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| Registros recuperados: 27 | |
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| Sun,Xinyi; Hao,Long; Ma,Hua; Li,Tong; Zheng,Lan; Ma,Zhao; Zhai,Guoyin; Wang,Liqin; Gao,Shanglong; Liu,Xiaonan; Jia,Mengshi; Jia,Le. |
| The extraction parameters for Pleurotus eryngii SI-02 exopolysaccharide (EPS) produced during submerged culture were optimized using response surface methodology (RSM). The optimum conditions for EPS extraction were predicted to be, precipitation time 20.24 h, ethanol concentration 89.62% and pH 8.17, and EPS production was estimated at 7.27 g/L. The actual yield of EPS under these conditions was 7.21 g/L. The in vitro antioxidant results of the EPS showed that the inhibition effects of EPS at a dosage of 400 mg/L on hydroxyl, superoxide anion and 1,1-diphenyl-2-picrylhydrazyl (DPPH) radicals were 59.63 ± 3.72%, 38.69 ± 2.59%, and 66.36 ± 4.42%, respectively, which were 12.74 ± 1.03%, 8.01 ± 0.56%, and 12.19 ± 1.05% higher than that of butylated... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Pleurotus eryngii SI-02; Exopolysaccharide; Extraction; Antioxidant activity; In vitro. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000400009 |
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| Fusconi,Roberta; Godinho,Mirna Januária Leal; Hernández,Isara Lourdes Cruz; Bossolan,Nelma Regina Segnini. |
| A strain of Gordonia sp. (strain Lc), from landfill leachate-contaminated groundwater was characterized by polyphasic taxonomy and studied for exopolysaccharide (EPS) production. The cells were Gram-positive, catalase-positive, oxidase-negative and non-motile. The organism grew both aerobically and, in anoxic environment, in the presence of NaNO3. Rods occured singly, in pairs or in a typical coryneform V-shaped. The organism had morphological, physiological and chemical properties consistent with its assignment to the genus Gordonia and mycolic and fatty acid pattern that corresponded to those of G. polyisoprenivorans DSM 44302T. The comparison of the sequence of the first 500 bases of the 16S rDNA of strain Lc gave 100% similarity with the type strain of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Gordonia polyisoprenivorans; Exopolysaccharide; Groundwater; Landfill. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822006000200014 |
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| Mikiashvili,Nona A; Isikhuemhen,Omoanghe S; Ohimain,Elijah I. |
| Fourteen strains of Grifola frondosa (Dicks.) S. F. Gray, originating from different regions (Asia, Europe and North America) were tested for lignin degradation, ligninolytic enzyme activities, protein accumulation and exopolysaccharide production during 55 days of cultivation on oak sawdust. Lignin degradation varied from 2.6 to7.1 % of dry weight of the oak sawdust substrate among tested strains. The loss of dry matter in all screened fungi varied between 11.7 and 33.0%, and the amount of crude protein in the dry substrate varied between 0.94 to 2.55%. The strain, MBFBL 596, had the highest laccase activity (703.3 U/l), and the maximum peroxidase activity of 22.6 U/l was shown by the strain MBFBL 684. Several tested strains (MBFBL 21, 638 and 662)... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Grifola frondosa; Exopolysaccharide; Laccase; Lignin degradation; Peroxidase. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822011000300031 |
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| Zhang,Tiehua; Zhang,Chunhong; Li,Shengyu; Zhang,Yanchun; Yang,Zhennai. |
| To analyze the exopolysaccharide (EPS) production by Streptococcus thermophilus ST1, cultures were cultivated in 10% (w/v) reconstituted skim milk under different growth conditions including various temperatures and pHs of growth medium, supplementation of the medium with various carbon sources (glucose, lactose, sucrose, galactose and fructose) and nitrogen source (whey protein concentrate, or WPC). The results showed that most EPS production by strain ST1 was obtained at a temperature (42°C) and pH (6.5) optimal for its growth. Supplementation of the skim milk medium with either carbohydrates or WPC increased both growth and polymer formation by different extents, with sucrose being most effective among the carbon sources tested. Under the optimal... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Exopolysaccharide; Streptococcus thermophilus ST1; Skim milk. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822011000400033 |
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| Registros recuperados: 27 | |
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