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| Registros recuperados: 15 | |
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| Rosa-Magri,Márcia Maria; Avansini,Simoni Helena; Lopes-Assad,Maria Leonor; Tauk-Tornisielo,Sâmia Maria; Ceccato-Antonini,Sandra Regina. |
| The alteration of minerals in rocks and the availability of elements for plant nutrition require long periods of time, and microorganisms are thought to induce the release of potassium and phosphate from rocks. In this context, this work evaluates the role of the yeast Torulaspora globosa, isolated from the sugar cane rhizosphere, in the solubilization of potassium from alkaline ultramafic rock powder. The experiments were performed in liquid medium, with or without agitation, at 30°C with the following treatments: culture medium + alkaline ultramafic; culture medium + yeast suspension; and culture medium + yeast suspension + alkaline ultramafic. The results showed that as much as 38% of the total potassium in the rock was released in the medium with the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biosolubilization; Insoluble rocks; Alkaline ultramafic. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132012000400013 |
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| Ceccato-Antonini,Sandra Regina; Tosta,Christiann Davis; Silva,Ana Cláudia da. |
| Twenty-four yeasts out of 342 isolated from the fermentative process showed killer activity and three of them were selected for the fermentative efficiency evaluation in batch system with cell recycle, flask and fermentor experiments. The selected three killer strains did not present similar results to those of pressed (baking) yeast concerning ethanol (0.07-0.18; 0.12-0.20; 0.10-0.13; 0.22-0.25 g/g, respectively) and biomass (0.19-0.26; 0.33-0.39; 0.13-0.27; 0.47-0.61 g/g, respectively) yields and fermentative efficiency (12.3-36.3; 21.0-40.0; 19.3-26.3; 47.6-54.0 %, respectively) in sugarcane juice, in flasks. In fermentor, similar behaviour was observed. However, the selected strains showed high cellular viability and killer activity (using cell-free... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Killer yeasts; Alcoholic fermentation; Ethanol; Killer toxin. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132004000100003 |
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| Meneghin,Silvana Perissatto; Reis,Fabricia Cristina; Almeida,Paulo Garcia de; Ceccato-Antonini,Sandra Regina. |
| The ethanol production in Brazil is carried out by fed-batch or continuous process with cell recycle, in such way that bacterial contaminants are also recycled and may be troublesome due to the substrate competition. Addition of sulphuric acid when inoculum cells are washed can control the bacterial growth or alternatively biocides are used. This work aimed to verify the effect of chlorine dioxide, a well-known biocide for bacterial decontamination of water and equipments, against contaminant bacteria (Bacillus subtilis, Lactobacillus plantarum, Lactobacillus fermentum and Leuconostoc mesenteroides) from alcoholic fermentation, through the method of minimum inhibitory concentration (MIC), as well as its effect on the industrial yeast inoculum. Lower MIC... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chlorine dioxide; Bacteria; Yeast; Antibacterial agent; Alcohol; Fermentation. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822008000200026 |
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| Martini,Cristina; Margarido,Luiz Antonio Correia; Ceccato-Antonini,Sandra Regina. |
| The artisanal production of cachaça, a beverage obtained by the fermentation of sugar cane juice after distillation, especially by small-sized producers, has traditionally used natural ferment ("fermento caipira") which consists of sugar cane juice with crushed corn, powdered rice, or citrus fruits. In despite of the difficulties in quality control due to the high level of contaminants and longer periods of preparation, the sensorial quality of the beverage may be attributed to the physiological activities of wild yeasts and even bacteria present during fermentation when this ferment is used. In this context, the aim here was to evaluate the microbiological (yeasts) and physicochemical characteristics of sugar cane juice extracted from different parts of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Sugar cane juice; Yeasts; Fermentation; Organic management. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612010000300037 |
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| Gabriel,Afra Vital Matos Dias; Verruma-Bernardi,Marta Regina; Margarido,Luiz Antônio Corrêa; Borges,Maria Teresa Mendes Ribeiro; Nassu,Renata Tieko; Lavorenti,Norberto Antonio; Ceccato-Antonini,Sandra Regina. |
| This study verified the effect of the spontaneous fermentation/natural ferment (NF) on the chemo-sensory quality of cachaça, comparing to the commercial ferment (CF). The effect of ageing (maturation) was also analysed in the beverage. Microbiological analysis (plating on selective media for total/wild yeast and bacteria counting) and physico-chemical analysis (pH, acidity and soluble solids) were performed in the samples of the must and the ferment collected during three cycles of fermentation in a semi-industrial scale. Samples of cachaça were stored in 5-L oak containers for 45 days, subsequently analyzing the physico-chemical characteristics (pH, acidity, alcohol content, copper and secondary compounds) and sensory acceptability (aroma, flavour,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Alcoholic beverage; Sensorial quality; Physico-chemical quality. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782012000500026 |
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| Verruma-Bernardi,Marta R; Pimenta,Daniella M; Levrero,Gabriel RR; Forti,Victor A; Medeiros,Simone DS de; Ceccato-Antonini,Sandra Regina; Covre,Elizabete A; Ferreira,Marcos D; Moret,Raissa; Bernardi,Alberto CC; Sala,Fernando C. |
| ABSTRACT Kale is a vegetable that has high nutrition content, and balanced fertilization is essential to ensure high yield and quality of agricultural products. Curly kale, less known than regular leaf kale, is a new possibility for consumption. However, little is known about the influence of the type of fertilization on nutritional characteristics. This study aims to evaluate the influence of using organic fertilizers on the productivity, microbiological, and physico-chemical characteristics of Darkibor hybrid curly kale. The treatments consisted of three sources of organic fertilizers, one of organomineral fertilizer, and the control (without fertilization). The highest productivity was observed for kale that was treated with fertilizer in the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brassica oleracea var. acephala; Minerals; Post-harvest; Color; Weight loss. |
| Ano: 2021 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362021000100112 |
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| Registros recuperados: 15 | |
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