Potential of Wheat Milling Byproducts to Produce Fermentable Sugars via Mild Ethanol–Alkaline Pretreatment,ACS Sustainable Chemistry & Engineering

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Potential of Wheat Milling Byproducts to Produce Fermentable Sugars via Mild Ethanol–Alkaline Pretreatment
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2021-03-02 , DOI: 10.1021/acssuschemeng.1c00248
Jikai Zhao ₁ , Xiaorong Wu ₂ , Donghai Wang ₁

Affiliation

In this work, the potential of milling byproducts for fermentable sugar production was investigated. Ethanol pretreatment coupled with a dilute sodium hydroxide (NaOH) catalyst for pretreatment of soft wheat shorts, hard wheat shorts, and hard wheat bran was conducted with NaOH pretreatment as the control. Enzymatic hydrolysis of integrated bran starch hydrolysate and pretreated biomass was performed to boost sugar concentration and yield. Compared to NaOH pretreatment, ethanol–NaOH pretreatment showed higher sugar recoveries (>85%). Mild pretreatment conditions (50% ethanol assisted with 0.08 mol/L NaOH at 150 °C for 20 min) resulted in almost neutral slurries without HMF and furfural formation, thus avoiding anticorrosion equipment investment. Integrating bran starch hydrolysate with ethanol–NaOH-pretreated biomass enhanced sugar concentration and yield. Milling byproducts that are rich in carbohydrates might have the potential for biochemical production using mild ethanol–alkaline pretreatment.

中文翻译：

小麦碾磨副产物通过轻度乙醇-碱预处理生产可发酵糖的潜力

在这项工作中，研究了研磨副产物可发酵糖生产的潜力。乙醇预处理与稀氢氧化钠（NaOH）催化剂相结合，用于以NaOH预处理为软质小麦短裤，硬质小麦短裤和硬质麦麸的预处理。对整合的麸皮淀粉水解产物和预处理的生物质进行酶促水解以提高糖浓度和产量。与NaOH预处理相比，乙醇-NaOH预处理显示出更高的糖回收率（> 85％）。温和的预处理条件（50％的乙醇在150°C的条件下用0.08 mol / L NaOH辅助20分钟）可产生几乎中性的浆液，而不会形成HMF和糠醛，从而避免了防腐设备的投资。将麸皮淀粉水解产物与乙醇-NaOH预处理过的生物质整合在一起，可提高糖浓度和产量。碾磨富含碳水化合物的副产物，使用温和的乙醇-碱预处理可能具有生化生产的潜力。

更新日期：2021-03-15

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