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| Registros recuperados: 2.860 | |
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| Vriesmann,Lúcia Cristina; Petkowicz,Carmen Lúcia de Oliveira; Carneiro,Paulo Irajara Borba; Costa,Maria Eugênia; Beleski-Carneiro,Eliana. |
| The aim of this work was to study the acidic polysaccharides of Psidium cattleianum. Pectic fractions were obtained by successive extractions with water, EDTA and sodium carbonate (4 and 25ºC). Monosaccharide composition, total carbohydrates, uronic acids and protein contents were determined for each fraction. The yield of water and EDTA-soluble fractions and high content of uronic acid were consistent with the presence of pectins probably arising from the middle lamellae. On the other hand, sodium carbonate-soluble pectins had a higher neutral sugar content, indicating highly branched polysaccharides in these fractions, consistent with pectins from cell wall. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Pectins; Acidic polysaccharides; Psidium cattleianum; Cell wall. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000200001 |
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| Finger,Fernando Luiz; Santos,Mirelle Mayana de Sousa; Araujo,Fernanda Ferreira; Lima,Paula Cristina Carvalho; Costa,Lucas Cavalcante da; França,Christiane de Fatima Martins; Queiroz,Matheus da Costa. |
| ABSTRACT The breakdown of dormancy and early sprouting is one of the main causes of losses of stored potatoes. Sprouting control becomes important especially when tubers are submitted to long-term storage for further processing by the potato industry. The objective of this work is to evaluate the effect of organic sprout inhibitors, eugenol and menthol essential oils, on the suppression of growth on non-dormant ‘Asterix’ tubers stored at 8 °C. Administration of eugenol and menthol essential oils reduced the number and the length of sprouts during cold storage up to fifty days. Nevertheless, the essential oils stimulated the break of bud apical dominance, stimulating auxiliary buds growth. The effect of the oils was restricted to inducing necrosis of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Solanum tuberosum; Eugenol; Menthol; Buds; Periderm. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132018000100206 |
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| Amaral,Marcelo da Cunha; Bonecker,Ana Cristina Teixeira; Ortiz,Cláudio H. D.. |
| This work aimed to know the tolerance mechanisms through the salinity variation by Na+ K+ - ATPase and Mg++ - ATPase and enzymes encountered in the gills of Poecilia vivipara. In field, the presence of this species was observed in salinities of 0 and 28. In laboratory, these fish were maintained in aquarium with mean salinity of 30 and positive responses were obtained. Some adult specimens, collected in a lagoon of the Coqueiros Beach, were utilized as matrixes. In the experiments the specimens used were those born in the test aquarium. For each salinity studied three replicates were made with three specimens for each one. The alevins were maintained in salinities of 5, 10, 15, 20, 25, 30 and 35 during a month for adaptation. Gills were extracted in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Poecilia vivipara; Na+ K+ ATPase; Mg++ ATPase; Osmoregulation. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132001000100001 |
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| Chen,Meng-Yan; Zheng,Wei; Dong,Qiu-Yue; Li,Zhen-Hua; Shi,Lu-E; Tang,Zhen-Xing. |
| In this work, alginate-whey protein was used as wall materials for encapsulating Lactobacillus delbrueckii subsp. bulgaricus (L. bulgaricus). The characteristics of encapsulated and free L. bulgaricus showed that the free L. bulgaricus lost viability after 1 min exposure to simulated gastric fluid (SGF) at pH 2.0 and 2.5. However, the viability of encapsulated L. bulgaricus did not decrease in SGF at pH 2.5 for 2 h incubation. The viable numbers of encapsulated L. bulgaricus decreased less than 1.0 log unit for 2 h incubation in SGF at pH 2.0. For bile stability, only 1.2 log units and 2.0 log units viability of the encapsulated L. bulgaricus was lost in 1 and 2% bile for 1 h exposure, respectively, compared with no survival of free L. bulgaricus under the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Encapsulation; Alginate; Whey protein; Probiotics; Stability. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132014000500736 |
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| Vitti,Maria Carolina Dario; Sasaki,Fabiana Fumi; Miguel,Patrícia; Kluge,Ricardo Alfredo; Moretti,Celso Luiz. |
