Effect of high temperature pretreatment on xylanase and cellulase hydrolysis of bamboo

Cellulase and xylanase were applied to hydrolyze bamboo. High temperature treatment was launched to treat bamboo prior to enzymatic hydrolysis. Results indicated that bamboo with a high temperature pretreatment caused a more reduction of sugar yield. It is concluded that the high temperature pretreatment is the most effective method to strengthen enzyme hydrolysis towards bamboo.

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High-temperature heating and microwave pretreatments: A new light in bamboo's enzymatic hydrolysis

Thermal Science ◽

10.2298/tsci1603999f ◽

2016 ◽

Vol 20 (3) ◽

pp. 999-1002 ◽

Cited By ~ 1

Author(s):

Jiajia Fu ◽

Yu Li ◽

Qun Zhang ◽

Shen Shen ◽

Xiao-Ying Du ◽

...

Keyword(s):

High Temperature ◽

Enzymatic Hydrolysis ◽

Protein Adsorption ◽

Reducing Sugar ◽

Sugar Yield ◽

X Ray ◽

Temperature Heating ◽

Hydrolysis Of ◽

High Temperature Heating

A combined technology of high-temperature heating and microwave is proposed to treat bamboo substrates prior to enzymatic hydrolysis to overcome the limits of ei- ther technology. The combined technology helps to promote the reducing sugar yield from enzymatic hydrolysis of bamboo. The protein adsorption test indicated that more enzyme proteins could adsorb on the surface of bamboo pretreated by the combined technology. Thus, the possibility of enzymes to hydrolyze bamboo increased. Meanwhile, X-ray diffractometry tested revealed that the combined technology benefited the removal of non-cellulosic substances from bamboo and resulted in a higher crystallinity.

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The effect of Sibunit graphitization on the stability of Ru/(Pt, Pd)/Sibunit catalysts in an oxidizing atmosphere at elevated temperatures

Kataliz v promyshlennosti ◽

10.18412/1816-0387-2021-1-2-55-61 ◽

2021 ◽

Vol 1 (1-2) ◽

pp. 55-61

Author(s):

V. A. Borisov ◽

K. N. Iost ◽

V. L. Temerev ◽

Yu. V. Surovikin ◽

A. R. Osipov ◽

...

Keyword(s):

High Temperature ◽

Elevated Temperatures ◽

Analysis Data ◽

Temperature Treatment ◽

Significant Loss ◽

Ruthenium Catalysts ◽

High Temperature Treatment ◽

Mean Size ◽

Temperature Pretreatment ◽

The Stability

The effect of high-temperature treatment on the thermal stability of a graphitic carbon material Sibunit in an oxidizing medium was studied in dependence on the presence of active component – Pt, Pd or Ru. According to thermal analysis data, a high-temperature pretreatment of Sibunit increases the onset temperature of carbon oxidation. It was found that holding of the Ru/Sibunit samples for 4 h in a nitrogen: air (1 : 1) mixture at a temperature of 400 °С resulted in a partial destruction of the pyrocarbon matrix of Sibunit and increased the mean size of Ru particles. It was demonstrated that ruthenium catalysts can efficiently oxidize CO at a temperature not higher than 200 °С and withstand overheats up to 400 °С without a significant loss in activity.

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Insights into high temperature pretreatment on cellulase processing of bamboo

Thermal Science ◽

10.2298/tsci1205524f ◽

2012 ◽

Vol 16 (5) ◽

pp. 1524-1528 ◽

Cited By ~ 2

Author(s):

Li-Na Fu ◽

Mei-Ying Tan ◽

Ru-Kun Shi ◽

Hong-Bo Wang ◽

Jia-Jia Fu

Keyword(s):

Molecular Weight ◽

High Temperature ◽

High Molecular Weight ◽

Lignin Degradation ◽

Reaction System ◽

Active Role ◽

Total Reaction ◽

Temperature Pretreatment ◽

Hydrolysis Of ◽

Cellulase Hydrolysis

Bamboo processing was performed with commercial cellulase. The properties of cellulase and the effect of high temperature pretreatment on cellulase hydrolysis of bamboo were investigated. Results indicated that cellulase hydrolysis performed fast and dramatically within 30 minutes, and then gradually reached its balance. It was found that pretreatment played an active role in cellulase processing, which enhanced the saccharification of bamboo and benefited high-molecular-weight lignin degradation and removal. Additionally, a better performance of bamboo processing was achieved under the cellulase concentration of 15IU in total reaction system of 100 ml at 50?C, pH 4.8, together with the high temperature pretreatment of 120?C for 15 minutes.

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