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Araújo,Ademir Sérgio Ferreira de; Monteiro,Regina Teresa Rosim; Cardoso,Patrícia Felippe. |
O objetivo deste trabalho foi avaliar o efeito do composto de lodo têxtil sobre plântulas de soja e trigo. O composto de lodo têxtil foi misturado com água e solução nutritiva nas seguintes concentrações (g do composto em 1.000 mL de água e solução nutritiva): 19 g L-1, 38 g L-1, 76 g L-1 e 152 g L-1. Um controle, constituído de água e solução nutritiva, foi incluído no experimento. O delineamento experimental foi inteiramente casualizado com quatro repetições. As plântulas de soja e trigo foram expostas aos extratos do composto, em sistema de hidroponia com aeração e, após 15 dias, foram avaliadas a massa da matéria seca total, altura da parte aérea, comprimento radicular, conteúdo de clorofila e atividade da peroxidase nas folhas e raízes. Houve... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fitotoxicidade; Resíduo industrial; Peroxidase; Clorofila. |
Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2005000600004 |
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Dellamatrice,Priscila Maria; Silva-Stenico,Maria Estela; Moraes,Luiz Alberto Beraldo de; Fiore,Marli Fátima; Monteiro,Regina Teresa Rosim. |
Abstract Dyes are recalcitrant compounds that resist conventional biological treatments. The degradation of three textile dyes (Indigo, RBBR and Sulphur Black), and the dye-containing liquid effluent and solid waste from the Municipal Treatment Station, Americana, São Paulo, Brazil, by the cyanobacteria Anabaena flos-aquae UTCC64, Phormidium autumnale UTEX1580 and Synechococcus sp. PCC7942 was evaluated. The dye degradation efficiency of the cyanobacteria was compared with anaerobic and anaerobic-aerobic systems in terms of discolouration and toxicity evaluations. The discoloration was evaluated by absorption spectroscopy. Toxicity was measured using the organisms Hydra attenuata, the alga Selenastrum capricornutum and lettuce seeds. The three... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Dyes; Toxicity; Discoloration; Cyanobacteria; Degradation. |
Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000100025 |
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Pietrobon,Vivian Cristina; Monteiro,Regina Teresa Rosim; Pompeu,Georgia Bertoni; Borges,Eduardo Poggi e; Lopes,Mario Lucio; Amorim,Henrique Vianna de; Cruz,Sandra Helena da; Viégas,Ellen Karine Diniz. |
The aim of this study was to evaluate the performance of enzymatic hydrolysis of acid or alkali pretreated sugarcane bagasse for the production of fermentable sugars. The first step consisted of selection of commercial enzymes presenting the highest cellulolytic activities. After selection of four enzymes: HPL, CL, P1 and P4, their performances were tested in the bagasse pretreated with acid and alkali. The sugar content of the hydrolysates was analyzed by anion exchange liquid chromatography. Data showed that the joint action of 0.5% acid pretreatment, 121ºC, 30 minutes and enzyme CL provides the best results, 67.25 g of hexose and 148.13g of pentose per kg of dry bagasse. |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bagasse sugarcane; Hydrolysis; Cellulolytic enzymes; HPAEC. |
Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132011000200002 |
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Castanha,Rodrigo Fernandes; Mariano,Adriano Pinto; Morais,Lilia Aparecida Salgado de; Scramin,Shirlei; Monteiro,Regina Teresa Rosim. |
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... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cryptococcus laurentii; Microbial lipids; Cheese whey; Sugarcane molasses; Biodiesel. |
Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822014000200003 |
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