Base de dados : LILACS
Pesquisa : G07.203.300.662 [Categoria DeCS]
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Id: biblio-947433
Autor: Rosa, L. O; Pereira, O. G; Ribeiro, K. G; Valadares Filho, S. C; Cecon, P. R.
Título: Fermentation profile and microbial population in soybean silages with inoculant and powdered molasses / Perfil fermentativo e população microbiana em silagens de soja com inoculante e melaço em pó
Fonte: Arq. bras. med. vet. zootec. (Online);70(5):1586-1594, set.-out. 2018. tab, graf.
Idioma: en.
Resumo: Fermentation profile and microbial population were assessed in soybean silages without any additive (control), with inoculant (I), with I + powdered molasses (I+M), and with powdered molasses only (M). Soybean plants were harvested at the R6 stage and ensiled in 2kg-capacity laboratory silos. The additives were added to the natural matter base of silages. The assessed fermentation periods were 1, 3, 7, 14, 28, and 56 days. A 4 × 6 factorial arrangement (4 additives × 6 fermentation periods) in a completely randomized design with 3 replicates was used. Lactic, acetic, and butyric acids concentrations were influenced by additives and periods (P< 0.05). It was observed higher lactic acid values to control silages, on the 56th day. Lower average values of acetic and butyric acids were observed to I+M and M silages. It was observed quadratic effect to pH values with a reduction estimated of 0.5504, 0.5358, 0.6312 and 0.6680 units to pH values to control, I, I+M, and M silages in the first 10 days. A maximum lactic acid bacteria population was observed at the 28th day of fermentation in silages with inoculant. The inoculant and powdered molasses improve the fermentation profile of soybean silages.(AU)

Avaliou-se o perfil fermentativo e a composição microbiana de silagens de soja sem aditivos (controle), com inoculante (I), com I + melaço em pó (I+M) e com melaço em pó (M). As plantas de soja foram colhidas no estádio R6 e ensiladas em silos laboratoriais com capacidade de 2kg. Os aditivos foram adicionados às silagens na matéria natural. Os períodos de fermentação avaliados foram: 1, 3, 7, 14, 28 e 56 dias. Utilizou-se um esquema fatorial 4 × 6 (quatro aditivos × seis períodos), em um delineamento completamente ao acaso, com três repetições. Observou-se efeito de aditivos e de período (P<0,05) sobre os ácidos láctico, acético e butírico. Foi constatado maior teor de ácido láctico na silagem controle aos 56 dias. Para os teores dos ácidos acético e butírico, registraram-se menores valores médios nas silagens I+M e M. Observou-se efeito quadrático para o pH das silagens, com estimativa de redução de pH nos primeiros 10 dias igual a 0,5504; 0,5358; 0,6312 e 0,6680 nas silagens controle, I, I+M e M, respectivamente. A máxima população de bactéria ácido-láctica foi observada aos 28 dias nas silagens inoculadas. O inoculante e o melaço em pó melhoram o perfil fermentativo de silagens de soja.(AU)
Descritores: Fermentação
Melaço/estatística & dados numéricos
Silagem/microbiologia
Soja/microbiologia
Limites: Animais
Responsável: BR68.1 - Biblioteca Virginie Buff D'Ápice


