Pretreatment of corncob residues in organic solvent and its effect on enzymatic digestibility

岳军

您当前的位置：

首页 >

文章列表页 >

Pretreatment of corncob residues in organic solvent and its effect on enzymatic digestibility

更新时间：2025-12-10

- Pretreatment of corncob residues in organic solvent and its effect on enzymatic digestibility
- CIESC Journal Issue 11, (2011)
- 作者机构：
  
  山东大学微生物技术国家重点实验室
- 作者简介：
- 基金信息：
- DOI：
  CLC： 0.3969/j.issn.0438-1157.2011.11.040
- Online First：05 November 2011，
  
  Published：05 November 2011
- 稿件说明：
移动端阅览
岳军. Pretreatment of corncob residues in organic solvent and its effect on enzymatic digestibility[J]. CIESC Journal, 2011, (11).
DOI：

岳军. Pretreatment of corncob residues in organic solvent and its effect on enzymatic digestibility[J]. CIESC Journal, 2011, (11). DOI：

摘要

木糖渣是玉米芯经稀酸处理提取木糖后的残余物，一般作为燃料焚烧以提供部分热能。由于其含有丰富的纤维素组分，故可通过生物转化来生产多种化工产品，但残渣中大量木素的存在严重抑制了纤维素酶的水解效率。采用一些有机溶剂预处理可将部分木素溶出，因而可改善物料的酶解性能。采用乙醇对木糖渣进行预处理，研究了预处理条件（如温度、时间、固液比等）对木糖渣化学组分和纤维素酶解转化率的影响，并与玉米秸秆和玉米芯等进行了对比。结果表明预处理降低了木糖渣的木素含量，在固液（质量/体积）比1︰8、处理液中乙醇浓度50%（体积）、预处理温度210℃、预处理时间60 min时，木素脱除率为53.26%，预处理后木糖渣在酶解72 h时的纤维素转化率达到84.42%，比预处理前提高 14.58%。研究还发现，与木糖渣相比，有机溶剂乙醇更适合用于玉米芯和玉米秸秆酶解前的预处理。

Abstract

Solid residues from dilute acid pretreatment process of corncob may be used to produce liquor fuels and chemicals by bioconversion because of its high cellulose content，but its high lignin content leads to decrease of cellulose enzymolysis efficiency. The digestibility of enzyme can be improved by removal of lignin in lignocelluloses materials with some organic solvent. In this paper

pretreatment of corncob residues was carried out in ethanol solution and effect of process parameters (pretreatment temperature and time，ethanol concentration，ratio of solid to liquid）on chemical components and enzymatic digestibility was studied. The results showed lignin of 53. 26% could be removed under pretreatment conditions of ethanol concentration 50%

210℃

ratio of solid to liquid 1∶8 and 60 min

and the conversion of cellulose to glucose increased from 69.84% to 84.42%. Compared with corncob residues

the pretreatment process was more effective for corn stover and corncob to remove lignin and increase enzymolysis efficiency of cellulose.

关键词

Keywords

references

Views

1078

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Progress of solar photo-thermo-catalysis for ammonia synthesis and decomposition under mild conditions

Effect of belt structure design on the vulcanization characteristics of all-steel radial tires

Study on flash evaporation characteristics as well as thermodynamic variation performance in liquid hydrogen tank during on-orbit venting

Experimental study of heat transfer enhancement by pressure waves in cross flow tube bundles

Thermo-oxidative degradation characteristics of TPT backsheet from end-of-life photovoltaic modules

Related Author

No data

Related Institution

No data

⁰