Karina Suelen Santana Reis, C. Braga, Thuareag Monteiro Trindade dos Santos
A predação regula o funcionamento das comunidades e afeta a dinâmica populacional dos organismos no ambiente. Os principais predadores aquáticos estão representados pelos invertebrados da classe Insecta, que se alimentam de organismos vertebrados e/ou invertebrados. Dentre os vertebrados, os girinos são os mais consumidos. Este experimento estudou a atividade predatória dos insetos aquáticos (Odonata: Libellulidae e Coleóptera: Hydrophilidae) sobre girinos de Rhinella sp. e Physalaemus sp. na cidade de Capitão Poço, Pará, Brasil. O experimento contou com seis tratamentos realizados em duas fases (dia e noite). Foram observadas diferenças significativas somente entre os tratamentos 1 (controle) e 2 (Libellulidae) (F= 7,21; p= 0,00). A atividade predatória dos insetos foi realizada em ambas as fases, não havendo diferenças significativas (F= 1,33; p= 0,26). O sucesso da família Libellulidae está relacionado as estratégias e aspectos morfológicos que suas larvas utilizam no ato de predação. Diferentemente, a família Hydrophilidae, possui características que podem ter colaborado na baixa atividade predatória observada.
{"title":"Atividade Predatória de Insetos Aquáticos (Odonata: Libellulidae e Coleóptera: Hydrophilidae) em Condições Laboratoriais","authors":"Karina Suelen Santana Reis, C. Braga, Thuareag Monteiro Trindade dos Santos","doi":"10.22571/2526-4338627","DOIUrl":"https://doi.org/10.22571/2526-4338627","url":null,"abstract":"A predação regula o funcionamento das comunidades e afeta a dinâmica populacional dos organismos no ambiente. Os principais predadores aquáticos estão representados pelos invertebrados da classe Insecta, que se alimentam de organismos vertebrados e/ou invertebrados. Dentre os vertebrados, os girinos são os mais consumidos. Este experimento estudou a atividade predatória dos insetos aquáticos (Odonata: Libellulidae e Coleóptera: Hydrophilidae) sobre girinos de Rhinella sp. e Physalaemus sp. na cidade de Capitão Poço, Pará, Brasil. O experimento contou com seis tratamentos realizados em duas fases (dia e noite). Foram observadas diferenças significativas somente entre os tratamentos 1 (controle) e 2 (Libellulidae) (F= 7,21; p= 0,00). A atividade predatória dos insetos foi realizada em ambas as fases, não havendo diferenças significativas (F= 1,33; p= 0,26). O sucesso da família Libellulidae está relacionado as estratégias e aspectos morfológicos que suas larvas utilizam no ato de predação. Diferentemente, a família Hydrophilidae, possui características que podem ter colaborado na baixa atividade predatória observada.","PeriodicalId":41699,"journal":{"name":"Acta Brasiliensis","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2023-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42576846","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The occurrence of Pionus maximiliani (Kuhl, 1820) in the state of Pernambuco is characterized by few documented reports and little ecological information. Therefore, the aim of this study is to describe new records of the species and provide information about its frugivorous diet and foraging behavior (consumption of pulp and seeds). The observations were carried out in the municipality of Olinda. During the months of November and December 2020 and January 2021 (38 events) The birds were monitored during foraging activity on the fruits of five tree species, including Mangifera indica L. and Psidium guajava L. These observations contribute to a better understanding of the occurrence and feeding ecology of the Scaly-headed Parrot in the state of Pernambuco.