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Id: biblio-889142
Autor: Arshad, Muhammad; Hussain, Tariq; Iqbal, Munawar; Abbas, Mazhar.
Título: Enhanced ethanol production at commercial scale from molasses using high gravity technology by mutant S. cerevisiae
Fonte: Braz. j. microbiol;48(3):403-409, July-Sept. 2017. tab, graf.
Idioma: en.
Resumo: Abstract Very high gravity (VHG) technology was employed on industrial scale to produce ethanol from molasses (fermented) as well as by-products formation estimation. The effect of different Brix° (32, 36 and 40) air-flow rates (0.00, 0.20, 0.40, and 0.60 vvm) was studied on ethanol production. The maximum ethanol production was recorded to be 12.2% (v/v) at 40 Brix° with 0.2 vvm air-flow rate. At optimum level aeration and 40 Brix° VHG, the residual sugar level was recorded in the range of 12.5-18.5 g/L, whereas the viable cell count remained constant up to 50 h of fermentation and dry matter production increased with fermentation time. Both water and steam consumption reduced significantly under optimum conditions of Brix° and aeration rate with compromising the ethanol production. Results revealed VHG with continuous air flow is viable technique to reduce the ethanol production cost form molasses at commercial scale.
Descritores: Etanol/metabolismo
Microbiologia Industrial/métodos
Melaço/microbiologia
Saccharomyces cerevisiae/metabolismo
-Fermentação
Hipergravidade
Microbiologia Industrial/instrumentação
Melaço/análise
Melaço/economia
Saccharomyces cerevisiae/genética
Limites: Embrião de Galinha
Tipo de Publ: Estudo de Avaliação
Responsável: BR1.1 - BIREME


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Id: biblio-833153
Autor: Fabrini, Fabricia Flores; Avelino, Katielle Vieira; Marim, Renan Alberto; Cardoso, Bruna Karen; Colauto, Giani Andrea Linde; Colauto, Nelson Barros; Valle, Juliana Silveira do.
Título: Produção de lacase de Pycnoporus sanguineus em meio de cultivo à base de melaço soja / Laccase production by Pycnoporus sanguineus in culture media with soybean molasses / Producción de lacasa de Pycnoporus sanguineus en medio de cultivo con melaza de soja
Fonte: Arq. ciênc. vet. zool. UNIPAR;19(3):159-164, jul.-set. 2016. graf.
Idioma: pt.
Resumo: Lacases são polifenol oxidases que utilizam a capacidade redox de íons cobre para reduzir oxigênio a água e oxidar um substrato fenólico. A síntese e secreção de lacases de basidiomicetos dependem de vários fatores como os nutrientes presentes no meio de cultura. Visando à produção de lacase, Pycnoporus sanguineus foi cultivado em meio contendo melaço de soja como única fonte de carbono, ureia como fonte de nitrogênio suplementar em diferentes concentrações (0,6; 1,2; 2,4; 4,8 e 9,6 g/L de nitrogênio) e diferentes concentrações de CuSO4 (0, 150, 200, 250 e 300 µM). O extrato enzimático produzido nas melhores condições de cultivo foi utilizado para a descoloração dos corantes remazol azul brilhante R (antraquinona), amarelo 145, preto 5, vermelho 195 (azo) e verde malaquita (trifenilmetano). As concentrações de nitrogênio não afetaram a produção de lacase, exceto a maior concentração (9,6 g/L) que reduziu a atividade enzimática. A adição de cobre ao meio de cultivo (150 µM) aumentou a atividade de lacase em 112%. A maior atividade de lacase (~34300 U/L) promoveu a descoloração dos corantes remazol azul brilhante R (67,5%) e verde malaquita (28,3%) em 24h, sendo os corantes azo descoloridos apenas parcialmente. Concluiu-se que o melaço de soja é um resíduo agroindustrial adequado para produção de lacase de P. sanguineus com potencial para degradação de corantes.

Laccases are multicopper oxidases using the redox ability from copper ions to reduce oxygen to water, while oxidizing a phenolic substrate. Laccase synthesis and secretion in basidiomycetes depend on the conditions provided and on the nutrients present in the culture medium. Pycnoporus sanguineus was cultivated in medium containing soybean molasses as the sole carbon source, with urea as the source of supplemental nitrogen at different concentrations (0.6, 1.2, 2.4, 4.8 and 9.6 g/L nitrogen), and different CuSO4 concentrations (0, 150, 200, 250 and 300 µM). The enzymatic extract produced under the best cultivation conditions was used for the depigmentation of remazole brilliant blue R (anthraquinone), yellow 145, black 5, red 195 (azo) and malachite green (triphenylmethane). Nitrogen concentrations did not affect laccase production, except for the higher concentration (9.6 g/L) reducing enzymatic activity. The addition of copper to the culture medium (150 µM) increased laccase activity by 112%. The highest laccase activity (~34300 U/L) promoted the depigmentation of remazol brilliant blue R (67.5%) and malachite green (28.3%) dyes in 24 hours. Azo dyes were only partially discolored. Therefore, it can be considered that soybean molasses is an agro-industrial byproduct suitable for the production of P. sanguineus laccase with potential for dye degradation.

