초록
<P><B>Highlights</B></P><P>► A <I>Candida athensensis</I> strain SB18 was used for xylitol production. ► It completely assimilated 300g/L <SMALL>D</SMALL>-xylose and produced 256.5g/L xylitol. ► It converted horticultural waste hemicellulosic hydrolysate efficiently to xylitol. ► It was xylose-tolerant and produced xylitol in high titer and yield.</P> <P><B>Abstract</B></P><P>This paper describes the production of xylitol from <SMALL>D</SMALL>-xylose and horticultural waste hemicellulosic hydrolysate by a new strain of <I>Candida athensensis</I> SB18. Strain SB18 completely consumed 250 and 300gL<SUP>−1</SUP> <SMALL>D</SMALL>-xylose and successful converted it to xylitol in the respective yield of 0.83 and 0.87gg<SUP>−1</SUP>, resulting in 207.8 and 256.5gL<SUP>−1</SUP> of xylitol, respectively. The respective volumetric productivity were 1.15 and 0.97gL<SUP>−1</SUP>h<SUP>−1</SUP>. Approximately 100.1gL<SUP>−1</SUP> of xylitol was obtained from the bioconversion of detoxified horticultural waste hemicellulosic hydrolysate using strain SB18. The yield and productivity were 0.81gg<SUP>−1</SUP> xylose and 0.98gL<SUP>−1</SUP>h<SUP>−1</SUP>, respectively. Strain <I>C. athensensis</I> SB18 was able to completely utilize glucose, mannose, xylose and partially arabinose. This work demonstrates that stain <I>C. athensensis</I> SB18 is a promising strain for high-titer and high-yield xylitol production and it has great potential in bioconversion of hemicellulosic hydrolysate.</P>