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	Provedor de dados BJM (8) R. Bras. Zootec. (5) Scientia Agricola (2) Ciência e Agrotecnologia (2) PAB (1) Autor Schwan,Rosane Freitas (18) Ávila,Carla Luiza da Silva (6) Pinto,José Cardoso (5) Dias,Eustáquio Souza (4) Dias,Disney Ribeiro (3) Figueiredo,Henrique César Pereira (3) Magalhães-Guedes,Karina Teixeira (3) Silva,Cristina Ferreira (2) Silva,Romildo da (2) Valeriano,Alexandre Rocha (2) Viana,Roberta Oliveira (2) Abe,Carlos (1) Assis,Fábia Giovana do Val de (1) Azevedo,Raquel Santos (1) Batista,Luis Roberto (1) Braga Jr.,Roberto Alves (1) Braga Junior,Roberto Alves (1) Braga,Claudia (1) Bravo-Martins,Claudia Eugênia Castro (1) Campos,Cássia Roberta (1) Mais... Palavra-chave Yeasts (5) Lactic acid bacteria (4) Fermentation (3) Filamentous fungi (3) Lactobacillus (3) Acetic acid (2) Fermentação (2) Lactic acid (2) Microbiologia (2) Saccharomyces (2) Temperatura (2) Vinegar (2) Aerobic deterioration (1) Agaricus brasiliensis (1) Alcoholic fermentation (1) Antitumor properties (1) Apple (1) Bacaba (1) Biofuel (1) Biosensor (1) Mais... Tipo do documento Info:eu-repo/semantics/article (17) Info:eu-repo/semantics/other (1) Ano 2020 (1) 2018 (1) 2017 (1) 2015 (1) 2014 (1) 2013 (1) 2012 (1) 2011 (1) 2010 (1) 2009 (3) 2008 (1) 2006 (2) 2004 (1) 2003 (1) 2001 (1) Mais... País Brazil (18) Idioma Inglês (14) Português (4)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 18 Primeira ... 1 ... Última Laser biosensor use for the microbial metabolic activity assessment of kefir vinegar PAB Magalhães-Guedes,Karina Teixeira; Viana,Roberta Oliveira; Braga Junior,Roberto Alves; Dias,Disney Ribeiro; Ferreira,Camila Duarte; Nunes,Itaciara Larroza; Schwan,Rosane Freitas. Abstract: The objective of this work was to verify the use of a laser biosensor for the microbial metabolic activity assessment of kefir vinegar. Kefir grains were inoculated in apple must and were analyzed daily using the biospeckle technique. The initial biological activity was of 14.21 pixels per absolute value of differences (AVD). The biological activity of kefir grains decreased in the early days of fermentation and increased on the fourth day to 11.51 pixels per AVD; however, on the last day, the biological activity of kefir grains decreased to 7.12 pixels (alcoholic fermentation) and to 6.77 pixels per AVD (acetic fermentation). This new biospeckle methodology facilitates the microbiological control in fermentation processes. Tipo: Info:eu-repo/semantics/article Palavras-chave: Biosensor; Biospeckle; Kefir grains; Vinegar. Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018001101276 New inoculants on maize silage fermentation R. Bras. Zootec. Assis,Fábia Giovana do Val de; Ávila,Carla Luiza da Silva; Pinto,José Cardoso; Schwan,Rosane Freitas. The objective of this study was to evaluate the effect of bacterial inoculants at two inoculation rates on chemical and biological characteristics of maize silage. The treatments consisted of two inoculating rates (5 and 6 log cfu g-1of forage) for each strain of lactic acid bacteria (LAB) identified as Lactobacillus buchneri, L. hilgardii, or L. plantarum. The maize was ensiled in experimental PVC silos. Samples were taken for the determination of the contents of dry matter (DM), crude protein (CP), neutral detergent fiber (NDF), water-soluble carbohydrates (WSC), organic acids and alcohols, for the evaluation of the populations of lactic acid bacteria, yeasts, filamentous fungi, and for the determination of pH values during ensilage and after 30 or 90... Tipo: Info:eu-repo/semantics/article Palavras-chave: Filamentous fungi; Inoculation; Lactic acid bacteria; Volatile fatty acids; Yeasts. Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982014000800395 Aerobic stability of sugar cane silages with a novel strain of Lactobacillus sp. isolated from sugar cane R. Bras. Zootec. Ávila,Carla Luiza da Silva; Pinto,José Cardoso; Oliveira,Dâmiany Pádua; Schwan,Rosane Freitas. The objective of this research was to evaluate the effect of the addition of two Lactobacillus strains on the aerobic stability of the sugar cane (Saccharum spp.) silages. The experiment was carried out in a completely randomized design with three replicates in split-plot in time scheme, so that the treatments (silages without inoculant and with novel strain or commercial inoculants) were randomized on plot and in times of aerobic evaluation of the silages (zero, two, four, and six days after the opening of the silos) as subplots. The loss of stability of silages was continuous during the time of aerobic exposure. Inoculants influenced the changes in populations of lactic acid bacteria and yeasts and in the ammoniacal nitrogen, acetic acid and ethanol... Tipo: Info:eu-repo/semantics/article Palavras-chave: Acetic acid; Fermentation; Lactic acid; Microbiology. Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000200003 Efeito da adição de Lactobacillus sp. na ensilagem de cana-de-açúcar R. Bras. Zootec. Valeriano,Alexandre Rocha; Pinto,José Cardoso; Ávila,Carla Luiza da Silva; Evangelista,Antônio Ricardo; Tavares,Valdir Botega; Schwan,Rosane Freitas. Objetivou-se avaliar o efeito de aditivos microbianos com bactérias heterofermentativas ou homofermentativas sobre as características de silagens de cana-de-açúcar (Saccharum spp.). A cana-de-açúcar foi inoculada com as bactérias Lactobacillus plantarum (LP), L. paracasei (LPARA), L. brevis (LBREVIS), L.buchneri (LB), isoladas da silagem de canade-açúcar, e três inoculantes comerciais, dois contendo L. buchneri (Pioneer 11A44TM-LBP e Lalsil Cana-LBLC) e um, L. plantarum (Biomax®-LPB), e avaliada em comparação a uma silagem controle (sem inoculante). Todos os inoculantes foram aplicados com população de 10(5) ufc da bactéria por g de forragem. O delineamento utilizado foi o inteiramente casualizado com oito tratamentos e três repetições. O efeito da... Tipo: Info:eu-repo/semantics/article Palavras-chave: Estabilidade aeróbia; Fermentação; Microbiologia; Temperatura. Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982009000600006 Chemical and microbiological characteristics of sugar cane silages treated with microbial inoculants R. Bras. Zootec. Ávila,Carla Luiza da Silva; Valeriano,Alexandre Rocha; Pinto,José Cardoso; Figueiredo,Henrique César Pereira; Rezende,Adauton Vilela de; Schwan,Rosane Freitas. The aim of this research was to evaluate the effect of microbial additives containing heterofermentative or homofermentative bacteria on the chemical and microbiological characteristics of sugar cane (Saccharum spp) silages. Sugar cane was inoculated with Lactobacillus plantarum, L. paracasei, L. brevis or L. buchneri previously isolated from sugar cane silages or commercial inoculants containing L. buchneri or L. plantarum. Silages were produced in laboratory silos (10 × 60 cm PVC tubes) and evaluated 90 days after ensiling. A randomized complete design was used with eight treatments (seven inoculants and control - without inoculant) and three replications. The inoculation with bacteria affected lactic acid bacteria, yeast populations, volatile fatty... Tipo: Info:eu-repo/semantics/article Palavras-chave: Acetic acid; Ethanol; Heterofermentative bacteria; Lactic acid; Lactobacillus; Yeasts. Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010000100004 Estabilidade aeróbia de silagens de capim-mombaça tratadas com Lactobacillus buchneri R. Bras. Zootec. Ávila,Carla Luiza da Silva; Pinto,José Cardoso; Figueiredo,Henrique César Pereira; Morais,Augusto Ramalho de; Pereira,Odilon Gomes; Schwan,Rosane Freitas. Objetivou-se avaliar o efeito da adição de duas cepas de Lactobacillus buchneri sobre a estabilidade aeróbia de silagens de capim-mombaça. O experimento foi conduzido em delineamento inteiramente casualizado com três repetições, em esquema de parcelas subdivididas no tempo, de modo que os tratamentos (silagens sem inoculantes e com inoculante experimental e comercial) foram aleatorizados nas parcelas e os tempos de avaliação aeróbia das silagens (0, 2, 8 ou 10 dias após a abertura dos silos) nas subparcelas. Após 90 dias de armazenamento, os silos foram abertos e amostras de aproximadamente 2,5 kg foram retiradas para avaliação da estabilidade aeróbia com base na temperatura de cada amostra. As mudanças químicas e microbiológicas foram avaliadas. Após... Tipo: Info:eu-repo/semantics/article Palavras-chave: Ácido acético; Ácido lático; Fermentação; Microbiologia; Temperatura. Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982009000500001 Truths and myths about the mushroom Agaricus blazei Scientia Agricola Dias,Eustáquio Souza; Abe,Carlos; Schwan,Rosane Freitas. The mushroom Agaricus blazei Murrill was discovered in Piedade, state of São Paulo, Brazil, and sent to Japan to be studied for its medicinal properties. Studies in guinea pigs revealed antitumor properties, triggering Japanese importation of A. blazei from Brazil. Because of its high price on the international market, many companies and rural growers produce A. blazei as alternative crop to increase income, but because interest in this mushroom occurred suddenly there has not been enough time for the scientific community to investigate it and, technology used for its cultivation is still based on empirical rules. There are also some contradicting data regarding the classification of this mushroom, and its antitumor properties still need to be confirmed in... Tipo: Info:eu-repo/semantics/article Palavras-chave: Antitumor properties; Cogumelo do sol; Royal agaricus; Sun mushroom. Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162004000500014 A survey of whole-plant corn silages from Minas Gerais dairy farms Scientia Agricola Santos,Andréia de Oliveira dos; Dias Junior,Gilson Sebastião; Pereira,Marcos Neves; Schwan,Rosane Freitas; Ávila,Carla Luiza da Silva. ABSTRACT Whole-plant corn silage (WPCS) is a commonly used forage for feeding dairy cattle in Brazil. The aim of this study was to evaluate on-farm ensilaging practices and the nutritional value, microbiology and fermentation profiles of WPCS from dairy farms in the south of the state of Minas Gerais, Brazil. Silages from 54 dairy farms located in nine cities were sampled and a questionnaire was distributed for completion to describe the herd profile and ensilage practices. Herd size ranged from 8 to 1,000 lactating cows, and 52 % of the farms had fewer than 50 cows in lactation. The majority of the farms cultivated hard endosperm texture hybrids (52 %) and used pull-type forage harvesters (87 %). Double-sided plastic was the most used form of silo... Tipo: Info:eu-repo/semantics/article Palavras-chave: Aerobic deterioration; Ensilaging practices; Dairy farming; Lactic acid bacteria. Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162020000200401 Microbial diversity in a bagasse-based compost prepared for the production of Agaricus brasiliensis BJM Silva,Cristina Ferreira; Azevedo,Raquel Santos; Braga,Claudia; Silva,Romildo da; Dias,Eustáquio Souza; Schwan,Rosane Freitas. Edible mushrooms are renowned for their nutritional and medicinal properties and are thus of considerable commercial importance. Mushroom production depends on the chemical composition of the basic substrates and additional supplements employed in the compost as well as on the method of composting. In order to minimise the cost of mushroom production, considerable interest has been shown in the use of agro-industrial residues in the preparation of alternative compost mixtures. However, the interaction of the natural microbiota present in agricultural residues during the composting process greatly influences the subsequent colonisation by the mushroom. The aim of the present study was to isolate and identify the microbiota present in a sugar cane bagasse... Tipo: Info:eu-repo/semantics/article Palavras-chave: Agaricus brasiliensis; Cane sugar bagasse; Microbial diversity. Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822009000300023 Incidence and distribution of filamentous fungi during fermentation, drying and storage of coffee (Coffea arabica L.) beans BJM Silva,Cristina Ferreira; Batista,Luis Roberto; Schwan,Rosane Freitas. The objective of this work was to isolate and characterize filamentous fungi present in different stages of harvest, fermentation, drying and storage of coffee beans processed by natural method. The cherries were hand-picked and then placed on a cement drying platform where they remained until reached 11% of humidity. Microbial counts were found in all samples during fermentation and drying of the coffee beans. Counts of fungi in the coffee cherries collected from the tree (time 0) were around 1.5 x 10³ CFU/g. This number increased slowly during the fermentation and drying reaching values of 2 x 10(5) CFU/g within 22 days of processing. Two hundred and sixty three isolates of filamentous fungi were identified. The distribution of species during... Tipo: Info:eu-repo/semantics/article Palavras-chave: Fermentation; Filamentous fungi; Coffee; Toxigenic fungi. Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822008000300022 Evaluation of stress tolerance and fermentative behavior of indigenous Saccharomyces cerevisiae BJM Ramos,Cíntia Lacerda; Duarte,Whasley Ferreira; Freire,Ana Luiza; Dias,Disney Ribeiro; Eleutherio,Elis Cristina Araújo; Schwan,Rosane Freitas. Sixty six indigenous Saccharomyces cerevisiae strains were evaluated in stressful conditions (temperature, osmolarity, sulphite and ethanol tolerance) and also ability to flocculate. Eighteen strains showed tolerant characteristics to these stressful conditions, growing at 42 ºC, in 0.04% sulphite, 1 mol L-1 NaCl and 12% ethanol. No flocculent characteristics were observed. These strains were evaluated according to their fermentative performance in sugar cane juice. The conversion factors of substrates into ethanol (Yp/s), glycerol (Yg/s) and acetic acid (Yac/s), were calculated. The highest values of Yp/s in sugar cane juice fermentation were obtained by four strains, one isolated from fruit (0.46) and the others from sugar cane (0.45, 0.44 and 0.43).... Tipo: Info:eu-repo/semantics/article Palavras-chave: Alcoholic fermentation; Biofuel; Fermentation kinetics; UFLA FW221; Saccharomyces cerevisiae. Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000300044 Fermentation process for production of apple-based kefir vinegar: microbiological, chemical and sensory analysis BJM Viana,Roberta Oliveira; Magalhães-Guedes,Karina Teixeira; Braga Jr.,Roberto Alves; Dias,Disney Ribeiro; Schwan,Rosane Freitas. Abstract The aim of this study was to develop a kefir apple-based vinegar and evaluate this fermentation process using new methodology with Biospeckle Laser. Brazilian kefir grains were inoculated in apple must for vinegar production. In this study, the microbial community present in kefir, and correspondent vinegar, was investigated using Matrix Assisted Laser Desorption/Ionization - Time of Flight Mass Spectrometry (MALDI-TOF MS) technique. Saccharomyces cerevisiae, Lactobacillus paracasei, Lactobacillus plantarum, Acetobacter pasteurianus and Acetobacter syzygii were the microbial species identified. S. cerevisiae, L. plantarum, A. pasteurianus and A. syzygii were found in smaller quantities at the beginning of the alcoholic fermentation, but were found... Tipo: Info:eu-repo/semantics/article Palavras-chave: Yeast; Saccharomyces; Lactobacillus; Apple; MALDI-TOF; Biospeckle Laser; Vinegar. Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000300592 Chemical and microbiological evaluation of ensiled sugar cane with different additives BJM Bravo-Martins,Claudia Eugênia Castro; Carneiro,Heloisa; Castro-Gómez,Raúl Jorge Hernán; Figueiredo,Henrique César Pereira; Schwan,Rosane Freitas. Sugar cane silage has a potential for animal feeding, but uncontrolled growth of undesirable microorganisms may cause nutritional losses and affect the animal productivity and health. The objective of this work was to evaluate the microbiological quality and chemical composition of ensiled sugar cane with and without nutritional additives after 30 days of fermentation. Yeasts, filamentous fungi and distinct groups of bacteria were enumerated by plate count methods and the chemical analyzes comprised dry matter, crude protein, fiber content, lignin, and pH. Facultative aerobic bacteria and filamentous fungi were not detected during the fermentative process in any of the treatments. The number of yeasts in five varieties of sugar cane silage without... Tipo: Info:eu-repo/semantics/article Palavras-chave: Sugar cane silage; Fermentation; Yeasts; Lactic acid bacteria. Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822006000400018 Isolation and identification of yeasts and filamentous fungi from yoghurts in Brazil BJM Moreira,Silvia Regina; Schwan,Rosane Freitas; Carvalho,Eliana Pinheiro de; Wheals,Alan E.. Seventy-two cartons of yoghurt were sampled three times at monthly intervals from four different local manufacturers. Total counts were close to 6 x 10(7) cells g-1 of yoghurt. Yeast counts varied from 1 to 2,700 g-1. There was no evidence of systematic contamination at source but this longitudinal study revealed that ad hoc contamination and improper storage led to the higher yeast counts. Contamination was generally higher in the hotter months but was lower overall than reported from other countries. A total of 577 yeast isolates were identified belonging to ten species. The most abundant yeasts were, in order, Debaryomyces hansenii, Saccharomyces cerevisiae, Mrakia frigida, Hansenula spp., Candida parapsilosis, Debaryomyces castellii and Candida... Tipo: Info:eu-repo/semantics/article Palavras-chave: Yeasts; Filamentous fungi; Yoghurts; Deterioration. Ano: 2001 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822001000200009 Brazilian kefir: structure, microbial communities and chemical composition BJM Magalhães,Karina Teixeira; Pereira,Gilberto Vinícius de Melo; Campos,Cássia Roberta; Dragone,Giuliano; Schwan,Rosane Freitas. Microbial ecology and chemical composition