Anais da Academia Brasileira de Ciencias最新文献_第4页

Ichthyological research in the Sorocaba River basin, State of Sao Paulo, southeastern Brazil: trajectory of knowledge, advances, and future directions. 巴西东南部圣保罗州索罗卡巴河流域鱼类学研究：知识轨迹、进展和未来方向。

IF 1.2 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2026-09-18 eCollection Date: 2026-01-01 DOI: 10.1590/0001-3765202620241364

Welber S Smith, Marta S Stefani

{"title":"Ichthyological research in the Sorocaba River basin, State of Sao Paulo, southeastern Brazil: trajectory of knowledge, advances, and future directions.","authors":"Welber S Smith, Marta S Stefani","doi":"10.1590/0001-3765202620241364","DOIUrl":"10.1590/0001-3765202620241364","url":null,"abstract":"Ichthyological knowledge of the Sorocaba River basin dates to the 19th century, with initial surveys by Johann Natterer. These were followed by expeditions at the turn of the 20th century by researchers from the University of São Paulo's (USP) Zoology Museum, which resulted in the description of five new species. After a hiatus of nearly a century, research resumed in 1992. Here, we present a comprehensive review of 64 publications to assess the current state of knowledge on the basin's ichthyofauna. The most frequently studied topics were community ecology (34.4%), followed by species inventory (14%), population ecology (12.5%), and feeding ecology (7.8%). The reviewed articles documented 109 fish species, with the majority belonging to the order Characiformes and the family Aces-trorhamphidae. This total comprises 93 native and 16 non-native species. Despite a recent increase in publications, we identify critical knowledge gaps. We conclude that the basin has a well-known ichthyofauna, meaning that future efforts should prioritize research on diet, reproduction, and invasive species, while also incorporating emerging topics such as microplastic pollution and modern techniques, such as stable isotope analysis, to effectively guide conservation and management.","PeriodicalId":7776,"journal":{"name":"Anais da Academia Brasileira de Ciencias","volume":"98 suppl 2","pages":"e20241364"},"PeriodicalIF":1.2,"publicationDate":"2026-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149036091","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The influence of ancient human occupation on the floristic composition of archaeological sites in Serra de Carajás, Pará, Brazil. 古代人类活动对巴西par<e:1>塞拉（Carajás）考古遗址区系组成的影响。

IF 1.2 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2026-09-18 eCollection Date: 2026-01-01 DOI: 10.1590/0001-3765202620250265

Ronize DA S Santos, Ana Luisa K M Albernaz, Márlia Coelho-Ferreira, Pedro G C Lima, Marcos P Magalhães

{"title":"The influence of ancient human occupation on the floristic composition of archaeological sites in Serra de Carajás, Pará, Brazil.","authors":"Ronize DA S Santos, Ana Luisa K M Albernaz, Márlia Coelho-Ferreira, Pedro G C Lima, Marcos P Magalhães","doi":"10.1590/0001-3765202620250265","DOIUrl":"https://doi.org/10.1590/0001-3765202620250265","url":null,"abstract":"The high density of culturally relevant species is one example of the types of vegetation alterations that have been attributed to ancient human occupation and landscape management. This study aimed to evaluate the characteristics of the current vegetation at Serra de Carajás and identify possible effects of ancient human interventions. Were inventoried slope forest and capão forest plots in 14 areas around archaeological sites, and in 15 areas without material culture. Differences in floristic compositions were tested by analyses of one-way PERMANOVA, MDS, SIMPER methods, and a partial Mantel test used to separate the effects of human occupation, soils, and the distances between plots. The effects of human occupation on floristic composition were significant only for the slope forest sites. Among the species that contributed to the dissimilarities between plots near occupied sites and plots in areas without indication of occupation are: Aparisthmium cordatum, Matayba inelegans and Caraipa densifolia. Both the distance between plots and human occupation were significant in the variation of floristic composition for the slope forest sites. Our results suggest that past human impacts on the vegetation at Carajás were more intense on slopes, although they extended to varying degrees across the entire plateau.","PeriodicalId":7776,"journal":{"name":"Anais da Academia Brasileira de Ciencias","volume":"98 suppl 2","pages":"e20250265"},"PeriodicalIF":1.2,"publicationDate":"2026-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149036094","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Photocatalytic Efficiency of Cerium Dioxide Hollow Spheres Sensitized with Bimetallic Au-Pd Nanoparticles for Enhanced Hydrogen Evolution. 双金属Au-Pd纳米颗粒敏化二氧化铈空心球增强析氢的光催化效率

