With the yield of concentration of sulfur compound as the evaluation index, the contrast between onion essential oil and摘要以洋葱粉为研究对象，以含硫化合物浓度为评价指标，采用水蒸汽蒸馏、溶剂萃取法和索氏提取法进行洋葱精油与油树脂的比较研究。