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| Amorim,Henrique Vianna de; Scoton,Luiz Carlos; Haag,H.P.; Malavolta,E.. |
| Cocoa seedlings were grown in nutrient solution in order to find out the effects of the levels of N, P, K in the substrate on growth, symptoms and chemical composition of the leaves. A 3x3x3 factorial design was used. The following conclusions can be drawn. 5.1. Among the three elements under study, only nitrogen had a positive, significant effect on growth as measured by height and dry weight. 5.2. The level of a given elements in the leaves did increase when its level in the nutrient solution was raised. On the other hand the N content was positively affected by the concentration of P in the substrate. 5.3. A decrease in the N/P and K/P rations in the leaves was observed when the nutrient solutions had, res-respectively, absence of K and N and high level... |
| Tipo: Info:eu-repo/semantics/article |
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| Ano: 1964 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0071-12761964000100015 |
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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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| Lopes,Mario Lucio; Paulillo,Silene Cristina de Lima; Godoy,Alexandre; Cherubin,Rudimar Antonio; Lorenzi,Marcel Salmeron; Giometti,Fernando Henrique Carvalho; Bernardino,Claudemir Domingos; Amorim Neto,Henrique Berbert de; Amorim,Henrique Vianna de. |
| ABSTRACT In the last 40 years, several scientific and technological advances in microbiology of the fermentation have greatly contributed to evolution of the ethanol industry in Brazil. These contributions have increased our view and comprehension about fermentations in the first and, more recently, second-generation ethanol. Nowadays, new technologies are available to produce ethanol from sugarcane, corn and other feedstocks, reducing the off-season period. Better control of fermentation conditions can reduce the stress conditions for yeast cells and contamination by bacteria and wild yeasts. There are great research opportunities in production processes of the first-generation ethanol regarding high-value added products, cost reduction and selection of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ethanol; Yeast; Fermentation; Distillery. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822016000500064 |
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