IF 1.2 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2026-09-18 eCollection Date: 2026-01-01 DOI: 10.1590/0001-3765202620260016

Renilma C Sousa, Giovanna Machado, Carla Verônica R DE Moura, Edmilson M DE Moura, Jean Cláudio S Costa

{"title":"Photocatalytic Efficiency of Cerium Dioxide Hollow Spheres Sensitized with Bimetallic Au-Pd Nanoparticles for Enhanced Hydrogen Evolution.","authors":"Renilma C Sousa, Giovanna Machado, Carla Verônica R DE Moura, Edmilson M DE Moura, Jean Cláudio S Costa","doi":"10.1590/0001-3765202620260016","DOIUrl":"https://doi.org/10.1590/0001-3765202620260016","url":null,"abstract":"CeO2 with a hollow sphere morphology and a surface sensitized with gold (Au) and palladium (Pd) nanoparticles (NPs) was investigated as a photocatalyst for solar-driven hydrogen (H2) production. Structural characterization by X-ray diffraction (XRD) and morphological analysis by scanning electron microscopy (SEM) confirmed the successful synthesis of the materials and revealed that no significant structural alterations occurred in the CeO2 support following the surface modification procedures. Raman spectroscopy revealed a shift in the characteristic vibrational band of CeO2 upon sensitization with metallic NPs, which was attributed to the generation of oxygen vacancies within the oxide lattice. The surface modification of the hollow CeO2 spheres with metal NPs, exhibiting an average particle size of 6.38 ± 0.08 nm, contributed to an enhanced absorption of visible light and a concomitant increase in photocatalytic H2 evolution. The modified photocatalysts demonstrated improved performance due to both the tailored morphology of the support, achieving an activity of 19.9 μmol∙g-1∙h-1, and its sensitization with metallic NPs, which further elevated the H2 production rate to 45.4 μmol∙g-1∙h-1. These findings underscore the potential of combining morphological control with strategic chemical modification as an effective approach for the design of high-performance photocatalysts for solar H2 generation.","PeriodicalId":7776,"journal":{"name":"Anais da Academia Brasileira de Ciencias","volume":"98 4","pages":"e20260016"},"PeriodicalIF":1.2,"publicationDate":"2026-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149036053","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of the physical training of females of the F0 generation on the metabolism and memory of females/males of the F1 and F2 generations. F0代雌性体能训练对F1和F2代雌性/雄性代谢和记忆的影响

IF 1.2 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2026-09-14 eCollection Date: 2026-01-01 DOI: 10.1590/0001-3765202620241269

Tamiris S Fontoura, Marcella M Terra, Santiago T Paes, Vanessa O Furino, Paulo Cézar F Mathias, Vera Maria Peters, Martha O Guerra, Ana Eliza Andreazzi

