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首页> 外文期刊>The Journal of Supercritical Fluids >Supercritical CO2 extraction of cumbaru oil (Dipteryx alata Vogel) assisted by ultrasound: Global yield, kinetics and fatty acid composition
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Supercritical CO2 extraction of cumbaru oil (Dipteryx alata Vogel) assisted by ultrasound: Global yield, kinetics and fatty acid composition

机译：超声辅助超临界CO2萃取姜油（Dipteryx alata Vogel）：总产量，动力学和脂肪酸组成

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摘要

Cumbaru almond is obtained from a plant of the Brazilian Cerrado and contains elevated amount of oil. The aims of this work were to extract the cumbaru oil by supercritical CO2 extraction with and without ultrasound (US) and to evaluate the process by means of global yield, modeling extraction kinetics and fatty acids profile. An experimental design was proposed to obtain cumbaru oil by supercritical fluid extraction (SFE) without US. The process was evaluated at 40,50 and 60 degrees C and 15,25 and 35 MPa. The best conditions to recover cumbaru oil were 40 and 50 degrees C at 35 MPa, in which 22.6 and 22.8 g of oil/g of raw material were obtained, respectively. The fatty acid profile was not affected by variations in SFE conditions. The BET-based model and broken-intact cell model were able to fit and represent adequately the SC-CO2 extraction kinetics of cumbaru oil (AARD < 10%). The oil presented high concentration of oleic (similar to 49%) and linoleic (similar to 26%) acids. A higher initial rate of fatty acids was achieved when the extraction process was assisted by US, and US did not modify the fatty acid composition of the whole oil and the final global yield. (C) 2015 Elsevier B.V. All rights reserved.
机译：Cumbaru杏仁是从巴西Cerrado的一家工厂获得的，含有较高含量的油。这项工作的目的是在有或没有超声波（美国）的情况下，通过超临界CO2萃取法提取香茅油，并通过总收率，模拟萃取动力学和脂肪酸谱对工艺进行评估。提出了一种实验设计，旨在通过不使用US的超临界流体萃取（SFE）来获得香茅油。在40,50和60摄氏度以及15,25和35 MPa下评估了该过程。回收cumbaru油的最佳条件是在35 MPa下于40和50摄氏度，分别获得22.6和22.8 g油/ g原料。脂肪酸谱不受SFE条件变化的影响。基于BET的模型和完整破损的细胞模型能够拟合并充分代表了印度棕榈油的SC-CO2萃取动力学（AARD <10％）。该油呈现出高浓度的油酸（约占49％）和亚油酸（约占26％）。在美国的协助下，萃取过程可以达到较高的脂肪酸初始率，而美国并未改变全油的脂肪酸组成和最终的全球产量。 （C）2015 Elsevier B.V.保留所有权利。

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