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Making Sustainable Biofuels and Sunscreen from Corncobs To Introduce Students to Integrated Biorefinery Concepts and Techniques
Journal of Chemical Education ( IF 2.5 ) Pub Date : 2018-06-14 00:00:00 , DOI: 10.1021/acs.jchemed.7b00819 Hua Zhou 1 , Wang Zhan 1 , Liuyang Wang 1 , Lijun Guo 1 , Yun Liu 1
Journal of Chemical Education ( IF 2.5 ) Pub Date : 2018-06-14 00:00:00 , DOI: 10.1021/acs.jchemed.7b00819 Hua Zhou 1 , Wang Zhan 1 , Liuyang Wang 1 , Lijun Guo 1 , Yun Liu 1
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To inspire upper-division undergraduate students to gain a deeper understanding of biorefinery, an experiment related to biofuels and lignin-based sunscreen products from corncob was performed in multiple offerings of a summer-semester class. Specifically, corncobs were pretreated with 1% H2SO4 to obtain hemicellulose hydrolysates, which were detoxified, and followed with oleaginous yeast fermentation to yield microbial lipids. The microbial lipids were chemically transesterified into biodiesel in situ by an alkali catalyst. Subsequently, dilute acid-pretreated corncob residue was enzymatically saccharified to release glucose for ethanol production by separation hydrolysis and fermentation. Finally, the resultant lignin from the cellulosic ethanol production was valorized to make sunscreen. The main objectives of this work are to introduce students to integrated biorefinery concepts and techniques so that they can learn how to obtain added-value products from waste materials and to evoke students’ awareness of environmental issues.
中文翻译：
从玉米芯制作可持续的生物燃料和防晒霜，以向学生介绍综合的生物精炼概念和技术
为了激发高年级本科生对生物精炼厂有更深入的了解，在暑期班的多种课程中进行了一项与生物燃料和玉米芯木质素防晒产品相关的实验。具体而言，玉米芯用1％H 2 SO 4预处理获得半纤维素水解产物，将其解毒，然后进行油质酵母发酵以产生微生物脂质。通过碱性催化剂将微生物脂质原位化学酯交换为生物柴油。随后，将稀酸预处理的玉米芯残留物酶促糖化，以释放葡萄糖，通过分离水解和发酵来生产乙醇。最后，将纤维素乙醇生产中产生的木质素进行增值处理以制成防晒霜。这项工作的主要目的是向学生介绍综合的生物精炼概念和技术，以便他们可以学习如何从废料中获得增值产品，并唤起学生对环境问题的认识。
更新日期：2018-06-14
中文翻译：
从玉米芯制作可持续的生物燃料和防晒霜，以向学生介绍综合的生物精炼概念和技术
为了激发高年级本科生对生物精炼厂有更深入的了解，在暑期班的多种课程中进行了一项与生物燃料和玉米芯木质素防晒产品相关的实验。具体而言，玉米芯用1％H 2 SO 4预处理获得半纤维素水解产物，将其解毒，然后进行油质酵母发酵以产生微生物脂质。通过碱性催化剂将微生物脂质原位化学酯交换为生物柴油。随后，将稀酸预处理的玉米芯残留物酶促糖化，以释放葡萄糖，通过分离水解和发酵来生产乙醇。最后，将纤维素乙醇生产中产生的木质素进行增值处理以制成防晒霜。这项工作的主要目的是向学生介绍综合的生物精炼概念和技术，以便他们可以学习如何从废料中获得增值产品，并唤起学生对环境问题的认识。
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