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Characterization of pectinase activity for enology from yeasts occurring in Argentine Bonarda grape BJM
Merín,María Gabriela; Martín,María Carolina; Rantsiou,Kalliopi; Cocolin,Luca; de Ambrosini,Vilma Inés Morata.
Pectinolytic enzymes are greatly important in winemaking due to their ability to degrade pectic polymers from grape, contributing to enhance process efficiency and wine quality. This study aimed to analyze the occurrence of pectinolytic yeasts during spontaneous fermentation of Argentine Bonarda grape, to select yeasts that produce extracellular pectinases and to characterize their pectinolytic activity under wine-like conditions. Isolated yeasts were grouped using PCR-DGGE and identified by partial sequencing of 26S rRNA gene. Isolates comprised 7 genera, with Aureobasidium pullulans as the most predominant pectinolytic species, followed by Rhodotorula dairenensis and Cryptococcus saitoi. No pectinolytic activity was detected among ascomycetous yeasts...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Aureobasidium pullulans; Cryptococcus saitoi; Pectinolytic activity; Rhodotorula dairenensis; Winemaking.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822015000300815
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Efficient production of pullulan by Aureobasidium pullulans grown on mixtures of potato starch hydrolysate and sucrose BJM
An,Chao; Ma,Sai-jian; Chang,Fan; Xue,Wen-jiao.
Abstract Pullulan is a natural exopolysaccharide with many useful characteristics. However, pullulan is more costly than other exopolysaccharides, which limits its effective application. The purpose of this study was to adopt a novel mixed-sugar strategy for maximizing pullulan production, mainly using potato starch hydrolysate as a low-cost substrate for liquid-state fermentation by Aureobasidium pullulans. Based on fermentation kinetics evaluation of pullulan production by A. pullulans 201253, the pullulan production rate of A. pullulans with mixtures of potato starch hydrolysate and sucrose (potato starch hydrolysate:sucrose = 80:20) was 0.212 h−1, which was significantly higher than those of potato starch hydrolysate alone (0.146 h−1) and mixtures of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Mixed sugar; Aureobasidium pullulans; Pullulan; Potato starch hydrolysate; Batch kinetics.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000100180
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Production of pullulan by a thermotolerant Aureobasidium pullulans strain in non-stirred fed batch fermentation process BJM
Singh,Ranjan; Gaur,Rajeeva; Tiwari,Soni; Gaur,Manogya Kumar.
Total 95 isolates of Aureobasidium pullulans were isolated from different flowers and leaves samples, out of which 11 thermotolerant strains produced pullulan. One thermotolerant non-melanin pullulan producing strain, designated as RG-5, produced highest pullulan (37.1±1.0 g/l) at 42ºC, pH 5.5 in 48h of incubation with 3% sucrose and 0.5% ammonium sulphate in a non-stirred fed batch fermentor of 6 liters capacity. The two liters of initial volume of fermentation medium was further fed with the 2 liters in two successive batches at 5 h interval into the fermentor. The sterile air was supplied only for 10h at the rate of 0.5 vvm.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Aureobasidium pullulans; Pullulan; Non-stirred fed-batch fermentation.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822012000300030
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Identificação e caracterização de Aureobasidium pullulans em sementes de mangaba (Hancornia speciosa Gomes) no cerrado. Infoteca-e
CHARCHAR, M. J. d'A.; ANJOS, J. R. N. dos; LEITE, R. G..
Tipo: Folders Palavras-chave: Fungal diseases; Indigenous organisms; Cerrado; Doença de Planta; Doença Fúngica; Fruta; Fungo; Hancornia Speciosa; Mangaba; Aureobasidium pullulans; Fungi; Fruits.
Ano: 2006 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/570153
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Improving Nutrition Utilization and Meat Quality of Broiler Chickens Through Solid-State Fermentation of Agricultural By-Products by Aureobasidium Pullulans Rev. Bras. Ciênc. Avic.
Lee,MT; Lai,LP; Lin,WC; Ciou,JY; Chang,SC; Yu,B; Lee,TT.
ABSTRACT A 35 d trial was conducted to evaluate the effects of dietary supplementation of co-fermented agricultural by-products, soybean hulls and Pleurotus eryngii stalk residue (PESR), with Aureobasidium pullulans on nutrients digestibility and meat quality in broilers fed on conventional corn-soybean meal basal diet. A total of 400 1-d-old Ross broilers were allotted to 4 dietary treatments with 4 replicate pens (25 birds per pen). Birds were fed the corn-soybean meal diets supplemented with 0% (CON), 0.5% fermented soybean hulls (0.5% FSBH), 0.5% fermented soybean hulls partially replaced with PESR (0.5% FSHP) and 1.0% FSHP. The broilers fed on the diet that contained fermented products had higher total tract apparent digestibility for hemicellulose...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Mushroom stalk residue; Soybean hull; Aureobasidium pullulans; Digestibility; Meat water holding capacity.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000400645
Registros recuperados: 5
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