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Revista De Microbiologia最新文献

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Aeromonas species isolated from PINTADO fish (Pseudoplatystoma sp): virulence factors and drug susceptibility PINTADO鱼气单胞菌分离种:毒力因素及药敏
Revista De Microbiologia Pub Date : 1998-09-01 DOI: 10.1590/S0001-37141998000300015
Vera Lúcia Mores Rall, S. T. Iaria, Sandra Heidtmann, Fabiana Cristina Pimenta, R. Gamba, Débora Midori Myaki Pedroso
{"title":"Aeromonas species isolated from PINTADO fish (Pseudoplatystoma sp): virulence factors and drug susceptibility","authors":"Vera Lúcia Mores Rall, S. T. Iaria, Sandra Heidtmann, Fabiana Cristina Pimenta, R. Gamba, Débora Midori Myaki Pedroso","doi":"10.1590/S0001-37141998000300015","DOIUrl":"https://doi.org/10.1590/S0001-37141998000300015","url":null,"abstract":"Bacterias do genero Aeromonas tem sido descritas como patogenos emergentes de importância crescente em alimentos. Neste estudo, relatamos que 48% das amostras de peixe \"Pintado\" coletado no comercio de Sao Paulo, foram positivas para Aeromonas sp quando isoladas pelo metodo de plaqueamento direto. Quando o metodo Presenca/Ausencia foi utilizado, a porcentagem de positividade foi de 42%. A. caviae foi a especie mais frequente, seguida por A. hydrophila e A. sobria. Producao de enterotoxina citotoxica, determinada em camundongos recem-nascidos, foi observada em 67% das cepas de A. sobria, em 60% das de A. hydrophila e em 40% das de A. caviae. No teste in vitro em celulas HEp- 88% das cepas de A. hydrophila, 27% das cepas de A. sobria e 13% das cepas de A. caviae revelaram-se positivas. Com relacao a producao de enterotoxina citotonica, testada apos o aquecimento do sobrenadante a 56oC por 20 minutos, 17% das cepas de A. sobria, 10% das de A. caviae e nenhuma das de A. hydrophila foram positivas in vivo e para todas as cepas analisadas, os testes foram negativos em cultura de celula HEp-2. Quanto a capacidade de adesao, 20% das 5 cepas de A. sobria e 16% das 20 cepas de A. caviae aderiram a celulas HEp-2. A capacidade de invasao em celulas HEp-2 nao foi detectada em nenhuma das cepas testadas. As cepas isoladas foram sensiveis a maior parte dos antimicrobianos testados.","PeriodicalId":21211,"journal":{"name":"Revista De Microbiologia","volume":"33 1","pages":"222-227"},"PeriodicalIF":0.0,"publicationDate":"1998-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87959965","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}
引用次数: 32
EVALUATION OF THE VIABILITY OF PLEUROTUS SPP. STRAINS AFTER LIQUID NITROGEN CRYOPRESERVATION 侧耳菌液氮冷冻后存活能力的评价
Revista De Microbiologia Pub Date : 1998-09-01 DOI: 10.1590/S0001-37141998000300009
I. Lara-Herrera, G. Mata, R. Gaitán-Hernández
{"title":"EVALUATION OF THE VIABILITY OF PLEUROTUS SPP. STRAINS AFTER LIQUID NITROGEN CRYOPRESERVATION","authors":"I. Lara-Herrera, G. Mata, R. Gaitán-Hernández","doi":"10.1590/S0001-37141998000300009","DOIUrl":"https://doi.org/10.1590/S0001-37141998000300009","url":null,"abstract":"Viability of 6 mushroom strains of the Pleurotus genus (2 from P. djamor var. djamor, 1 from P. ostreatus var. ostreatus, 2 from P. ostreatus var. columbinus and 1 from P. pulmonarius) after liquid nitrogen cryopreservation (-196o) was evaluated. The contact time for the mycelia of these strains with the cryoprotectant (glycerol) was studied 1, 2 and 3 hours before freezing. We also tested the effect of different times (5, 10 and 15 minutes) and temperatures (30, 45 and 60oC) of the thawing system for mycelial recovery. The results showed a marked tendency toward faster mycelial recovery when samples were thawed at 30oC, while at 60oC no recovery was observed. A change in thawing and contact times with the cryoprotectant did not affect the results significantly, as the thawing temperature and strain employed affected.","PeriodicalId":21211,"journal":{"name":"Revista De Microbiologia","volume":"44 1","pages":"193-196"},"PeriodicalIF":0.0,"publicationDate":"1998-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85926019","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}
引用次数: 9
FRUITY AROMA PRODUCTION BY Ceratocystis fimbriata IN SOLID CULTURES FROM AGRO-INDUSTRIAL WASTES 毛角鼻虫在工农业废弃物固体培养物中产生水果香气
Revista De Microbiologia Pub Date : 1998-09-01 DOI: 10.1590/S0001-37141998000300012
A. Bramorski, C. R. Soccol, P. Christen, S. Revah