{"title":"Effect of the physical training of females of the F0 generation on the metabolism and memory of females/males of the F1 and F2 generations.","authors":"Tamiris S Fontoura, Marcella M Terra, Santiago T Paes, Vanessa O Furino, Paulo Cézar F Mathias, Vera Maria Peters, Martha O Guerra, Ana Eliza Andreazzi","doi":"10.1590/0001-3765202620241269","DOIUrl":"https://doi.org/10.1590/0001-3765202620241269","url":null,"abstract":"Maternal lifestyle during critical developmental periods can influence metabolic and cognitive outcomes in subsequent generations. This study investigated whether exposure of F0 female rats to a high-sugar/high-fat diet induces metabolic alterations and memory impairments in the F1 and F2 generations, and whether pre-reproductive physical training could mitigate these effects. Female Wistar rats were assigned to control or hypercaloric diet groups, with or without treadmill training performed before mating. The training protocol consisted of progressive treadmill exercise beginning at 21 days of age and continuing until 120 days of age. Offspring from the F1 and F2 generations did not receive the hypercaloric diet or exercise intervention but were evaluated for adiposity, glycemia, and memory performance. Results demonstrated that maternal physical training exerted protective effects across generations, reducing adiposity and improving glucose metabolism in offspring. In contrast, maternal exposure to the hypercaloric diet was associated with adverse metabolic outcomes and impairments in long-term memory, particularly in the F2 generation. These findings suggest that maternal physical activity prior to reproduction may act as a protective, non-pharmacological strategy to counteract the transgenerational effects of an unhealthy diet.","PeriodicalId":7776,"journal":{"name":"Anais da Academia Brasileira de Ciencias","volume":"98 3","pages":"e20241269"},"PeriodicalIF":1.2,"publicationDate":"2026-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148987581","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ecotoxicological characterization of surface water, groundwater, and leachate from a sanitary landfill. 卫生填埋场地表水、地下水和渗滤液的生态毒理学特征。

IF 1.2 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2026-09-14 eCollection Date: 2026-01-01 DOI: 10.1590/0001-3765202620251049

Victória Alice D Dias, Arthur A Ochiutto, Thainá M Nehme, João Vítor B Calvelli, Antonio R DA Cunha Neto, Erika S Silva, Raquel S Jacob, Lucilaine V S Santos, Breno R Santos, Sandro Barbosa

{"title":"Ecotoxicological characterization of surface water, groundwater, and leachate from a sanitary landfill.","authors":"Victória Alice D Dias, Arthur A Ochiutto, Thainá M Nehme, João Vítor B Calvelli, Antonio R DA Cunha Neto, Erika S Silva, Raquel S Jacob, Lucilaine V S Santos, Breno R Santos, Sandro Barbosa","doi":"10.1590/0001-3765202620251049","DOIUrl":"https://doi.org/10.1590/0001-3765202620251049","url":null,"abstract":"Improper disposal of such waste represents a serious threat to the environment due to its potential to contaminate soil, rivers, and oceans, thereby endangering biota and public health. This study aimed to evaluate the ecotoxicological effects of raw and treated leachate, as well as surface water and groundwater adjacent to a Class II landfill, on germination and early growth parameters of Allium cepa L. and the viability or survival of Aliivibrio fischeri. The tested sample concentrations were 25, 50, 75, and 100%, each diluted in distilled water. In the phytotoxicity assays, A. cepa seeds were exposed to different sample concentrations, with distilled water serving as a negative control. The analyzed parameters included germination percentage, germination speed index, shoot length, root elongation, mitotic index, and chromosomal abnormalities. In the acute toxicity tests, the effect on bacterial luminescence was evaluated. Surface water and groundwater samples did not induce toxicity in A. cepa seeds, whereas raw and treated leachate samples inhibited germination and consequently negatively affected all other evaluated parameters. In A. fischeri assays, leachate samples exhibited toxicity, while surface water and groundwater samples induced a hormesis effect. The results from adjacent water samples demonstrate the landfill's efficiency in mitigating contamination of water bodies.","PeriodicalId":7776,"journal":{"name":"Anais da Academia Brasileira de Ciencias","volume":"98 3","pages":"e20251049"},"PeriodicalIF":1.2,"publicationDate":"2026-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148987640","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Aedes aegypti larvae mortality by Ilex paraguariensis fruit extracts depends on distinct geographical origins. 巴拉圭冬青果实提取物对埃及伊蚊幼虫的死亡率取决于不同的地理来源。

IF 1.2 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2026-09-14 eCollection Date: 2026-01-01 DOI: 10.1590/0001-3765202620251011