{"title":"New records and frugivory diet of the Pionus maximiliani (Aves: Psittacidae) for Pernambuco, Brazil","authors":"Leonardo Barbosa da Silva","doi":"10.22571/2526-4338616","DOIUrl":"https://doi.org/10.22571/2526-4338616","url":null,"abstract":"The occurrence of Pionus maximiliani (Kuhl, 1820) in the state of Pernambuco is characterized by few documented reports and little ecological information. Therefore, the aim of this study is to describe new records of the species and provide information about its frugivorous diet and foraging behavior (consumption of pulp and seeds). The observations were carried out in the municipality of Olinda. During the months of November and December 2020 and January 2021 (38 events) The birds were monitored during foraging activity on the fruits of five tree species, including Mangifera indica L. and Psidium guajava L. These observations contribute to a better understanding of the occurrence and feeding ecology of the Scaly-headed Parrot in the state of Pernambuco.","PeriodicalId":41699,"journal":{"name":"Acta Brasiliensis","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2023-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43823444","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
T. M. Barbosa, J. T. Jales, J. R. Medeiros, R. Gama
Sarcosaprophagous flies may show temporal variations in terms of their location and colonization in ephemeral resources, in addition to their richness and abundance changing according to the substrate age. The present study examined the influence of decomposition time on the: (i) composition of the sarcosaprophagous dipterofauna; (ii) sexual proportion of the collected specimens; and (iii) the stage of sexual maturity of female flies (Calliphoridae and Sarcophagidae). For this, we used chicken liver with different decomposition times (0h, 24h, 48h, and 76h) for the collection of adult flies. The results showed that: i) the assemblages were most diverse and abundant in more decomposed baits; ii) Calliphoridae was the most abundant taxa in all treatments; iii) the reproductive stage varied according to the age of the substrate, with high rates of mature or pregnant females in the older substrates; and iv) the number of males blowflies was higher in older baits, but it did not vary for flesh flies. Thus, this work demonstrates experimentally that the substrate age is an influencing factor in the composition of sarcosaprophagous flies’ assemblage, and it indication of the dipterans potential as primary or secondary colonizers throughout colonization of ephemeral resources.
{"title":"Sarcosaprophagous dipterans associated with differentially-decomposed substrates in Atlantic Forest environments","authors":"T. M. Barbosa, J. T. Jales, J. R. Medeiros, R. Gama","doi":"10.22571/2526-4338599","DOIUrl":"https://doi.org/10.22571/2526-4338599","url":null,"abstract":"Sarcosaprophagous flies may show temporal variations in terms of their location and colonization in ephemeral resources, in addition to their richness and abundance changing according to the substrate age. The present study examined the influence of decomposition time on the: (i) composition of the sarcosaprophagous dipterofauna; (ii) sexual proportion of the collected specimens; and (iii) the stage of sexual maturity of female flies (Calliphoridae and Sarcophagidae). For this, we used chicken liver with different decomposition times (0h, 24h, 48h, and 76h) for the collection of adult flies. The results showed that: i) the assemblages were most diverse and abundant in more decomposed baits; ii) Calliphoridae was the most abundant taxa in all treatments; iii) the reproductive stage varied according to the age of the substrate, with high rates of mature or pregnant females in the older substrates; and iv) the number of males blowflies was higher in older baits, but it did not vary for flesh flies. Thus, this work demonstrates experimentally that the substrate age is an influencing factor in the composition of sarcosaprophagous flies’ assemblage, and it indication of the dipterans potential as primary or secondary colonizers throughout colonization of ephemeral resources.","PeriodicalId":41699,"journal":{"name":"Acta Brasiliensis","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2023-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46602033","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Sphaerobolus stellatus Tode is a fascinating gasteroid fungus that is distinguished from other fungi by the diminutive morphology of the starry basidiome when mature and its peculiar strategy of spore’s dispersion. This taxon ejects the gleba for a considerable distance as if it was cannon, and therefore is popularly known as artillery fungus. Although the species is cosmopolitan, records are seldom in regions such as South America, and many of them require greater attention due to the absence of important morphological characters. In Brazil, the South American country with most records, the distribution was restricted to a few sites, none of them in the Amazon. This study describes the occurrence of S. stellatus from the Amazon, contributing to the understanding of its geographical distribution and making the material available for future diversity studies.