{"title":"FRUITY AROMA PRODUCTION BY Ceratocystis fimbriata IN SOLID CULTURES FROM AGRO-INDUSTRIAL WASTES","authors":"A. Bramorski, C. R. Soccol, P. Christen, S. Revah","doi":"10.1590/S0001-37141998000300012","DOIUrl":"https://doi.org/10.1590/S0001-37141998000300012","url":null,"abstract":"Solid state fermentations were carried out to test the efficacy of Ceratocystis fimbriata to grow on different agro-industrial substrates and aroma production. Seven media were prepared using cassava bagasse, apple pomace, amaranth and soya bean. All the media supported fungal growth. While amaranth medium produced pineapple aroma, media containing cassava bagasse, apple pomace and soya bean produced a strong fruity aroma. The aroma production was growth dependent and the maximum aroma intensity was detected a few hours before or after the maximum respirometric activity. Sixteen compounds were separated by gas cromatography of the components present in the headspace and fifteen of them were identified as acid (1), alcohols (6), aldehyde (1), ketones (2) and esters (5).","PeriodicalId":21211,"journal":{"name":"Revista De Microbiologia","volume":"60 1","pages":"208-212"},"PeriodicalIF":0.0,"publicationDate":"1998-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84469573","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}
引用次数: 48
Growth of Pediococcus acidilactici on sugar cane blackstrap molasses 酸性胶球球菌在甘蔗黑带糖蜜上的生长
Revista De Microbiologia Pub Date : 1998-09-01 DOI: 10.1590/S0001-37141998000300011
E. Sant’Anna, R. C. Torres
{"title":"Growth of Pediococcus acidilactici on sugar cane blackstrap molasses","authors":"E. Sant’Anna, R. C. Torres","doi":"10.1590/S0001-37141998000300011","DOIUrl":"https://doi.org/10.1590/S0001-37141998000300011","url":null,"abstract":"Pediococcus acidilactici (IL01) has grown in MRS (Man, Rogosa and Sharpe) broth modified by substitution of glucose by 2.0% (MRS-2), 3.0% (MRS-3), 4.0% (MRS-4) and 5.0% (MRS-5) sugar cane blackstrap molasses. The highest acid production was obtained in MRS-5 broth maintained at a constant pH of 5.0. The highest biomass production was obtained when P. acidilactici was grown in MRS-5 broth at initial pH 6.5, while productivity was higher in MRS-2 broth (28.16%). When the MRS-2 broth was utilized at initial pH 6.5 for a 20-hour fermentation period, the highest growth rate (dx/dt) was found in a period of 8 to 16 hours (0.290 g cells/L.h), while the specific growth rate (µ) was 0.175 (h-1) for that period, differently from the 0.441 (h-1) obtained for the period comprising the 4th to the 12th hour. The growth in MRS broth was 5.08% (2.95 g/l) higher than in MRS-2 broth (2.80 g/l). The data obtained have shown that P. acidilactici has had a significant growth in molasses as the main carbon source, and that it is possible to substitute MRS glucose by this carbon source with the purpose of obtaining a more economical growth medium for the potential large scale productions.","PeriodicalId":21211,"journal":{"name":"Revista De Microbiologia","volume":"26 1","pages":"202-207"},"PeriodicalIF":0.0,"publicationDate":"1998-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82689073","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}
引用次数: 9
Ribonuclease Production by Aspergillus species 曲霉种产生核糖核酸酶
Revista De Microbiologia Pub Date : 1998-07-01 DOI: 10.1590/S0001-37141998000300008
E. Gomes, R. Silva, A. Serzedello
{"title":"Ribonuclease Production by Aspergillus species","authors":"E. Gomes, R. Silva, A. Serzedello","doi":"10.1590/S0001-37141998000300008","DOIUrl":"https://doi.org/10.1590/S0001-37141998000300008","url":null,"abstract":"Univ Estadual Paulista, Inst Biociencias Letras & Ciencias Exatas, Lab Bioquim Proc & Microbiol Aplicada, BR-15054000 Sao Jose Dos Campos, Brazil","PeriodicalId":21211,"journal":{"name":"Revista De Microbiologia","volume":"46 1","pages":"187-192"},"PeriodicalIF":0.0,"publicationDate":"1998-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84645438","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}
引用次数: 8
Cell envelope components of Yersinia pestis grown in intraperitoneal diffusion chambers 腹膜扩散室培养鼠疫耶尔森菌的细胞包膜成分
Revista De Microbiologia Pub Date : 1998-01-01 DOI: 10.1590/S0001-37141998000300005
R. C. Ferreira, A. O. A. Neto, S. Fracalanzza, S. Costa, D. F. Almeida, L. Ferreira
