Grupo de Investigación en Tecnologías Emergentes en Agroindustria (TEA), Agroindustrial Engineering Faculty, Universidad de Nariño, 1175 Pasto, Colombia.
School of Food Engineering, Universidad del Valle, 760031 Cali, Colombia.
Molecules. 2021 Apr 14;26(8):2279. doi: 10.3390/molecules26082279.
Colombian mango production, which exceeded 261,000 t in 2020, generates about 40% of the whole fruit as solid waste, of which more than 50% are seed kernels (over 52,000 t solid by-product); though none is currently used for commercial purposes. This study reports the results of the supercritical carbon dioxide (scCO) extraction of an oil rich in essential fatty acids (EFAs) from revalorized mango seed kernels and the optimization of the process by the Response Surface Methodology (RSM). In pilot-scale scCO experiments, pressure (23-37 MPa) and temperature (52-73 °C) were varied, using 4.5 kg of CO. The highest experimental oil extraction yield was 83 g/kg (37 MPa and 63 °C); while RSM predicted that 84 g/kg would be extracted at 35 MPa and 65 °C. Moreover, by fine-tuning pressure and temperature it was possible to obtain an EFA-rich lipid fraction in linoleic (37 g/kg) and α-linolenic (4 g/kg) acids, along with a high oleic acid content (155 g/kg), by using a relatively low extraction pressure (23 MPa), which makes the process a promising approach for the extraction of oil from mango waste on an industrial scale, based on a circular economy model.
哥伦比亚的芒果产量在 2020 年超过 26.1 万吨，其中约 40%的果实会产生固体废弃物，超过 50%的是果核（超过 5.2 万吨的固体副产物）；尽管目前这些果核都没有被用于商业用途。本研究报告了利用超临界二氧化碳（scCO2）从回收利用的芒果果核中提取富含必需脂肪酸（EFAs）的油脂的结果，并通过响应面法（RSM）对该过程进行了优化。在中试规模的 scCO2 实验中，压力（23-37 MPa）和温度（52-73°C）均有变化，使用了 4.5 千克的 CO2。最高的实验油提取产率为 83 g/kg（37 MPa 和 63°C）；而 RSM 预测在 35 MPa 和 65°C 时，提取率为 84 g/kg。此外，通过微调压力和温度，可以在相对较低的提取压力（23 MPa）下获得富含亚油酸（37 g/kg）和α-亚麻酸（4 g/kg）的 EFAs 脂质部分，以及高油酸含量（155 g/kg），这使得该工艺有望在循环经济模型的基础上，在工业规模上从芒果废弃物中提取油脂。
