以下为句子列表：
英文: With the yield of concentration of sulfur compound as the evaluation index, the contrast between onion essential oil and onion oleoresin from dried onion powder by steam distillation, solvent extraction and Soxhlet method was studied.
中文: 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。
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