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Supercritical CO2 extraction of favela (Cnidoscolus quercifolius) seed oil: Yield, composition, antioxidant activity, and mathematical modeling
The Journal of Supercritical Fluids ( IF 3.4 ) Pub Date : 2020-07-02 , DOI: 10.1016/j.supflu.2020.104981
Kátia Andressa Santos , Edson Antônio da Silva , Camila da Silva

Cnidoscolus quercifolius seeds were subjected to oil extraction with supercritical CO2 at 40, 50, and 60 °C and 20, 25, and 30 MPa for 120 min at 5 g min−1. The oils obtained were evaluated from the viewpoint of their yield, composition, and antioxidant activity; they were compared with the oil obtained using the conventional Soxhlet extraction method with n-hexane. Sovovás’ mathematical model was used to adjust the kinetic curves. The highest oil yield (41.0 wt%) was obtained at 60 °C and 30 MPa and corresponded to ∼87% of the Soxhlet yield. In this condition, the highest yields of tocopherols and β-sitosterol were obtained, i.e., 8.87 and 51.6 mg 100 gseed−1, respectively. The oils extracted by both the methods showed a similar fatty acid composition with a predominance of linoleic acid (∼60%). The highest antioxidant activity was equivalent to 6.82 mmol of trolox per kg of oil.



中文翻译:

超临界CO 2萃取紫花籽油的产量,组成,抗氧化活性和数学模型

在40、50和60℃以及20、25和30 MPa下,在5 g min -1下用超临界CO 2提取油酸猕猴桃种子,历时120分钟。从其收率,组成和抗氧化活性的角度评估所得油;他们使用与以往的索氏抽提法得到的油进行比较Ñ正己烷。索沃瓦斯的数学模型用于调整动力学曲线。在60°C和30 MPa下获得最高的油产率(41.0 wt%),相当于索氏提取率的〜87%。在这种条件下,生育酚和β-谷甾醇的产量最高,即8.87和51.6 mg 100 g种子-1, 分别。两种方法提取的油均显示出相似的脂肪酸组成,其中主要是亚油酸(约60%)。最高的抗氧化活性相当于每公斤油中6.82 mmol的trolox。

更新日期:2020-07-02
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