In this study, the use of supercritical CO2 (scCO2), and compressed propane (CP) were applied to obtain a crude extract rich in d-limonene (DL) from Ponkan waste from the juice industry. The moisture content of the dried waste was 8.53 % and a particle size of 28 mesh was determined for the extractions. Soxhlet extraction was performed with 5 g of waste and 150 mL of n-hexane and showed an extraction yield of 1.94 % with a DL fraction of 44.83 %. The experimental design was carried out for scCO2 and CP and the condition that resulted in the highest extraction yield (1.50 %) and DL fraction (89.01 %) using scCO2 was 80 °C and 20 MPa, while when C3H8 was used, the highest extraction yield (2.35 %) and DL fraction (89.38 %) were obtained at 40 °C and 15 MPa. The results show that scCO2 and C3H8 are selective solvents for DL extraction.

中文翻译：

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用压缩丙烷和超临界 CO2 从 Citrus reticulata Blanco 废料中提取 d-柠檬烯


在这项研究中，使用超临界 CO2 （scCO2） 和压缩丙烷 （CP） 从果汁行业的椴柑废料中获得富含 d-柠檬烯 （DL） 的粗提取物。干燥废物的水分含量为 8.53%，确定提取的粒径为 28 目。使用 5 g 废液和 150 mL 正己烷进行索氏萃取，提取率为 1.94%，DL 分数为 44.83%。对 scCO2 和 CP 进行实验设计，使用 scCO2 提取率 （1.50%） 和 DL 分数 （89.01%） 的条件是 80 °C 和 20 MPa，而使用 C3H8 时，在 40 °C 和 15 MPa 下获得最高的提取率 （2.35%） 和 DL 分数 （89.38%）。结果表明，scCO2 和 C3H8 是 DL 提取的选择性溶剂。