Lacasas son polifenoles oxidasas que utilizan la capacidad redox de iones de cobre para reducir el oxígeno del agua y oxidar un sustrato fenólico. La síntesis y secreción de lacasas de basidiomicetos dependen de las condiciones como los nutrientes presentes en el medio de cultura. Buscando la producción de lacasa, se cultivó Pycnoporus sanguineus en medio que contenía melaza de soja como única fuente de carbono, urea como fuente de nitrógeno suplementar a diferentes concentraciones (0,6, 1,2, 2,4, 4,8 y 9,6 g/L de nitrógeno) y diferentes concentraciones de CuSO4 (0, 150, 200, 250 y 300 µM). El extrato enzimático producido en mejores condiciones de cultivo ha sido utilizado para la decoloración de los colorantes remazol azul brillante R (antraquinona), amarillo 145, negro 5, rojo 195 (azoico) y verde malaquita (trifenilmetano). Las concentraciones de nitrógeno no afectaron la producción de lacasa, excepto la mayor concentración (9,6 g/L) que redujo la actividad enzimática. La adición de cobre al medio de cultivo (150 µM) aumentó la actividad de la lacasa en un 112%. La mayor actividad de lacasa (~34300 U/L) promovió la decoloración de los colorantes remazol azul brillante R (67,5%) y verde malaquita (28,3%) en 24h, siendo que los colorantes azoicos fueran parcialmente decolorados. Se concluye que la melaza de soja es un desecho agroindustrial adecuado para la producción de lacasa de P. sanguineus con potencial para degradación de colorantes.
Descritores: Lacase/síntese química
Melaço/provisão & distribução
Pycnoporus/enzimologia
-Soja/enzimologia
Responsável: BR1532.9 - CEDIC - Coordenadoria de Editoração e Divulgação Científica


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Id: lil-723097
Autor: Naheed, Nighat; Jamil, Nazia.
Título: Optimization of biodegradable plastic production on sugar cane molasses in Enterobacter sp. SEL2
Fonte: Braz. j. microbiol;45(2):417-426, Apr.-June 2014. graf, tab.
Idioma: en.
Resumo: Contaminated environments have a large number of bacteria which can accumulate PHA as their energy reserves. Out of 54 isolated bacterial strains from three groups of contaminated sites 48 were found PHA positive. The sites were grouped on the basis of the type of carbon sources i.e. sugars, fatty acids and much diverse type. Strains MFD5, MFD11, UML3, USL2, SEL2, SEL3, SEL10 and PFW1 produced 69.9 ± 0.29, 75.27 ± 0.45, 65.43 ± 0.1, 72.54 ± 0.27, 76.61 ± 0.28, 61.81 ± 0.05, 71.16 ± 0.09 and 74.92 ± 0.5 percent of PHA to their constant cell weight (CCW) respectively in PHA detection media supplemented with 2% glucose. Molasses, whey, crumbs hydrolysate and palm oil were checked as inexpensive carbon sources. Molasses alone could supply the required nutrients for growth and PHA production. Strain SEL2 produced 47.36 ± 0.45% PHA using 2% molasses at 37 °C and pH 7.0. Upon production optimization the best accumulation (80.95 ± 0.01%) was observed in PHA detection media with 0.2% nitrogen source, 3% molasses, pH 5.0 and 37 °C by the strain SEL2. The overall effect of the presence of increased molasses concentration in the media was positive it increased the accumulation period till 72 h. Enterobacter sp. SEL2 (JF901810) is first time being reported for PHA production.
Descritores: Plásticos Biodegradáveis/metabolismo
Microbiologia Ambiental
Enterobacter/metabolismo
Melaço
Poli-Hidroxialcanoatos/metabolismo
Saccharum/metabolismo
-Carbono/metabolismo
Meios de Cultura/química
Enterobacter/isolamento & purificação
Concentração de Íons de Hidrogênio
Temperatura
Responsável: BR1.1 - BIREME


