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2022-12-13T02:22:45Z
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Bioconversion of bamboo grass culm hydrolyzate into xylitol by yeast Candida magnoliae
MIURA, MASAHIRO
MATSUMOTO, NAOYA
SEINO, KEISUKE
SHIMOTORI, YASUTAKA
NAKATANI, HISAYUKI
AOYAMA, MASAKAZU
open access
2015 c Editura Academiei Romane
Sasa senanensis
bamboo grass
hemicellulose hydrolyzate
xylitol
Candida magnoliae
A sugar solution containing 32 g dm-3 of xylose was prepared from the culm of Sasa senanensis by hydrolysis with 2%
sulfuric acid with a liquid-to-solid ratio of 5 (g g-1) at 120 °C for 1 h. During the acid hydrolysis, some byproducts were
generated, such as acetic acid, furfural and low molecular weight phenols, which inhibit bioconversion of xylose to
xylitol. Except for acetic acid, these inhibitors were successfully removed from the hydrolyzate by contacting with a
steam-activated charcoal (25 g dm-3 dose) for 1 h. Bioconversion of the detoxified hydrolyzate to xylitol by the yeast
Candida magnoliae was investigated under the microaerobic conditions. The oxygen transfer rate (OTR) varied from
12.6 to 15.1 mmol-O2 dm-3 h-1. The best fermentative performance of C. magnoliae in the culm hydrolyzate of S.
senanensis (xylitol yield of 0.55?0.60 g-xylitol g-xylose-1 and volumetric productivity of 0.82 g dm-3h-1) was obtained at
the OTR ranging 14.1?15.1 mmol-O2 dm-3 h-1.
Editura Academiei Romane
2015-09
eng
journal article
VoR
https://kitami-it.repo.nii.ac.jp/records/8486
Cellulose Chemistry and Technology
49
9-10
807
812
https://kitami-it.repo.nii.ac.jp/record/8486/files/p.807-812.pdf
application/pdf
121.8 kB
2017-01-12