Citrus peel wastes containing a series of very beneficial active compounds are produced in large quantities around the world every year, which are usually extracted by traditional methods, requiring high energy costs, long extraction times and additional reagents. Based on the unique heating characteristics of microwave heating, this paper uses microwave heating to extract the essential oils of citrus peel. Exploring the content change rule and the composition distribution situation of citrus peel product with different reaction time and microwave power, and comparing the microwave extraction and conventional extraction methods of citrus peel essential oils, infer the mechanism of microwave extraction. Considering the efficiency and energy consumption, optimum microwave power and time were selected as 450 W and 10 min. At microwave power of 450 W, 29.22% liquid product was obtained with 37.82% limonene yield in the liquid. The limonene yield per unit energy consumption in case of microwave heating was found to be 18.6 times that of traditional heating, and the extraction mechanism based on microwave heating effect and pumping effect was proposed.

世界各地每年都会大量生产含有一系列非常有益的活性化合物的柑橘皮废料，通常采用传统方法提取，需要高能源成本、较长的提取时间和额外的试剂。本文基于微波加热独特的加热特性，利用微波加热提取柑橘皮精油。探索不同反应时间和微波功率下柑橘皮产品的含量变化规律和成分分布情况，比较微波提取和常规提取柑橘皮精油的方法，推断微波提取的机理。考虑到效率和能耗，选择最佳微波功率和时间为 450 W 和 10 分钟。在 450 W 的微波功率下，得到29.22%的液体产物，液体中柠檬烯的产率为37.82%。发现微波加热时单位能耗的柠檬烯收率是传统加热的18.6倍，提出了基于微波加热效应和抽吸效应的提取机理。