Polyphenol extraction from olive leaves to show Chemical Engineering students the importance of revaluating residues while improving their hands-on experience

IF 3.5 2区 教育学 Q1 EDUCATION, SCIENTIFIC DISCIPLINES
Inmaculada de Dios-Pérez , Celia Nieto , Milena A. Vega , Eva Martín del Valle
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引用次数: 0

Abstract

The aim of this work was to try to implement a new laboratory class for Chemical Engineering students in which they could analyze how it is possible to revalue some organic residues. Concretely, the objective was to show them how to revalue olive leaves by extracting their polyphenols, since these leaves, being an abundant organic waste in Spain, were well-known by the students to whom this study was addressed. With the aim of improving student understanding of the basic Chemical Engineering concepts, two extraction techniques (solvent extraction process and ultrasound-assisted extraction) as well as their combination were investigated during the class. In addition, the effect that different pre-treatments had on polyphenol extraction efficiency was also studied to show students how important research is before fine-tuning an industrial process. To do this, students were divided into working groups to carry out polyphenol extraction under different experimental conditions. Ultimately, student groups compared and discussed the efficiency of the different employed extraction techniques. Likewise, students were surveyed to evaluate the suitability and training-usefulness of the proposed class. Obtained assignments revealed that it could be an interesting option to improve students’ hands-on experience while strengthening some theoretical concepts explained in the degree lectures.

从橄榄叶中提取多酚,向化学工程专业的学生展示在提高动手经验的同时重新评估残留物的重要性
这项工作的目的是尝试为化学工程专业的学生开设一门新的实验课,让他们分析如何重新评估一些有机残留物的价值。具体地说,目的是向他们展示如何通过提取橄榄叶中的多酚来重新评估橄榄叶的价值,因为这些叶子在西班牙是一种丰富的有机废物,为这项研究的学生所熟知。为了提高学生对化学工程基本概念的理解,本课程探讨了两种萃取技术(溶剂萃取法和超声辅助萃取法)及其组合。此外,还研究了不同预处理对多酚提取效率的影响,以向学生展示在微调工业过程之前进行研究的重要性。为此,学生们被分成工作小组,在不同的实验条件下进行多酚提取。最后,学生小组比较并讨论了不同提取技术的效率。同样地,学生被调查以评估所建议的课程的适用性和训练有用性。获得的作业表明,在加强学位讲座中解释的一些理论概念的同时,提高学生的实践经验可能是一个有趣的选择。
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来源期刊
CiteScore
8.80
自引率
17.90%
发文量
30
审稿时长
31 days
期刊介绍: Education for Chemical Engineers was launched in 2006 with a remit to publisheducation research papers, resource reviews and teaching and learning notes. ECE is targeted at chemical engineering academics and educators, discussing the ongoingchanges and development in chemical engineering education. This international title publishes papers from around the world, creating a global network of chemical engineering academics. Papers demonstrating how educational research results can be applied to chemical engineering education are particularly welcome, as are the accounts of research work that brings new perspectives to established principles, highlighting unsolved problems or indicating direction for future research relevant to chemical engineering education. Core topic areas: -Assessment- Accreditation- Curriculum development and transformation- Design- Diversity- Distance education-- E-learning Entrepreneurship programs- Industry-academic linkages- Benchmarking- Lifelong learning- Multidisciplinary programs- Outreach from kindergarten to high school programs- Student recruitment and retention and transition programs- New technology- Problem-based learning- Social responsibility and professionalism- Teamwork- Web-based learning
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