Improvement in the productivity of xylooligosaccharides from waste medium after mushroom cultivation by hydrothermal treatment with suitable pretreatment.
The effective xylooligosaccharides (XOs) production from the waste medium after mushroom cultivation (WM) was investigated. The WM contains rich nutrients (protein, etc.) which induce Maillard reaction with reducing sugars under hydrothermal conditions. To improve the productivity of XOs, the suitable pretreatment combined with washing and grinding was investigated, and subsequently hydrothermal treatment was demonstrated with batch type and continuous flow type reactor. The washing pretreatment with hot water of 60 degrees C was effective to remove nutrients from the WM, and it led to prevent brownish discoloration on the hydrothermal treatment. On the basis of experimental data, industrial XOs production processes consisting of the pretreatment, hydrothermal treatment and purification step was designed. During the designed process, 2.3 kg-dry of the purified XOs was produced from 30 kg-wet of the WM (15% yield as dry basis weight). Theoretical yield of XOs attained to 48% as xylan weight in the WM.
Sato
Nobuaki
N
Department of Chemistry and Material Engineering, Faculty of Engineering, Shinshu University, 4-17-1 Wakasato, Nagano 380-8553, Japan.
Shinji
Kazunori
K
Mizuno
Masahiro
M
Nozaki
Kouichi
K
Suzuki
Masayuki
M
Makishima
Satoshi
S
Shiroishi
Masahiro
M
Onoda
Takeru
T
Takahashi
Fumihiro
F
Kanda
Takahisa
T
Amano
Yoshihiko
Y
D000363:Agaricales / Q000737:chemistry* / Q000254:growth & development*; D000383:Agriculture / Q000379:methods*; D003470:Culture Media / Q000737:chemistry*; D006358:Hot Temperature; D007220:Industrial Waste / Q000517:prevention & control*; D009844:Oligosaccharides / Q000737:chemistry* / Q000302:isolation & purification*; D014867:Water / Q000737:chemistry*
D003470:Culture Media; D007220:Industrial Waste; D009844:Oligosaccharides; D014867:Water