An Approach of Utilizing Water-Soluble Carbohydrates in Lignocellulose Feedstock for Promotion of Cellulosic l-Lactic Acid Production,Journal of Agricultural and Food Chemistry

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An Approach of Utilizing Water-Soluble Carbohydrates in Lignocellulose Feedstock for Promotion of Cellulosic l-Lactic Acid Production
Journal of Agricultural and Food Chemistry ( IF 5.7 ) Pub Date : 2018-09-12 00:00:00 , DOI: 10.1021/acs.jafc.8b03592
Xushen Han ₁ , Feng Hong ₂ , Gang Liu ₁ , Jie Bao ₁

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Agricultural lignocellulose biomass generally contains certain amounts of water-soluble carbohydrates (WSC) such as glucose, fructose, or sucrose. These sugars are generally degraded in pretreatment at high temperature or discharged with wastewater in a detoxification process. This study proposed an approach of utilizing frequently ignored water-soluble carbohydrates for promotion of cellulosic l-lactic acid production. A simple solid state fermentation was performed during a corn stover storage period to convert the sugars into l-lactic acid and then a dry biorefining technology was applied to convert cellulose and hemicellulose fractions into the same l-lactic acid product. The 5-hydroxymethylfurfural (HMF) formation in pretreatment was significantly reduced and the consequent biodetoxification time was shortened. l-Lactic acid production was increased from 130.2 g/L to 139.0 g/L, and the minimum l-lactic acid selling price was reduced by 5.9%. This study provided an important option of biorefinery processing technology for production of value added biochemicals.

中文翻译：

利用木质纤维素原料中的水溶性碳水化合物促进纤维素产生l-乳酸的方法

农业木质纤维素生物质通常包含一定量的水溶性碳水化合物（WSC），例如葡萄糖，果糖或蔗糖。这些糖通常在高温下进行预处理，或者在排毒过程中与废水一起排出。这项研究提出了一种利用经常被忽略的水溶性碳水化合物来促进纤维素1-乳酸生产的方法。在玉米秸秆储存期间进行简单的固态发酵，将糖转化为l-乳酸，然后应用干法生物精制技术将纤维素和半纤维素馏分转化为相同的l。-乳酸产物。预处理中的5-羟甲基糠醛（HMF）形成显着减少，因此缩短了生物排毒时间。l-乳酸产量从130.2 g / L增加到139.0 g / L，l-乳酸的最低销售价格降低了5.9％。这项研究为增值生化产品的生产提供了生物精炼加工技术的重要选择。

更新日期：2018-09-12

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