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'Candida guillierm ondii' in keywords
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1997 (1)
1996 (1)
1Author    S. S. Silva3, A. Quesada-Chantob, M. VitolocRequires cookie*
 Title    Upstream Parameters Affecting the Cell Growth and Xylitol Production by Candida guilliermondii FTI 20037  
 Abstract    The effects of yeast extract (0 -1 0 g/1), methanol (0 -1 0 % v/v), acetic acid (0-1.0 g/1), furfu­ ral (0— 0.5 g/1), glucose (0 -3 0 g/1), inoculum age (15 -7 0 h) and product concentration (18-230 g/1) on the xylose-xylitol conversion by Candida guillierm ondii FTI 20037 were studied. The xylitol specific productivity increased about 35% at a yeast extract concentration of 1.0 g/1, whereas glucose showed a strong inhibitory effect on the xylitol production and a stimulating effect on the growth of C. guillierm ondii. M ethanol, acetic acid and furfural under the employed concentrations did not show any positive effect neither on the growth or on the xylose-xylitol conversion by the yeast. The inoculum age showed a strong influence on xylitol formation and the best fermentative param eters were attained using a 40-h inoculum age. A xylitol concentration in the ferm entation medium higher than 80 g/1 inhibited m ark­ edly the xylitol productivity by the yeast C. guilliermondii. 
  Reference    Z. Naturforsch. 52c, 359—363 (1997); received D ecem ber 11 1996/ 
  Published    1997 
  Keywords    Xylitol, Xylose Fermentation, Candida guillierm ondii, Cultivation Parameters 
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 TEI-XML for    default:Reihe_C/52/ZNC-1997-52c-0359.pdf 
 Identifier    ZNC-1997-52c-0359 
 Volume    52 
2Author    M. Molwitz3, S. S. Silvab, J. D. Ribeiro, I.C R Oberto, M.G A Felipe, A.M R Pratab, I. M. MancilhabRequires cookie*
 Title    Aspects of the Cell Growth of Candida guilliermondii in Sugar Cane Bagasse Hydrolysate  
 Abstract    In this work the behavior of the growth of Candida guillierm ondii FTI 20037 in sugar cane bagasse hemicellulosic hydrolysate on various oxygen transfer rates was investigated. The yeast was able to grow and produced xylitol at different performence levels. At 1.0 vvm (volume of air per volum e of medium per minute) the highest growth with 24.4 g/1 was observed, but no xylitol was produced. At aeration rate of 0.5 vvm the growth was lower, but therefore slight amounts of xylitol (xylitol yield factor -y p/s = 0.15 g/g) were observed. The lowest cell concentration (10.7 g/1) and the highest xylitol yield (Y p/s = 0.46 g/g) was observed when aeration was changed from 0.5 vvm to 0.05 vvm after 14 h. 
  Reference    Z. Naturforsch. 51c, 404 (1996); received October 3 0 /December 20. 1995 
  Published    1996 
  Keywords    Candida guillierm ondii, Oxygen, Sugar Cane Bagasse, Xylose, Xylitol Fermentation 
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 TEI-XML for    default:Reihe_C/51/ZNC-1996-51c-0404.pdf 
 Identifier    ZNC-1996-51c-0404 
 Volume    51