of Brazilian kefir beverage was performed. The microorganisms associated with Brazilian kefir were investigated using a combination of phenotypic and genotypic methods. A total of 359 microbial isolates were identified. Lactic acid bacteria (60.5%) were the major isolated group identified, followed by yeasts (30.6%) and acetic acid bacteria (8.9%). Lactobacillus paracasei (89 isolates), Lactobacillus parabuchneri (41 isolates), Lactobacillus casei (32 isolates), Lactobacillus kefiri (31 isolates), Lactococcus lactis (24 isolates), Acetobacter lovaniensis (32 isolates), Kluyveromyces lactis (31 isolates), Kazachstania aerobia (23 isolates), Saccharomyces cerevisiae (41 isolates) and Lachancea meyersii (15 isolates)... Tipo: Info:eu-repo/semantics/article Palavras-chave: Lactobacillus; Saccharomyces; Fermented beverage; Brazilian kefir grains. Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822011000200034 Bacaba beverage produced by Umutina Brazilian Amerindians: Microbiological and chemical characterization BJM Puerari,Cláudia; Magalhães-Guedes,Karina Teixeira; Schwan,Rosane Freitas. Bacaba chicha is a beverage prepared by the indigenous Umutina people from the bacaba fruit (Oenocarpus bacaba), a purple berry that is rich in fat and carbohydrates, as well as a source of phenolic compounds. In this study, samples of bacaba chicha beverage were collected, and the microbial community was assessed using culture-dependent and -independent techniques. The nutritional composition and metabolite profiles were analyzed, and species belonging to lactic acid bacteria (LAB) and yeasts were detected. The LAB group detected by culture-dependent analysis included Enterococcus hormaechei and Leuconostoc lactis. Polymerase chain reaction and denaturing gradient gel electrophoresis (PCR-DGGE) detected additional Propionibacterium avidum, Acetobacter... Tipo: Info:eu-repo/semantics/article Palavras-chave: Non-alcoholic beverage; Indigenous beverage; Lactic acid bacteria; Yeasts; Bacaba. Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822015000401207 Cultivo do cogumelo Pleurotus sajor-caju em diferentes resíduos agrícolas Ciência e Agrotecnologia Dias,Eustáquio Souza; Koshikumo,Érika M. S.; Schwan,Rosane Freitas; Silva,Romildo da. Diferentes resíduos agrícolas disponíveis na região sul de Minas Gerais foram testados para o cultivo do cogumelo Pleurotus sajor-caju. Foram avaliados os seguintes substratos: palha de feijão pura (PFP), palha de milho pura (PMP), casca de café pura (CCP), palha de feijão enriquecida com 2% de calcário, 2% de gesso e 10% de farelo de trigo (PFE), palha de milho enriquecida (PME) e casca de café enriquecida (CCE). Todos os substratos receberam 2% de inoculante e foram incubados a 24°C. Após a colonização, os sacos foram mantidos abertos em ambiente a 24°C e umidade a 80%. PFP, PFE e PME apresentaram os melhores resultados na produção de cogumelos, com uma eficiência biológica de 85,7; 81,4 e 83,4%, respectivamente. A palha de feijão foi considerada o... Tipo: Info:eu-repo/semantics/article Palavras-chave: Pleurotus sajor-caju; Cogumelo; Resíduos agroindustriais; Palha de feijão; Palha de milho; Casca de café. Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542003000600022 Avaliação da coloração de basidiocarpos desidratados de Agaricus blazei segundo escala de Munsell Ciência e Agrotecnologia Delú,Marisa Aparecida da Fonseca; Dias,Eustáquio Souza; Schwan,Rosane Freitas; Vilas Boas,Eduardo Valério de Barros. Com este trabalho objetivou-se avaliar a coloração final de basidiocarpos desidratados de Agaricus blazei, após serem submetidos a tratamento com ácidos ascórbico e cítrico. Para tanto, utilizaram-se cogumelos A. blazei, cultivados em substrato apropriado e mantidos em estufa. Os cogumelos foram colhidos com o píleo totalmente fechado e após a limpeza em água corrente, os basidiocarpos foram seccionados ao meio no sentido longitudinal, sendo uma metade submetida ao tratamento experimental e a outra metade representando o tratamento controle. Os tratamentos experimentais consistiram da imersão das metades dos basidiocarpos em solução de ácido ascórbico comercial nas concentrações de 0, 10, 20 e 30 mg/L durante 0, 2, 5, 10, 15 ou 20 minutos. Para o ácido... Tipo: Info:eu-repo/semantics/other Palavras-chave: Cogumelos; Padronização da coloração; Pós-colheita. Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542006000100023 Registros recuperados: 18 Primeira ... 1 ... Última

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