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首页> 外文期刊>Bioresource Technology: Biomass, Bioenergy, Biowastes, Conversion Technologies, Biotransformations, Production Technologies >Modeling growth and fermentation inhibition during bioethanol production using component profiles obtained by performing comprehensive targeted and non-targeted analyses
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Modeling growth and fermentation inhibition during bioethanol production using component profiles obtained by performing comprehensive targeted and non-targeted analyses

机译：使用通过进行综合靶向和非靶向分析获得的组分型材在生物乙醇生产过程中建模和发酵抑制

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摘要

Corn cob and corn stover hydrolysates are forms of lignocellulosic biomass that can be used in second generation bioethanol production and biorefinery processes. Growth and fermentation inhibitors generated during physicochemical and enzymatic hydrolysis decrease ethanol and biomaterial production during the subsequent biological processes. Here, estimates of growth and fermentation inhibition during bioethanol fermentation were made using component profiles of corn cobs and corn stover at different degrees of hydrolysis. The component profiles were acquired by non-targeted gas chromatography mass spectrometry and targeted high-performance liquid chromatography. Correlations between the comprehensive analysis results and yeast growth and ethanol production were modeled very accurately by partial-least-squares regression analysis. Acetate, apocynin, butyrovanillone, furfural, furyl hydroxymethyl ketone, m-methoxyacetophenone, palmitic acid, syringaldehyde, and xylose, were compounds with very variable importance in projection values and had negative correlation coefficients in the model. In fact, methoxyacetophenone, apocynin, and syringaldehyde inhibited fermentation more than furfural in equivalent concentration.
机译：玉米棒和玉米秸秆水解产物是木质纤维素生物质的形式，可用于第二代生物乙醇生产和生物填充方法。在物理化学和酶水解期间产生的生长和发酵抑制剂在随后的生物过程中降低乙醇和生物材料生产。这里，使用不同程度的水解的玉米棒和玉米秸秆的组分曲线制备生长和发酵抑制的估计。通过非靶向气相色谱质谱和靶向高效液相色谱法获取组分型材。综合分析结果和酵母生长与乙醇产量的相关性通过部分最小二乘回归分析非常准确地模拟。乙酸酯，呼吸皂苷蛋白，丁酮，糠醛，甲氧基甲基酮，M-甲氧基酮酮，棕榈酸，辛酸，辛酸，单甲醛和木糖，是在投影值中具有非常可变的重要性的化合物，并且模型中具有负相关系数。实际上，甲氧基乙酮，呼吸皂苷蛋白和辛酸抑制的糠醛在等效浓度的糠醛上抑制了发酵。

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