{"title":"First record of Sphaerobolus stellatus Tode (Basidiomycota, Geastraceae) from the Amazon, Brazil","authors":"Marcos Diones Ferreira Santana, S. Couceiro","doi":"10.22571/2526-4338617","DOIUrl":"https://doi.org/10.22571/2526-4338617","url":null,"abstract":"Sphaerobolus stellatus Tode is a fascinating gasteroid fungus that is distinguished from other fungi by the diminutive morphology of the starry basidiome when mature and its peculiar strategy of spore’s dispersion. This taxon ejects the gleba for a considerable distance as if it was cannon, and therefore is popularly known as artillery fungus. Although the species is cosmopolitan, records are seldom in regions such as South America, and many of them require greater attention due to the absence of important morphological characters. In Brazil, the South American country with most records, the distribution was restricted to a few sites, none of them in the Amazon. This study describes the occurrence of S. stellatus from the Amazon, contributing to the understanding of its geographical distribution and making the material available for future diversity studies.","PeriodicalId":41699,"journal":{"name":"Acta Brasiliensis","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2023-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68221762","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Solid waste dump site-based pollution is one of the colossal health concerns globally due to presence of cellulose, starch, protein, and lipids, which is a perfect nutrient waste for the development of biodegrading potential microbes. The current study aimed to determine the productive microorganisms for waste biodegradation. Ten samples were collected from different areas of Karachi waste dump sites. The identification and characterization of isolates were done by morphological and biochemical tests. The isolated microbes were qualitatively screened for the action of making industrially key bio-enzymes. The potential enzymes producing microbes were subjected to waste degradation test for 90 days. Changes of odor, color and weight loss of decomposing garbage were noted. The highest degradation ability in term of weight loss was shown by Aspergillus (SSI14) and Bacillus (SSI6). Four metals (zinc sulphate, cadmium chloride, copper sulphate and iron sulphate) were chosen for the purpose of metals tolerance test and minimum inhibitory concentration (MIC) of the isolated microbial strains. Current study reported that Zn was found to be more lethal in in comparison to Cu and Fe. Molecular identification of the isolated microbes was done by polymerase chain reaction. The microbial strains were characterized by the polymerase chain reaction (PCR) followed by confirmation of product by agarose gel electrophoresis. The findings can be served as baseline data to develop microbial apparatus for biodegradation and management of solid waste.
{"title":"Molecular and biochemical characterization of solid waste biodegrading microbes isolated from municipal waste dump site","authors":"N. Afshan, M. Ghouri, A. Hayat, S. G. Nadeem","doi":"10.22571/2526-4338629","DOIUrl":"https://doi.org/10.22571/2526-4338629","url":null,"abstract":"Solid waste dump site-based pollution is one of the colossal health concerns globally due to presence of cellulose, starch, protein, and lipids, which is a perfect nutrient waste for the development of biodegrading potential microbes. The current study aimed to determine the productive microorganisms for waste biodegradation. Ten samples were collected from different areas of Karachi waste dump sites. The identification and characterization of isolates were done by morphological and biochemical tests. The isolated microbes were qualitatively screened for the action of making industrially key bio-enzymes. The potential enzymes producing microbes were subjected to waste degradation test for 90 days. Changes of odor, color and weight loss of decomposing garbage were noted. The highest degradation ability in term of weight loss was shown by Aspergillus (SSI14) and Bacillus (SSI6). Four metals (zinc sulphate, cadmium chloride, copper sulphate and iron sulphate) were chosen for the purpose of metals tolerance test and minimum inhibitory concentration (MIC) of the isolated microbial strains. Current study reported that Zn was found to be more lethal in in comparison to Cu and Fe. Molecular identification of the isolated microbes was done by polymerase chain reaction. The microbial strains were characterized by the polymerase chain reaction (PCR) followed by confirmation of product by agarose gel electrophoresis. The findings can be served as baseline data to develop microbial apparatus for biodegradation and management of solid waste.","PeriodicalId":41699,"journal":{"name":"Acta Brasiliensis","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2023-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47477998","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ana Paula De Medeiros, Erich de Freitas Mariano, Marcelo Menezes Alves, Maria De Fátima De Araújo
Schinopsis brasiliensis Engl. (Anacardiaceae) is a woody medicinal plant interesting to research and conservation due to timber extraction, high pharmacological potential and cultural value in the Brazilian semi-arids. In this research, we modeled the potential distribution of the species in the Neotropical, identified the climate limiting factors of its distribution and measured the percentage of adequate protected areas. The model was generated in the Maxent software, through the combination of 469 registers of the species occurrence and nine climate variables from the WorldClim data base and presented good development (AUC = 0.976). The potentially adequate areas were estimated along the dry diagonal in South America, in addition to fragmented areas at the coast of Peru and Ecuador. Precipitation, temperature and atmospheric humidity were the most influential variables on the prediction of climatically viable areas for the species. The results indicate low representation of protected areas (0.003%) in highly adequate areas, which demonstrates the necessity of expansion, implementation of measures of conservation and management of S. brasiliensis. The findings in this study, therefore, can be used for scientific support on delineating these measurements.