Alicele R Barbieri, Gilberto D Cozzer, Manuelle O P DE Almeida, Paulo Alfonso Floss, José Vladimir DE Oliveira, Cássia A Lima-Rezende, Renan DE Souza Rezende, Jacir Dal Magro, Daniel Albeny-Simões

{"title":"Aedes aegypti larvae mortality by Ilex paraguariensis fruit extracts depends on distinct geographical origins.","authors":"Alicele R Barbieri, Gilberto D Cozzer, Manuelle O P DE Almeida, Paulo Alfonso Floss, José Vladimir DE Oliveira, Cássia A Lima-Rezende, Renan DE Souza Rezende, Jacir Dal Magro, Daniel Albeny-Simões","doi":"10.1590/0001-3765202620251011","DOIUrl":"https://doi.org/10.1590/0001-3765202620251011","url":null,"abstract":"Aedes aegypti is vector of many viral diseases. Mosquito control has relied on synthetic insecticides, with growing demand for alternative methods. Our aim was to evaluate the Ae. aegypti larvae mortality by Ilex paraguariensis fruit extracts from different population origins and to identify the chemical compounds with larvicidal activity. Ae. aegypti larvae were exposed by 24h, 48h, and 72h to concentrations of 150, 300, 600, 1000, 2000 ppm of fruit extract, individually repeated for population origin. All fruit extracts showed larvicidal effect, greater and directly proportional to the exposure time and concentration. Effects possibly addressed to the anti-bactericidal and larvicidal activity of the identified chemical compounds. Population origin influenced larval mortality, especially increased in populations \"B\" (71.85% - 72h exposure) and \"E\" (100% - 72h exposure), which was related to the compounds found. The compounds with most efficient larval mortality were associated with folic acid (by blocking DNA production) and linoleic acid (high larvicidal effect). I. paraguariensis fruit extracts from plants originally from populations with greater genetic distance showed greater difference in their larvicidal potential. This result indicates greater influence of the genetic content over the fruits chemical composition, once all plants were grown under the same environmental conditions.","PeriodicalId":7776,"journal":{"name":"Anais da Academia Brasileira de Ciencias","volume":"98 3","pages":"e20251011"},"PeriodicalIF":1.2,"publicationDate":"2026-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148987651","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Auto Regulated Recursive Non-Quadratic Algorithm. 自动调节递归非二次算法。

IF 1.2 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2026-09-14 eCollection Date: 2026-01-01 DOI: 10.1590/0001-3765202620250449

Jonas J Barros, Allan K Barros, Marcus Vinicius Lopes, Marta O Barreiros, Cristiane DA Silva, Luis Claudio O Silva

{"title":"Auto Regulated Recursive Non-Quadratic Algorithm.","authors":"Jonas J Barros, Allan K Barros, Marcus Vinicius Lopes, Marta O Barreiros, Cristiane DA Silva, Luis Claudio O Silva","doi":"10.1590/0001-3765202620250449","DOIUrl":"https://doi.org/10.1590/0001-3765202620250449","url":null,"abstract":"The problem of non-stationary signals constitutes one of the most serious challenges in the context of adaptive filters, since it simultaneously demands high convergence speed, good tracking capability, and stability. However, several algorithms are developed based mainly on second-order statistics in strongly non-stationary scenarios or those subject to non-Gaussian perturbations. The temporal variability of the signal's statistical properties imposes the need for statistical detection and monitoring mechanisms for abrupt variations in the input signal, increasing the computational complexity of the algorithms. In this context, unlike basic adaptive filtering methods and approaches such as the Kalman filter algorithm, which presuppose second-order statistics, we present the Self-Regulated Non-Quadratic Recursive (RNQA) algorithm, using as a performance surface a sum of weighted even-power error functions and the dynamic adjustment of the correlation matrix normalized by the square of the error, which acts as a mechanism for continuous adaptation of the matrix, capable of responding effectively in non-stationary environments. In a system identification configuration, RNQA showed superior convergence to classical adaptive algorithms such as RNQ and the recursive Kalman filter.","PeriodicalId":7776,"journal":{"name":"Anais da Academia Brasileira de Ciencias","volume":"98 3","pages":"e20250449"},"PeriodicalIF":1.2,"publicationDate":"2026-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148987565","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Plants, algae and lichens communities of Hope Bay, Antarctic Peninsula: floristic inventory and seabirds' influence. 南极半岛希望湾的植物、藻类和地衣群落：植物区系清查和海鸟的影响。