| The purpose of the present study was to evaluate the effect of different potato cultivars and storage temperatures on the specific activity of phenylalanine ammonia-lyase (PAL), polyphenol oxidase (PPO) and peroxidase (POD) in minimally processed potatoes. Potato cultivars Agata, Asterix and Monalisa were selected, washed, peeled, diced, sanitized, centrifuged, vacuum- packed and stored at 5 and 15°C for 9 and 5 days, respectively. There was an increase in the enzymatic activity in all the cultivars stored at 15°C. The cultivars 'Agata' and 'Asterix' stored at 5ºC did not differ significantly between them for the PAL, PPO and POD activities. The PAL, PPO and POD activities were also influenced by the storage temperature. The cultivars Agata and Asterix... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Solanum tuberosum L; Phenylalanine ammonia-lyase; Polyphenol oxidase; Peroxidase; Minimal processing. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132011000500016 |
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| Fadaei-Kenarsary,Meysam; Moghaddam,Hadi Fathi; Mansouri,Seyyed Mohammad Taghi; Farbood,Yaghoob. |
| ABSTRACT Relapse is highly prevalent after detoxification and depression. Due to the advantages of venlafaxine compared with other antidepressants, it is expected that venlafaxine administration may reduce relapse after detoxification and depression. This study aimed to evaluate the effects of venlafaxine on depression-induced relapse to morphine dependence after methadone detoxification. Eighty Sprague-Dawley rats were habituated and conditioned with morphine (10 mg/kg, S.C., for 4 days). After that, primary forced swimming and conditioned place preference (CPP) were tested. They were followed by methadone (70 mg/kg/day, P.O., for 7 days) administration, extinguishing, forced swimming stress (FSS) and administration of venlafaxine (80 mg/kg/day, I.P., for... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Morphine; Methadone; Depression; Relapse; Venlafaxine; Rat. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100311 |
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| Cruz,Lútecia Hiera da; Santana,Henrique de; Zaia,Cássia Thaïs Bussamra Vieira; Zaia,Dimas Augusto Morozin. |
| This work showed that the adsorption of glyphosate (GPS) depends on surface area for clays and amount of clays and CEC for soils. Organic matter (OM) had a secondary role in the adsorption of GPS on soils. The adsorption of GPS on soils from Londrina and Floraí counties and clays (montmorillonite, kaolinite) decreased when pH increased, however, for bentonite clay and soil from Tibagi county was kept constant. For the soils, the competitive adsorption between GPS and phosphate showed that displace of GPS by phosphate was related to the amount of clays, CEC and pH. GPS was not easily displaced by phosphate on the clays. The FT-IR spectra of the soils and clays showed that soil from Londrina resembled kaolinite. Thus, this could explain the results of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Glyphosate; Adsorption; Clays; Soils. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132007000300004 |
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| Lopes,Toni Jefferson; Gonçalves,Odinei Hess; Barros,Ricardo Barbosa; Capelli,Francine Carla Rodrigues; Machado,Ricardo Antonio Francisco; Quadri,Mara Gabriela Novy; Quadri,Marintho Bastos. |
| The main purpose of this work was to produce a pellet to minimize undesirable effects in fixed beds, such as colmatation, through clay fixation on the surface of polymeric particles. Preliminary experiments were carried out by heating the clay, namely Tonsil Terrana 580FF, in order to observe variations on its capacity to adsorb anthocyanins derived from red cabbage. Clays was fixed on five samples of high density polyethylene (HDPE) at 180°C -210°C for two hours. The morphological analyses of the resulting particles were accomplished through Scanning Electron Microscopy (SEM). The experiments demonstrated an increase on clay's adsorptive capacity of 15.65% at 120°C for 30 hours and 16.80% at 170°C for two hours. The SEM analysis showed that the clay... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Adsorption; Clay; Polymer; Anthocyanin/red cabbage. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132005000400034 |
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| Tsai,S.; Lin,C.. |
| Cryopreservation is a long-term storage technique to preserve the biological material without deterioration for extended period of time at least several thousands of years. The ability to preserve and store both maternal and paternal gametes provides a reliable source of fish genetic material for scientific and aquaculture purposes as well as for conservation of biodiversity. Successful cryopreservation of fish sperm have been achieved for more than 200 fish species and many fish species have been adequated for the purpose of cryobanking. Cryopreservation of fish embryo is not viable, mainly because of the same limitations as in fish oocytes, i.e., high chilling sensitivity and low membrane permeability. However, cryopreservation of isolated embryonic... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cryopreservation; Sperm; Embryo; Oocyte; Blastomere. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132012000300014 |
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| Registros recuperados: 2.860 | |
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