{"title":"Climatic niche as a modeler of the distribution pattern of Schinopsis brasiliensis in the Neotropical","authors":"Ana Paula De Medeiros, Erich de Freitas Mariano, Marcelo Menezes Alves, Maria De Fátima De Araújo","doi":"10.22571/2526-4338605","DOIUrl":"https://doi.org/10.22571/2526-4338605","url":null,"abstract":"Schinopsis brasiliensis Engl. (Anacardiaceae) is a woody medicinal plant interesting to research and conservation due to timber extraction, high pharmacological potential and cultural value in the Brazilian semi-arids. In this research, we modeled the potential distribution of the species in the Neotropical, identified the climate limiting factors of its distribution and measured the percentage of adequate protected areas. The model was generated in the Maxent software, through the combination of 469 registers of the species occurrence and nine climate variables from the WorldClim data base and presented good development (AUC = 0.976). The potentially adequate areas were estimated along the dry diagonal in South America, in addition to fragmented areas at the coast of Peru and Ecuador. Precipitation, temperature and atmospheric humidity were the most influential variables on the prediction of climatically viable areas for the species. The results indicate low representation of protected areas (0.003%) in highly adequate areas, which demonstrates the necessity of expansion, implementation of measures of conservation and management of S. brasiliensis. The findings in this study, therefore, can be used for scientific support on delineating these measurements.","PeriodicalId":41699,"journal":{"name":"Acta Brasiliensis","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2023-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68222143","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Leirson Rodrigues Da Silva, Ana Rosa de Figueiredo, Maria Ivone Martins Jacintho Barbosa, Milena Maria Tomaz De Oliveira, F. Villa, L. A. S. De Morais
Ceylon gooseberry (Dovyalis hebecarpa Warb) is an important and valuable food source in the diet of several countries worldwide with a potential to positively impact nutritional security. This study aimed to evaluate the physicochemical attributes, bioactive compounds, and antioxidant capacity of D. hebecarpa fruits grown in Marechal Cândido Rondon/PR. The following parameters were assessed: fresh weight, longitudinal and transverse length, LD/TD (format index), yield in pulp, peel, and seed, soluble solids, titratable acidity, SS/TA (flavor index), pH, ascorbic acid, total carotenoids, yellow flavonoids, total anthocyanins, total chlorophyll, phenolic compounds, and antioxidant capacity (DPPH and FRAP). The review and results of study on ripe fruits of D. hebecarpa in Marechal Cândido Rondon/PR revealed that it contains significant levels of soluble solids (18.25 °Brix), good pulp yield (90.19%), and high levels of ascorbic acid (142.09 mg/100g-1 of pulp) and total anthocyanins (94.13 mg/100g-1 of peel). This information confirms that the fruits of D. hebecarpa can be successfully used for the formulation and development of new products, in addition to the utilization of other parts, such as peels and seeds.
{"title":"Physicochemical characterization and bioactive potential in Dovyalis hebecarpa Warb fruits","authors":"Leirson Rodrigues Da Silva, Ana Rosa de Figueiredo, Maria Ivone Martins Jacintho Barbosa, Milena Maria Tomaz De Oliveira, F. Villa, L. A. S. De Morais","doi":"10.22571/2526-4338577","DOIUrl":"https://doi.org/10.22571/2526-4338577","url":null,"abstract":"Ceylon gooseberry (Dovyalis hebecarpa Warb) is an important and valuable food source in the diet of several countries worldwide with a potential to positively impact nutritional security. This study aimed to evaluate the physicochemical attributes, bioactive compounds, and antioxidant capacity of D. hebecarpa fruits grown in Marechal Cândido Rondon/PR. The following parameters were assessed: fresh weight, longitudinal and transverse length, LD/TD (format index), yield in pulp, peel, and seed, soluble solids, titratable acidity, SS/TA (flavor index), pH, ascorbic acid, total carotenoids, yellow flavonoids, total anthocyanins, total chlorophyll, phenolic compounds, and antioxidant capacity (DPPH and FRAP). The review and results of study on ripe fruits of D. hebecarpa in Marechal Cândido Rondon/PR revealed that it contains significant levels of soluble solids (18.25 °Brix), good pulp yield (90.19%), and high levels of ascorbic acid (142.09 mg/100g-1 of pulp) and total anthocyanins (94.13 mg/100g-1 of peel). This information confirms that the fruits of D. hebecarpa can be successfully used for the formulation and development of new products, in addition to the utilization of other parts, such as peels and seeds.","PeriodicalId":41699,"journal":{"name":"Acta Brasiliensis","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43562600","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jessica Carneiro Souza, Bianca Souza Cana Verde, H. C. R. S. Brandão, D. Silva
