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Characterization of the antiyeast compound and probiotic properties of a starter Lactobacillus plantarum DW3 for possible use in fermented plant beverages Electron. J. Biotechnol.
Kantachote,Duangporn; Prachyakij,Pakorn; Charernjiratrakul,Wilawan; Ongsakul,Metta; Duangjitcharoen,Yodsawee; Chaiyasut,Chaiyavat; Nitoda,Teruhiko; Kanzaki,Hiroshi.
Lactobacillus plantarum DW3 produced antifungal compounds that inhibited the growth of Rhodotorula mucilaginosa DKA, contaminating yeast in fermented plant beverages (FPBs) and various potential human pathogens. Phenyllactic acid (PLA) identified by gas chromatography- mass spectrometry (GC-MS) was produced at 31 mg/L PLA in MRS medium and 5 mg/ml inhibited growth of the target yeast in vitro by 90%. Other inhibitors were also present but not specifically identified. Results of in vitro tests showed that DW3 also had probiotic properties as it survived various human biological barriers resistance to pH 3, bile salts, growth without vitamin B12 and the presence and absence of oxygen. Its inhibitory effect against food borne pathogenic bacteria and spoilage...
Tipo: Journal article Palavras-chave: Fermented plant beverage; Lactobacillus plantarum; Phenyllactic acid; Probiotics; Rhodotorula mucilaginosa; Weight control.
Ano: 2010 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582010000500002
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Genetic analysis of D-xylose metabolism by endophytic yeast strains of Rhodotorula graminis and Rhodotorula mucilaginosa Genet. Mol. Biol.
Xu,Ping; Bura,Renata; Doty,Sharon L..
Two novel endophytic yeast strains, WP1 and PTD3, isolated from within the stems of poplar (Populus) trees, were genetically characterized with respect to their xylose metabolism genes. These two strains, belonging to the species Rhodotorula graminis and R. mucilaginosa, respectively, utilize both hexose and pentose sugars, including the common plant pentose sugar, D-xylose. The xylose reductase (XYL1) and xylitol dehydrogenase (XYL2) genes were cloned and characterized. The derived amino acid sequences of xylose reductase (XR) and xylose dehydrogenase (XDH) were 32%~41% homologous to those of Pichia stipitis and Candida. spp., two species known to utilize xylose. The derived XR and XDH sequences of WP1 and PTD3 had higher homology (73% and 69% identity)...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Rhodotorula graminis; Rhodotorula mucilaginosa; D-xylose metabolism; Xylitol; Xylitol dehydrogenase; Xylose reductase.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572011000300018
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Oxidative Stress, Chromium-Resistance and Uptake by Fungi: Isolated from Industrial Wastewater BABT
Elahi,Amina; Rehman,Abdul.
ABSTRACT Trichosporon asahii and Rhodotorula mucilaginosa isolated from wastewater effluents were identified as chromium-resistant yeasts. Cr(VI) concentrations at 8 mM and 6 mM were inhibitory for R. mucilaginosa and T. asahii. Remarkably elevated GSH (69.88 ± 10.01) and GSSG (11.24 ± 0.96) was observed under metal stress in T. asahii as compared to R. mucilaginosa GSH (18.95 ± 3.19) and GSSG (3.7 ± 2.74) mM g-1 8 level. Statistical analysis revealed significantly higher GSH/GSSG ratio in both strains. NPSH (29.84 ± 0.54) level in T. asahii was much higher than in R. mucilaginosa (6.05 ± 0.24). Chromate reductase (ChR) was assayed and its activity was optimum at 50°C (pH 6) in T. asahii while R. mucilaginosa showed higher activity at 30°C (pH 7). Activity...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Trichosporon asahii; Rhodotorula mucilaginosa; Wastewater; Resistance; Bioaccumulation.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100452
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Statistical optimisation of cell growth and carotenoid production by rhodotorula mucilaginosa. Repositório Alice
MALDONADE, I. R.; RODRIGUEZ-AMAYA, D. B.; SCAMPARINI, A. R. P..
Tipo: Artigo de periódico Palavras-chave: Rhodotorula mucilaginosa; Carotenoide; Produção.
Ano: 2012 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/940145
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Statistical optimisation of cell growth and carotenoid production by Rhodotorula mucilaginosa BJM
Maldonade,Iriani R.; Rodriguez-Amaya,Delia B.; Scamparini,Adilma R. P..
Sequential statistical methods were used to maximise carotenoid production by a strain of Rhodotorula mucilaginosa, isolated from the Brazilian ecosystem. Initially, a factorial 2(5-1) experimental design was used, and the variables were pH and the levels of glucose, yeast extract, MgSO4.7H2O and KH2PO4. The nitrogen source (yeast extract) was the most important variable in enhancing carotenoid production; MgSO4.7H2O and KH2PO4 had a negative influence. The initial pH had no significant effect on carotenoid and cell productions. We further investigated the effects of glucose and yeast extract effects, using a second-order central composite design (CCD) to optimise carotenoid production, which was adequately approximated with a full quadratic equation...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fermentation; Torulene; Yeast; Response surface design; Rhodotorula mucilaginosa.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822012000100012
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Uptake of free and complexed silver ions by different strains of Rhodotorula mucilaginosa BJM
Gomes,Newton C.M.; Rosa,Carlos A.; Pimentel,Patrícia F.; Mendonça-Hagler,Leda C.S..
Five strains of Rhodotorula mucilaginosa were tested for the ability to accumulate free and complexed silver ions by metabolism-dependent and -independent processes. The ability to take up Ag+ was observed in both live and dead biomass, whereas silver dicyanide [Ag (CN)2-] uptake was strictly glucose dependent. In contrast to Ag (CN)2-, glucose addition inhibited by 16 to 25% the Ag+ uptake rate of living UFMG - Y02, Y27, and Y35 cells, while strains CBS 316 and UFMG-Y01 showed an improved uptake rate of about 115% and 13%, respectively. The Langmuir sorption model was used to evaluate the silver sorption capability of the R. mucilaginosa strains. The calculated q max value suggested that R. mucilaginosa strains UFMG-Y27 had the highest loading capacity....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bioaccumulation; Biosorption; Rhodotorula mucilaginosa; Silver.
Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822002000100013
Registros recuperados: 6
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