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Monteiro, Regina Teresa Rosim
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Id: lil-723092
Autor: Castanha, Rodrigo Fernandes; Mariano, Adriano Pinto; Morais, Lilia Aparecida Salgado de; Scramin, Shirlei; Monteiro, Regina Teresa Rosim.
Título: Optimization of lipids production by Cryptococcus laurentii 11 using cheese whey with molasses
Fonte: Braz. j. microbiol;45(2):379-387, Apr.-June 2014. graf, tab.
Idioma: en.
Resumo: This study aimed the optimization of culture condition and composition for production of Cryptococcus laurentii 11 biomass and lipids in cheese whey medium supplemented with sugarcane molasses. The optimization of pH, fermentation time, and molasses concentration according to a full factorial statistical experimental design was followed by a Plackett-Burman experimental design, which was used to determine whether the supplementation of the culture medium by yeast extract and inorganic salts could provide a further enhancement of lipids production. The following conditions and composition of the culture medium were found to optimize biomass and lipids production: 360 h fermentation, 6.5 pH and supplementation of (g L-1): 50 molasses, 0.5 yeast extract, 4 KH2PO4, 1 Na2HPO4, 0.75 MgSO4•7H2O and 0.002 ZnSO4•H2O. Additional supplementation with inorganic salts and yeast extract was essential to optimize the production, in terms of product concentration and productivity, of neutral lipids by C. laurentii 11. Under this optimized condition, the production of total lipids increased by 133% in relation to control experiment (from 1.27 to 2.96 g L-1). The total lipids indicated a predominant (86%) presence of neutral lipids with high content of 16- and 18- carbon-chain saturated and monosaturated fatty acids. This class of lipids is considered especially suitable for the production of biodiesel.
Descritores: Queijo/microbiologia
Cryptococcus/crescimento & desenvolvimento
Cryptococcus/metabolismo
Metabolismo dos Lipídeos
Melaço
-Meios de Cultura/química
Concentração de Íons de Hidrogênio
Fatores de Tempo
Tipo de Publ: Research Support, Non-U.S. Gov't
Responsável: BR1.1 - BIREME


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Id: lil-723091
Autor: Veana, F.; Martínez-Hernández, J.L.; Aguilar, C.N.; Rodríguez-Herrera, R.; Michelena, G..
Título: Utilization of molasses and sugar cane bagasse for production of fungal invertase in solid state fermentation using Aspergillus niger GH1
Fonte: Braz. j. microbiol;45(2):373-377, Apr.-June 2014. graf, tab.
Idioma: en.
Resumo: Agro-industrial wastes have been used as substrate-support in solid state fermentation for enzyme production. Molasses and sugarcane bagasse are by-products of sugar industry and can be employed as substrates for invertase production. Invertase is an important enzyme for sweeteners development. In this study, a xerophilic fungus Aspergillus niger GH1 isolated of the Mexican semi-desert, previously reported as an invertase over-producer strain was used. Molasses from Mexico and Cuba were chemically analyzed (total and reducer sugars, nitrogen and phosphorous contents); the last one was selected based on chemical composition. Fermentations were performed using virgin and hydrolyzate bagasse (treatment with concentrated sulfuric acid). Results indicated that, the enzymatic yield (5231 U/L) is higher than those reported by other A. niger strains under solid state fermentation, using hydrolyzate bagasse. The acid hydrolysis promotes availability of fermentable sugars. In addition, maximum invertase activity was detected at 24 h using low substrate concentration, which may reduce production costs. This study presents an alternative method for invertase production using a xerophilic fungus isolated from Mexican semi-desert and inexpensive substrates (molasses and sugarcane bagasse).
Descritores: Aspergillus niger/crescimento & desenvolvimento
Aspergillus niger/metabolismo
Melaço
Saccharum/metabolismo
Resíduos
beta-Frutofuranosidase/isolamento & purificação
beta-Frutofuranosidase/metabolismo
-Aspergillus niger/isolamento & purificação
Cuba
Carboidratos/análise
Fermentação
México
Nitrogênio/análise
Fósforo/análise
Tipo de Publ: Research Support, Non-U.S. Gov't
Responsável: BR1.1 - BIREME