The aim of this study was to determine concentrations of nitrogen (N) in two biomes, Atlantic Forest (AF) and Cerrado (CR), at the interface between terrestrial and aquatic ecosystems. This involved evaluating N in vegetation (litterfall), soil and water in small watersheds in environmental protection areas in northeastern Brazil. Soil chemical and physical analyzes were performed and mineralization and nitrification rates were determined. The forms of organic, inorganic and particulate nitrogen in water were determined by spectrophotometry. Two collections were carried out, one in the dry season (October and November 2019) and another in the rainy season (February and March 2020), in two environmental preservation areas, Estação Veracel Private Natural Heritage Reserve - (Atlantic Forest) and Chapada Diamantina National Park (Cerrado), with five small watersheds sampled in each biome. The N concentration in litterfall was similar in both biomes, with averages of 0.69%. In relation to soil and water, N concentrations were higher in AF compared to CR, with concentrations of 0.95 ± 0.40 and 0.59 ± 0.14 µg.Ng-1 of nitrate in the soils of AF and CR, respectively, and 3.53 ± 2.51 µM of nitrate in water in AF and 0.76 ± 0.78 µM in CR.
{"title":"Nitrogen dynamics in small watersheds in the Atlantic Forest and Cerrado in Northeastern Brazil","authors":"Jessica Carneiro Souza, Bianca Souza Cana Verde, H. C. R. S. Brandão, D. Silva","doi":"10.22571/2526-4338620","DOIUrl":"https://doi.org/10.22571/2526-4338620","url":null,"abstract":"The aim of this study was to determine concentrations of nitrogen (N) in two biomes, Atlantic Forest (AF) and Cerrado (CR), at the interface between terrestrial and aquatic ecosystems. This involved evaluating N in vegetation (litterfall), soil and water in small watersheds in environmental protection areas in northeastern Brazil. Soil chemical and physical analyzes were performed and mineralization and nitrification rates were determined. The forms of organic, inorganic and particulate nitrogen in water were determined by spectrophotometry. Two collections were carried out, one in the dry season (October and November 2019) and another in the rainy season (February and March 2020), in two environmental preservation areas, Estação Veracel Private Natural Heritage Reserve - (Atlantic Forest) and Chapada Diamantina National Park (Cerrado), with five small watersheds sampled in each biome. The N concentration in litterfall was similar in both biomes, with averages of 0.69%. In relation to soil and water, N concentrations were higher in AF compared to CR, with concentrations of 0.95 ± 0.40 and 0.59 ± 0.14 µg.Ng-1 of nitrate in the soils of AF and CR, respectively, and 3.53 ± 2.51 µM of nitrate in water in AF and 0.76 ± 0.78 µM in CR.","PeriodicalId":41699,"journal":{"name":"Acta Brasiliensis","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46831032","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Thiago Augusto Araujo Correia Lima, Leonardo Pinto Cunha, L. Melo, L. M. Oliveira, D. P. K. Queiroz, J. E. L. S. Ribeiro, M. Marques, M. P. Lima
Protium is the most frequent genus of Burseraceae in the Adolpho Ducke Forest Reserve (Manaus, Amazonas), which is where its species were previously identified and mapped and this has favored various studies of this central Amazon forest. A number of P. divaricatum Engl., P. opacum Swart and P. strumosum Daly trees were selected with the objective of providing information about their chemical and biological aspects. Resin exudation was stimulated with the use of ethephon and the essential oils from the aerial parts and the resin were evaluated using GC. The occurrence of galls was also registered. The hydrocarbon sesquiterpene ß-caryophyllene was detected in high percentages in the essential oils of leaves and twigs of P. divaricatum (52.75% and 14.74%) and P. opacum (39.55% and 17.86%), respectively. The predominant oxygenated sesquiterpenes were spathulenol in the leaves (19.52%) and twigs (31.29%) of P. divaricatum, in addition to khusimone (32.36%) in the twigs of P. opacum. Monoterpenes were identified in the essential oils of the P. strumosum resin, with p-cymene (58.97%) predominating in the naturally exuded resin, limonene (61.45%) and p-cimen-8-ol (53.92%) in the resin of the first and second extraction with ethephon, respectively. On the trees, galls were identified that will help in the identification of the three species.
