高效液相色谱法检测花椒中黄酮类成分综合实验设计

Design of Comprehensive Experiments for Determination of Flavonoids in Zanthoxylum Bungeanum by High Performance Liquid Chromatography

  • 摘要: 针对学校林产化工专业天然产物现代分析方法实验课程教学的需要,结合“双一流”专业建设,设计了“不同产地花椒中黄酮类成分的高效液相色谱法检测”综合实验。采用甲醇浸提−盐酸水解法提取花椒中黄酮类成分槲皮素和山奈酚,然后利用高效液相色谱法测定了不同产地花椒中槲皮素和山奈酚的含量。结果表明,实验建立的方法准确可靠,检出限为0.125 μg/g,相对标准偏差(RSD)小于2%。教学实践表明, 实验加深了学生对理论知识的理解,有效促进了学生理论知识和实践能力的融合,提高了学生的科学素养及综合思维能力,同时也培养了学生的创新思维和团队合作精神。

     

    Abstract: In order to meet the teaching needs of the course of modern analytical methods for natural products of forestry chemical industry in our school, we designed a comprehensive experiment of “high performance liquid chromatography (HPLC) for the determination of flavonoids in Zanthoxylum bungeanum Maxim from different origins” in conjunction with the construction of “double first-class” majors. The content of quercetin and kaempferol in Zanthoxylum bungeanum Maxim varieties from different origins was determined by high performance liquid chromatography (HPLC) using methanol extraction and hydrochloric acid hydrolysis, and the results showed that the analytical method was accurate and reliable, and the detection limit was 0.125 μg/g with RSD less than 2%. The teaching practice showed that the experiment deepened students’ understanding of theoretical knowledge, improved the fusion of students’ theoretical knowledge and practical ability, promoted the scientific literacy and comprehensive thinking ability of students, and cultivated students’ creative thinking and teamwork.

     

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