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ANDRIETTA, Sílvio Roberto
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Id: lil-688588
Autor: Vieira, Érika Durão; Andrietta, Maria da Graça Stupiello; Andrietta, Silvio Roberto.
Título: Yeast biomass production: a new approach in glucose-limited feeding strategy
Fonte: Braz. j. microbiol;44(2):551-558, 2013. ilus, graf, tab.
Idioma: en.
Resumo: The aim of this work was to implement experimentally a simple glucose-limited feeding strategy for yeast biomass production in a bubble column reactor based on a spreadsheet simulator suitable for industrial application. In biomass production process using Saccharomyces cerevisiae strains, one of the constraints is the strong tendency of these species to metabolize sugars anaerobically due to catabolite repression, leading to low values of biomass yield on substrate. The usual strategy to control this metabolic tendency is the use of a fed-batch process in which where the sugar source is fed incrementally and total sugar concentration in broth is maintained below a determined value. The simulator presented in this work was developed to control molasses feeding on the basis of a simple theoretical model in which has taken into account the nutritional growth needs of yeast cell and two input data: the theoretical specific growth rate and initial cell biomass. In experimental assay, a commercial baker's yeast strain and molasses as sugar source were used. Experimental results showed an overall biomass yield on substrate of 0.33, a biomass increase of 6.4 fold and a specific growth rate of 0.165 h-1 in contrast to the predicted value of 0.180 h-1 in the second stage simulation.
Descritores: Biomassa
Glucose/metabolismo
Saccharomyces cerevisiae/crescimento & desenvolvimento
Saccharomyces cerevisiae/metabolismo
-Reatores Biológicos/microbiologia
Fermentação
Melaço
Tipo de Publ: Research Support, Non-U.S. Gov't
Responsável: BR1.1 - BIREME


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Id: lil-665837
Autor: Behera, Shuvashish; Mohanty, Rama C; Ray, Ramesh C.
Título: Ethanol fermentation of sugarcane molasses by Zymomonas mobilis MTCC 92 immobilized in Luffa cylindrica L. sponge discs and Ca-alginate matrices
Fonte: Braz. j. microbiol;43(4):1499-1507, Oct.-Dec. 2012. graf, tab.
Idioma: en.
Projeto: UGC.
Resumo: Bio-ethanol production from cane molasses (diluted to 15 % sugar w/v) was studied using the bacterium, Zymomonas mobilis MTCC 92 entrapped in luffa (Luffa cylindrica L.) sponge discs and Ca-alginate gel beads as the immobilizing matrices. At the end of 96 h fermentation, the final ethanol concentrations were 58.7 ± 0.09 and 59.1 ± 0.08 g/l molasses with luffa and Ca-alginate entrapped Z. mobilis cells, respectively exhibiting 83.25 ± 0.03 and 84.6 ± 0.02 % sugar conversion. There was no statistical significant difference (Fischer's LSD) in sugar utilization (t = 0.254, p <0.801) and ethanol production (t =-0.663, p <0.513) between the two immobilization matrices used. Further, the immobilized cells in both the matrices were physiologically active for three more cycles of operation with less than 15 % decrease in ethanol yield in the 4th cycle, which was due to some leakage of cells. In conclusion, luffa sponge was found to be equally good as Ca-alginate as a carrier material for bacterial (Z. mobilis. cell immobilization for ethanol production. Further, it has added advantages such as it is cheap, non-corrosive and has no environmental hazard.
Descritores: Ativadores de Enzimas
Etanol/análise
Fermentação
Luffa/crescimento & desenvolvimento
Melaço/análise
Zymomonas/isolamento & purificação
-Células Imobilizadas
Métodos
Tipo de Publ: Estudo Comparativo
Estudo de Avaliação
Responsável: BR32.1 - Serviço de Biblioteca e Informação Biomédica


