.2023.103262","url":null,"abstract":"<div><p>Increased incomes, urbanization, and an aging population, are leading to changes in consumption patterns, resulting in a growing demand for proteins. From a sustainability perspective, there is a consensus that animal protein production has a disproportionately impact on the environment, particularly in intensive systems that require significant amounts of feed crops. Macroalgae have emerged as a promising feedstock for transitioning towards a blue bioeconomy. Red seaweed stands out as a particularly attractive action, as it can contain protein concentrations of up to 47 %, the highest among terrestrial plants and other algae divisions. These proteins offer a rich source of essential amino acids, making them excellent candidates for human food formulation. Nevertheless, compared to other major components such as carbohydrates, red macroalgae proteins remain underexploited. This review focuses on the potential of red algae as a protein source within an environmentally friendly biorefinery development strategy, primarily for food and biomedical applications. It also explores the strategies and limitations associated with protein extraction and purification, emphasizing the need for further in vivo and toxicological studies, particularly regarding the digestibility and bioavailability of red algal proteins.</p></div>","PeriodicalId":7855,"journal":{"name":"Algal Research-Biomass Biofuels and Bioproducts","volume":"75 ","pages":"Article 103262"},"PeriodicalIF":5.1,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49779555","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}