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首页> 外文期刊>Biotechnology Progress >Butanol Production from Sweet Sorghum Bagasse with High Solids Content: Part I-Comparison of Liquid Hot Water Pretreatment with Dilute Sulfuric Acid
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Butanol Production from Sweet Sorghum Bagasse with High Solids Content: Part I-Comparison of Liquid Hot Water Pretreatment with Dilute Sulfuric Acid

机译：用高固体含量的甜高粱甘蔗渣生产：第一部分 - 液体热水预处理与稀硫酸的一部分

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In these studies, we pretreated sweet sorghum bagasse (SSB) using liquid hot water (LHW) or dilute H2SO4 (2 g L-1) at 190 degrees C for zero min (as soon as temperature reached 190 degrees C, cooling was started) to reduce generation of sugar degradation fermentation inhibiting products such as furfural and hydroxymethyl furfural (HMF). The solids loading were 250-300 g L-1. This was followed by enzymatic hydrolysis. After hydrolysis, 89.0 g L-1 sugars, 7.60 g L-1 acetic acid, 0.33 g L-1 furfural, and 0.07 g L-1 HMF were released. This pretreatment and hydrolysis resulted in the release of 57.9% sugars. This was followed by second hydrolysis of the fibrous biomass which resulted in the release of 43.64 g L-1 additional sugars, 2.40 g L-1 acetic acid, zero g L-1 furfural, and zero g L-1 HMF. In both the hydrolyzates, 86.3% sugars present in SSB were released. Fermentation of the hydrolyzate I resulted in poor acetone-butanol-ethanol (ABE) fermentation. However, fermentation of the hydrolyzate II was successful and produced 13.43 g L-1 ABE of which butanol was the main product. Use of 2 g L-1 H2SO4 as a pretreatment medium followed by enzymatic hydrolysis resulted in the release of 100.6-93.8% (w/w) sugars from 250 to 300 g L-1 SSB, respectively. LHW or dilute H2SO4 were used to economize production of cellulosic sugars from SSB. (C) 2018 American Institute of Chemical Engineers
机译：在这些研究中，我们使用液体热水（LHW）或在190℃下使用液体热水（LHW）或稀释H2SO4（2g L-1）进行甜高粱（2g L-1）进行零分钟（一旦温度达到190℃，冷却）减少糖降解发酵抑制抑制产品，如糠醛和羟甲基糠醛（HMF）。固体载荷为250-300g L-1。然后是酶水解。水解后，89.0g L-1糖，7.60g L-1乙酸，0.33g L-1糠醛和0.07g L-1 HMF释放。这种预处理和水解导致释放57.9％的糖。接下来是纤维生物量的第二种水解，导致释放43.64g L-1另外的糖，2.40g L-1乙酸，零G1-1糠醛，零G 1 -1 HMF。在水解产物中，SSB中存在的86.3％糖被释放。水解产物的发酵导致丙酮 - 丁醇 - 乙醇（ABE）发酵差。然而，水解产物II的发酵成功并产生13.43g L-1 ABE，其中丁醇是主要产物。将2g L-1 H 2 SO 4用作预处理介质，然后用​​酶水解导致释放100.6-93.8％（w / w）糖，分别为250-300g L-1 SSB。 LHW或稀释H2SO4用于节约来自SSB的纤维素糖的产生。 （c）2018美国化学工程研究所

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