IF 1.2 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2026-09-14 eCollection Date: 2026-01-01 DOI: 10.1590/0001-3765202620250611

Lucas M Poeiras, Antonio B Pereira, Thiago T C Pereira, Jair Putzke, Adriano A Spielmann, Roberto F M Michel, Carlos E G R Schaefer

{"title":"Plants, algae and lichens communities of Hope Bay, Antarctic Peninsula: floristic inventory and seabirds' influence.","authors":"Lucas M Poeiras, Antonio B Pereira, Thiago T C Pereira, Jair Putzke, Adriano A Spielmann, Roberto F M Michel, Carlos E G R Schaefer","doi":"10.1590/0001-3765202620250611","DOIUrl":"https://doi.org/10.1590/0001-3765202620250611","url":null,"abstract":"The study aimed to describe and map the different plant communities that occur in Hope Bay (HB), Antarctic Peninsula. Floristic description was based on mosses, lichens and terrestrial algae species, forming a mosaic of cryptogamic plant communities. A vegetation map was developed based on images taken by the QuickBird sensor. Field campaigns were performed visiting 15 points previously selected in the image. All communities were georeferenced, and floristic work was done. The green alga Prasiola crispa forms the most widespread plant community in HB, closely associated with ornithogenic soils. All other plant communities are more restricted. A mixed Prasiola crispa/Caloplaca spp./Acarospora macrocyclos (lichens) community is distributed around abandoned Pygoscelis adeliae nesting areas. The high availability of P and N, and the tolerance to acid pH benefit the distribution of these species closer to penguin rookeries, from where it gets rich leachates. The dynamics of seabird populations seem to be the main driver of plant communities' development in ice-free areas of HB. Deschampsia antarctica (the Antarctic grass) and Colobanthus quitensis (pearlwort), widely distributed in Maritime Antarctica, are absent in the Hope Bay, representing a semiarid transitional area between humid and polar desert climatic regions.","PeriodicalId":7776,"journal":{"name":"Anais da Academia Brasileira de Ciencias","volume":"98 3","pages":"e20250611"},"PeriodicalIF":1.2,"publicationDate":"2026-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148987563","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Selection and uses of species in urban afforestation in Maranhão, Northeast Brazil: an ethnobotanical approach. 巴西东北部maranh<e:1>城市造林中物种的选择和利用：民族植物学方法。

IF 1.2 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2026-09-14 eCollection Date: 2026-01-01 DOI: 10.1590/0001-3765202620250157

Idaiany S Costa, Hellen Maila M Pereira, José Ribamar DE Sousa Júnior, Julio M Monteiro