{"title":"Cell envelope components of Yersinia pestis grown in intraperitoneal diffusion chambers","authors":"R. C. Ferreira, A. O. A. Neto, S. Fracalanzza, S. Costa, D. F. Almeida, L. Ferreira","doi":"10.1590/S0001-37141998000300005","DOIUrl":"https://doi.org/10.1590/S0001-37141998000300005","url":null,"abstract":"The electrophoretic profiles of penicillin binding proteins (PBPs) and outer membrane proteins (OMPs) of Yersinia pestis EV 76 were determined following in vivo growth in diffusion chambers implanted in the peritoneal cavity of mice. In contrast to Y. pestis grown under in vitro conditions which activate the low calcium response (LCR) regulon there was no significant qualitative or quantitative change of the PBP profile of Y. pestis cells during growth in diffusion chambers for up to 72 h following implantation in mice. Three OMPs, with molecular weight of 100, 60 and 58 kDa, were expressed in Y. pestis cells grown for 24 h, but not at 48 h or at 72 h, in diffusion chambers. These results indicate that growth of Y. pestis in intraperitoneal diffusion chambers activates genes which might be relevant to the growth in the mammal host.","PeriodicalId":21211,"journal":{"name":"Revista De Microbiologia","volume":"96 1","pages":"174-178"},"PeriodicalIF":0.0,"publicationDate":"1998-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73432611","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}
引用次数: 1
MORPHOLOGICAL, CYTOLOGICAL, AND CULTURAL ASPECTS OF CURVULARIA PALLESCENS 曲霉的形态、细胞学和文化方面
Revista De Microbiologia Pub Date : 1998-01-01 DOI: 10.1590/S0001-37141998000300010
S. Freire, L. M. Paiva, E. A. L. Lima, L. Maia
{"title":"MORPHOLOGICAL, CYTOLOGICAL, AND CULTURAL ASPECTS OF CURVULARIA PALLESCENS","authors":"S. Freire, L. M. Paiva, E. A. L. Lima, L. Maia","doi":"10.1590/S0001-37141998000300010","DOIUrl":"https://doi.org/10.1590/S0001-37141998000300010","url":null,"abstract":"Curvularia pallescens Boedijn (Hyphomycetes) is redescribed with the aid of a scanning electron microscope, and the optimal cultural conditions for growing this fungus are discussed. Cytological analysis and nuclear condition, observed through the HCl-Giemsa technique, showed vegetative and reproductive structures (hypha and conidia) formed by uni, bi, tri, and multinucleated segments. Cultures of C. pallescens in Complete medium and in Potato dextrose agar varied on growth, on aspects of the border of the colonies and also on medium pigmentation. The Complete medium and the temperature between 25-28°C were the most indicated for growth of C. pallescens.","PeriodicalId":21211,"journal":{"name":"Revista De Microbiologia","volume":"2004 1","pages":"197-201"},"PeriodicalIF":0.0,"publicationDate":"1998-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82568911","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}
引用次数: 12
Producao de enterotoxinas por linhagens de staphylococcus aureus rosenbach, 1984, isoladas de fossas nasais e de algumas amostras clinicas 从鼻腔和一些临床样本中分离的rosenbach金黄色葡萄球菌菌株产生肠毒素
Revista De Microbiologia Pub Date : 1991-01-01 DOI: 10.11606/d.11.2018.tde-20181127-161433
P. C. Vertoni, R. Camargo
{"title":"Producao de enterotoxinas por linhagens de staphylococcus aureus rosenbach, 1984, isoladas de fossas nasais e de algumas amostras clinicas","authors":"P. C. Vertoni, R. Camargo","doi":"10.11606/d.11.2018.tde-20181127-161433","DOIUrl":"https://doi.org/10.11606/d.11.2018.tde-20181127-161433","url":null,"abstract":"","PeriodicalId":21211,"journal":{"name":"Revista De Microbiologia","volume":"91 1","pages":"172"},"PeriodicalIF":0.0,"publicationDate":"1991-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77627591","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}
引用次数: 0
Efeito do tratamento acido da levedura saccharomyces cerevisiae na fermentacao alcoolica 酵母酸处理对酒精发酵的影响
Revista De Microbiologia Pub Date : 1988-11-29 DOI: 10.11606/D.11.2019.TDE-20191218-110710
E. Gomes, H. Amorim
{"title":"Efeito do tratamento acido da levedura saccharomyces cerevisiae na fermentacao alcoolica","authors":"E. Gomes, H. Amorim","doi":"10.11606/D.11.2019.TDE-20191218-110710","DOIUrl":"https://doi.org/10.11606/D.11.2019.TDE-20191218-110710","url":null,"abstract":"","PeriodicalId":21211,"journal":{"name":"Revista De Microbiologia","volume":"53 1","pages":"31"},"PeriodicalIF":0.0,"publicationDate":"1988-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72820007","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}
引用次数: 2
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