Xylitol Production from Wood Hydrolyzates by Entrapped Debaryomyces hansenii and Candida guilliermondii Cells

1999 ◽  
Vol 81 (2) ◽  
pp. 119-130 ◽  
Author(s):  
Jose Manuel Domínguez ◽  
Jose Manuel Cruz ◽  
Enrique Roca ◽  
Herminia Domínguez ◽  
Juan Carlos Parajó
Keyword(s):  
Debaryomyces Hansenii ◽  
Candida Guilliermondii ◽  
Xylitol Production

scholarly journals Xylitol production by Debaryomyces hansenii and Candida guilliermondii from rapeseed straw hemicellulosic hydrolysate

2018 ◽  
Vol 247 ◽  
pp. 736-743 ◽  
Author(s):  
Juan Carlos López-Linares ◽  
Inmaculada Romero ◽  
Cristobal Cara ◽  
Eulogio Castro ◽  
Solange I. Mussatto
Keyword(s):  
Debaryomyces Hansenii ◽  
Candida Guilliermondii ◽  
Xylitol Production ◽  
Rapeseed Straw ◽  
Hemicellulosic Hydrolysate

scholarly journals Biodiversity of yeasts from Illinois maize

1997 ◽  
Vol 43 (4) ◽  
pp. 362-367 ◽  
Author(s):  
M. J. R. Nout ◽  
C. E. Platis ◽  
D. T. Wicklow
Keyword(s):  
Filamentous Fungi ◽  
Debaryomyces Hansenii ◽  
Candida Guilliermondii ◽  
Illinois River ◽  
Trichosporon Cutaneum ◽  
Cryptococcus Albidus ◽  
Candida Shehatae ◽  
Pichia Membranifaciens ◽  
Killer Yeasts ◽  
Candida Zeylanoides

Microflora in wound sites of preharvest maize (including bacteria, yeasts, and filamentous fungi) may play a role in attracting insects to maize plants and may also interact with growth and mycotoxin production by filamentous fungi. As little data are available about the yeasts occurring on maize from the U.S. corn belt, samples of milled maize from experimental plantings at the University of Illinois River Valley Sand Field were analyzed. Yeast counts showed slight yearly fluctuation and varied between 3.60 and 5.88 (log cfu/g maize). The majority of the yeasts were Candida guilliermondii (approximately 55%), Candida zeylanoides (24 %), Candida shehatae (11%), and Debaryomyces hansenii (3%). Also present were Trichosporon cutaneum, Cryptococcus albidus var. aerius, and Pichia membranifaciens. The occurrence of killer yeasts was also evaluated. Killer yeasts were detected in maize for the first time and were identified as Trichosporon cutaneum and Candida zeylanoides. These were able to kill some representative yeasts isolated from maize, including Candida guilliermondii, Candida shehatae, and Cryptococcus albidus var. aerius. Other maize yeasts (Candida zeylanoides, Debaryomyces hansenii, Pichia membranifaciens) were not affected. The majority of yeasts found on maize were unable to ferment its major sugars, i.e., sucrose and maltose. Some (e.g., Candida zeylanoides) were not even able to assimilate these sugars. The importance of these properties in relation to insect attraction to preharvest ears of maize is discussed.Key words: corn, maize, yeast, killer.

Use of Immobilized Candida Cells on Xylitol Production from Sugarcane Bagasse

2000 ◽  
Vol 55 (3-4) ◽  
pp. 213-217 ◽  
Author(s):  
Walter de Carvalho ◽  
Silvio Silvério da Silva ◽  
Michele Vitolo ◽  
Ismael Maciel de Mancilha
Keyword(s):  
Sugarcane Bagasse ◽  
Immobilized Cells ◽  
Alginate Beads ◽  
Candida Guilliermondii ◽  
Volumetric Productivity ◽  
Xylitol Production ◽  
Experimental Conditions ◽  
Work Volume ◽  
Yield Factor ◽  
Ca Alginate

Abstract In this study we used the yeast Candida guilliermondii FTI 20037 immobilized by entrapment in Ca-alginate beads (2 .5 -3 mm diameter) for xylitol production from concentrated sugarcane bagasse hemicellulosic hydrolysate in a repeated batch system. The fermentation runs were carried out in 125- and 250-ml Erlenmeyer flasks placed in an orbital shaker at 30 °C and 200 rpm during 72 h, keeping constant the proportion between work volume and flask total volume. According to the results, cell viability was substantially high (98%) in all fermentative cycles. The values of parameters xylitol yield and volumetric productivity increased significantly with the reutilization of the immobilized biocatalysts. The highest values of xylitol final concentration (11.05 g/1), yield factor (0.47 gig) and volumetric productivity (0.22 g/lh) were obtained in 250-ml Erlenmeyer flasks containing 80 ml of medium plus 20 mi of immobilized biocatalysts. The support used in this study (Ca-alginate) presented stability in the experimental conditions used. The results show that the use of immobilized cells is a promising approach for increasing the xylitol production rates.

Continuous Xylitol Production from Synthetic Xylose Solutions by Candida guilliermondii: Influence of pH and Temperature

2003 ◽  
Vol 3 (4) ◽  
pp. 193-198 ◽  
Author(s):  
A. Converti ◽  
P. Torre ◽  
E. De Luca ◽  
P. Perego ◽  
M. Del Borghi ◽  
...  
Keyword(s):  
Candida Guilliermondii ◽  
Xylitol Production ◽  
Influence Of Ph

Enhanced Xylitol Production by Precultivation of Candida guilliermondii Cells in Sugarcane Bagasse Hemicellulosic Hydrolysate

2006 ◽  
Vol 53 (1) ◽  
pp. 53-59 ◽  
Author(s):  
Rita C.L.B. Rodrigues ◽  
Luciane Sene ◽  
Gilvane S. Matos ◽  
Inês C. Roberto ◽  
Adalberto Pessoa ◽  
...  
Keyword(s):  
Sugarcane Bagasse ◽  
Candida Guilliermondii ◽  
Xylitol Production ◽  
Hemicellulosic Hydrolysate
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