{"title":"Selection and uses of species in urban afforestation in Maranhão, Northeast Brazil: an ethnobotanical approach.","authors":"Idaiany S Costa, Hellen Maila M Pereira, José Ribamar DE Sousa Júnior, Julio M Monteiro","doi":"10.1590/0001-3765202620250157","DOIUrl":"https://doi.org/10.1590/0001-3765202620250157","url":null,"abstract":"This study aimed to assess the diversity and composition of species that make up urban forestry and the factors that determine the choice and maintenance of plants by residents of São Francisco do Maranhão. Interviews were conducted in homes or commercial establishments that had trees in front of them, and the species were classified into categories of use. A total of 317 trees from 16 families and 32 species were analyzed; the most abundant individuals were Azadirachta indica A. Juss. and Terminalia catappa L. When comparing exotic and native individuals, significant differences were identified between them. 201 interviews were conducted, and according to the results, exotic plants filled the utility gaps of native species in almost all categories, except medicinal ones. It was possible to verify the importance of exotic species locally, especially Azadirachta indica A.Juss., due to their uses. This species stood out in the community due to the number of individuals found in urban forestry and because it is considered a versatile tree, because in addition to its strong use for shading, it is used in ornamentation and in the treatment of some diseases.","PeriodicalId":7776,"journal":{"name":"Anais da Academia Brasileira de Ciencias","volume":"98 3","pages":"e20250157"},"PeriodicalIF":1.2,"publicationDate":"2026-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148987586","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Comprehensive Chemical Profile and Anti-Infective Properties of Cymbopogon schoenanthus L.: Phytochemical Analysis, In Silico Investigations, and Evaluation of Anti-SARS-CoV-2, Antimicrobial, and Antibiofilm Activities. Cymbopogon schoenanthus L.的综合化学特征和抗感染特性：植物化学分析、硅研究和抗sars - cov -2、抗菌和抗生物膜活性评价。

IF 1.2 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2026-09-07 eCollection Date: 2026-01-01 DOI: 10.1590/0001-3765202620260092

Hamdoon A Mohammed, Mona M H Soliman, Shimaa Moawad, Riaz A Khan, Suliman A Almahmoud, Ayman M Mousa, Ghassan M Sulaiman, Mohammed M Alharbi, Fatma A Elshibani, Amr Farouk

{"title":"Comprehensive Chemical Profile and Anti-Infective Properties of Cymbopogon schoenanthus L.: Phytochemical Analysis, In Silico Investigations, and Evaluation of Anti-SARS-CoV-2, Antimicrobial, and Antibiofilm Activities.","authors":"Hamdoon A Mohammed, Mona M H Soliman, Shimaa Moawad, Riaz A Khan, Suliman A Almahmoud, Ayman M Mousa, Ghassan M Sulaiman, Mohammed M Alharbi, Fatma A Elshibani, Amr Farouk","doi":"10.1590/0001-3765202620260092","DOIUrl":"https://doi.org/10.1590/0001-3765202620260092","url":null,"abstract":"Current work investigates the phytochemical components and the antioxidant, antimicrobial, antibiofilm, and anti-SARS-CoV-2 effects of Cymbopogon schoenanthus essential oil using both in vitro and in silico methods. Gas chromatography-mass spectrometry analysis identified 23 volatile constituents, with piperitone (32.62%), elemol (25.27%), and β-eudesmol (15.22%) as the predominant ones. The oil exhibited significant antioxidant activity using DPPH and ABTS assays, with IC50 values of 99.20 and 89.01 µg/mL, respectively. Antimicrobial evaluations against MRSA, Shigella sonnei, Cryptococcus neoformans, and Aspergillus fumigatus revealed marked effects, with minimum inhibitory concentrations (MICs) ranging from 0.3 to 2.5 µg/mL and inhibition zone diameters (IZDs) ranging from 30±0.6 to 10±0.6 mm. The oil demonstrated a strong, dose-dependent antibiofilm effect against methicillin-resistant Staphylococcus aureus (MRSA), achieving 78% inhibition at 10 µg/mL. The essential oil demonstrated a marked antiviral effect against severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2), with a selectivity index (18.6) superior to that of remdesivir (15.11). Molecular docking revealed strong binding affinities of major constituents to key enzymatic targets, including SARS-CoV-2's receptor-binding domain, and bacterial PBP2a and Gyrase B, with sesquiterpenes showing higher binding energies than monoterpenes. These results scientifically validated the traditional uses of C. schoenanthus and highlighted its potential as a source of natural anti-infective agent.","PeriodicalId":7776,"journal":{"name":"Anais da Academia Brasileira de Ciencias","volume":"98 suppl 1","pages":"e20260092"},"PeriodicalIF":1.2,"publicationDate":"2026-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148918230","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0