{"title":"Essential oils, chemical stimulation of resin and occurrence of galls in three Amazonian species of Protium","authors":"Thiago Augusto Araujo Correia Lima, Leonardo Pinto Cunha, L. Melo, L. M. Oliveira, D. P. K. Queiroz, J. E. L. S. Ribeiro, M. Marques, M. P. Lima","doi":"10.22571/2526-4338593","DOIUrl":"https://doi.org/10.22571/2526-4338593","url":null,"abstract":"Protium is the most frequent genus of Burseraceae in the Adolpho Ducke Forest Reserve (Manaus, Amazonas), which is where its species were previously identified and mapped and this has favored various studies of this central Amazon forest. A number of P. divaricatum Engl., P. opacum Swart and P. strumosum Daly trees were selected with the objective of providing information about their chemical and biological aspects. Resin exudation was stimulated with the use of ethephon and the essential oils from the aerial parts and the resin were evaluated using GC. The occurrence of galls was also registered. The hydrocarbon sesquiterpene ß-caryophyllene was detected in high percentages in the essential oils of leaves and twigs of P. divaricatum (52.75% and 14.74%) and P. opacum (39.55% and 17.86%), respectively. The predominant oxygenated sesquiterpenes were spathulenol in the leaves (19.52%) and twigs (31.29%) of P. divaricatum, in addition to khusimone (32.36%) in the twigs of P. opacum. Monoterpenes were identified in the essential oils of the P. strumosum resin, with p-cymene (58.97%) predominating in the naturally exuded resin, limonene (61.45%) and p-cimen-8-ol (53.92%) in the resin of the first and second extraction with ethephon, respectively. On the trees, galls were identified that will help in the identification of the three species.","PeriodicalId":41699,"journal":{"name":"Acta Brasiliensis","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47867799","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Heavy metal pollution is an serious environmental problem because they have toxic effects on living organisms. In recent years, the use of microbial biosorbents to remove heavy metal pollution have studied. Many biological materials are used to remove copper ions. In this study, the biosorption capacity of lyophilized Pantoea agglomerans for Cu (II) ions were investigated under various conditions (initial pH, contact time, initial heavy metals ion concentration). The monocomponent biosorption data have been analyzed using isotherm (Freundlich and Langmuir) and kinetic models. The highest copper uptake capacity of the biomass was obtained at the initial copper concentration of 250 mgL-1 at pH 5.0 and contact time 90th minute. The equilibrium data correlated well with the Langmuir and Freundlich model. It was found that the pseudo-second-order kinetic model fitted the experimentally obtained data. Liyofilized P. agglomerans biomass appears to be an inexpensive and efficient biosorbent for the removal of Cu (II) from aqueous solutions.
{"title":"Biosorption of Copper (II) Ions From Aqueous Solution Onto Pantoea agglomerans Isolated From Water Containing High Amount Of Boron Element","authors":"M. Kıvanç, Fatma Günaydın Okus","doi":"10.22571/2526-4338619","DOIUrl":"https://doi.org/10.22571/2526-4338619","url":null,"abstract":"Heavy metal pollution is an serious environmental problem because they have toxic effects on living organisms. In recent years, the use of microbial biosorbents to remove heavy metal pollution have studied. Many biological materials are used to remove copper ions. In this study, the biosorption capacity of lyophilized Pantoea agglomerans for Cu (II) ions were investigated under various conditions (initial pH, contact time, initial heavy metals ion concentration). The monocomponent biosorption data have been analyzed using isotherm (Freundlich and Langmuir) and kinetic models. The highest copper uptake capacity of the biomass was obtained at the initial copper concentration of 250 mgL-1 at pH 5.0 and contact time 90th minute. The equilibrium data correlated well with the Langmuir and Freundlich model. It was found that the pseudo-second-order kinetic model fitted the experimentally obtained data. Liyofilized P. agglomerans biomass appears to be an inexpensive and efficient biosorbent for the removal of Cu (II) from aqueous solutions.","PeriodicalId":41699,"journal":{"name":"Acta Brasiliensis","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49331882","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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