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Id: lil-634457
Autor: Galvagno, M. A.; Cerrutti, P..
Título: Aumento de la actividad panificante de levaduras comerciales por aplicación de condiciones de estrés durante su propagación / Increase of baking activity of commercial yeasts by application of stress conditions during their propagation
Fonte: Rev. argent. microbiol;36(1):41-46, Jan.-Mar. 2004. ilus, tab.
Idioma: es.
Resumo: La actividad panificante valorada como producción de CO2 de dos cepas comerciales de Saccharomyces cerevisiae pudo ser incrementada, principalmente en amasijos azucarados, por la aplicación de un esquema de “hambreado/ pulso¼ de melaza de caña de azúcar durante su propagación bajo la forma de lote alimentado. Dicho incremento fue dependiente de la cepa utilizada. Otras características relacionadas con el comportamiento industrial de las levaduras no se vieron afectadas, con excepción de la concentración intracelular de trehalosa.Se discute la aplicabilidad del método para la producción industrial de levaduras de panificación.

Baking activity determined as CO2 production of two commercial strains of Saccharomyces cerevisiae could be increased mainly in sweet bread doughs by introducing a “starvation/ pulse feeding” schedule of sugar cane molasses during a fed-batch propagation . Such increase was strain dependent. Except for the trehalose intracellular level, other traits related to the yeast industrial performance were unaffected. Applicability of method for baker's yeast industrial production is discussed.
Descritores: Dióxido de Carbono/metabolismo
Microbiologia Industrial/métodos
Micologia/métodos
Saccharomyces cerevisiae/crescimento & desenvolvimento
-Pão
Metabolismo dos Carboidratos
Dióxido de Carbono/análise
Fermentação
Melaço
Saccharomyces cerevisiae/metabolismo
Trealose/metabolismo
Tipo de Publ: Estudo Comparativo
Responsável: AR1.2 - Instituto de Investigaciónes Epidemiológicas


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Id: lil-607542
Autor: Saranya, V; Shenbagarathai, R.
Título: Production and characterization of PHA from recombinant E. coli harbouring phaC1 gene of indigenous Pseudomonas sp. LDC-5 using molasses
Fonte: Braz. j. microbiol;42(3):1109-1118, July-Sept. 2011. ilus.
Idioma: en.
Projeto: DBT.
Resumo: Polyhydroxyalkanoates (PHA) are biodegradable and biocompatible green thermoplastics, synthesized by wide variety of bacteria as an intracellular carbon and energy storage intermediate. They are used as an alternative to nonrenewable petroleum derived plastics. The current interest in these biopolyesters is stimulated by the search for cost-effective capitalized production. This paper attempts to achieve maximized production rate from recombinant system using inexpensive substrate. Molasses from agro-industrial waste was used to produce PHA from recombinant E.coli in batch culture. PHA yield in molasses (3.06g/L ± 0.05-75.5 percent) was higher than that of sucrose (2.5g/L ± 0.05 - 65.1 percent). Properties of the polymer produced from molasses and sucrose were analyzed by DSC, TGA, DTA, GC/MS, TLC and optical rotation studies. The findings suggested that molasses enhanced PHA production in recombinant E.coli.
Descritores: Biopolímeros/análise
Proteínas de Escherichia coli
Melaço/análise
Pseudomonas
Poli-Hidroxialcanoatos/análise
Polímeros/análise
Sacarose/análise
-Biodegradação Ambiental
Métodos
Técnicas
Tipo de Publ: Relatório Técnico
Responsável: BR32.1 - Serviço de Biblioteca e Informação Biomédica



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