生物化学中厌氧消化代谢途径的教学实践

Anaerobic digestion pathways in biochemistry: a teaching practice

摘要:

厌氧消化是乳酸和乙醇发酵之外的另一条重要的无氧分解代谢途径，对促进资源高效利用、维持生态平衡、优化能源结构、缓解能源危机、推动实施“双碳”战略都具有重要意义。如此重要的代谢过程在大学生物化学课程教材和教学中没有涉及，使得教学体系不完整，亟需教学改革。厌氧消化过程涉及的反应众多，代谢途径复杂，为了让学生全面了解这一过程，教师通过查阅大量文献，将厌氧消化的主要反应途径归纳成图，较为完整地展现厌氧消化代谢过程，并通过BOPPPS教学模式融入课堂教学中。以代谢途径全图的形式直观展示分散冗杂的代谢过程，可以帮助学生构建厌氧消化代谢的系统框架，有助其丰富代谢知识体系，达到了良好的教学效果。本文介绍了厌氧消化代谢途径的内容及教学过程的设计，为生物化学、环境工程微生物学、新能源工程等课程教材的修订及相关课堂教学改革提供参考和借鉴。

Abstract:

Anaerobic digestion is another important anaerobic catabolism pathway besides lactic acid and ethanol fermentation, which is of great significance for recycling resources, maintaining the ecological balance, optimizing the energy structure, alleviating the energy crisis, and promoting the implementation of the “Carbon Peaking and Carbon Neutrality” strategy. However, such an important metabolic process has not been involved in the current textbooks and teaching of biochemistry courses, making the teaching system incomplete. The anaerobic digestion process involves many reactions and complex metabolic pathways. In order to improve the students' understanding to this process, we created a full chart of the whole anaerobic digestion process based on systemic literature review and integrated it into the classroom teaching through the BOPPPS teaching mode. It was found that the classroom teaching assisted by this metabolic chart could help students establish the structural framework of the anaerobic digestion process and enrich the knowledge system of metabolism, achieving a good teaching effect. This paper introduces the content of the metabolic pathways of anaerobic digestion and the design of the teaching process, which would facilitate the teaching reforms and perfection of textbooks for related courses, such as Biochemistry, Environmental Engineering Microbiology and New Energy Engineering.