Ultrasound pretreatment combined with supercritical CO2 extraction of Costus spicatus leaf extract

IF 3.4 3区工程技术 Q2 CHEMISTRY, PHYSICAL Journal of Supercritical Fluids Pub Date : 2024-08-07 DOI:10.1016/j.supflu.2024.106372

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Abstract

This work aimed to obtain extracts from Costus spicatus leaves through ultrasonic pretreatment in supercritical CO₂ extraction (UAE+SFE). A central composite design was used to evaluate the influence of temperature (36–64 °C), pressure (8–20 MPa), and cosolvent (0–20 %w) in terms of overall yield and chemical composition. Morphology using scanning electron micrograph (SEM), total phenolic content, content of total flavonoid, antioxidant (DPPH and ABTS), and antibacterial activities were evaluated. UAE+SFE showed a more notable overall yield, with 6.97 %. In the SEM, the sample treated with UAE+SFE significantly impacted tissue structures, improving the selectivity of SFE regarding linolenic acid, leading to a maximum composition value of 62.5 % area according to GC-MS. Furthermore, the UAE+SFE extract exhibited strong antimicrobial activity compared to the extract obtained by the SFE technique. Based on the pioneering results, the bioactives obtained are promising and interesting for application in the cosmetic, pharmaceutical, and food industries.

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超声波预处理与超临界二氧化碳萃取相结合的木贼叶提取物

本研究旨在通过超临界二氧化碳萃取（UAE+SFE）中的超声波预处理从树叶中获得提取物。采用中心复合设计评估了温度（36-64 °C）、压力（8-20 MPa）和助溶剂（0-20 %w）对总收率和化学成分的影响。使用扫描电子显微镜（SEM）对其形态、总酚含量、总黄酮含量、抗氧化性（DPPH 和 ABTS）和抗菌活性进行了评估。UAE+SFE 的总收率较高，为 6.97%。在扫描电子显微镜下，用 UAE+SFE 处理过的样品对组织结构产生了显著影响，提高了 SFE 对亚麻酸的选择性，从而使 GC-MS 显示的最大成分值达到 62.5 %。此外，与通过 SFE 技术获得的提取物相比，UAE+SFE 提取物具有很强的抗菌活性。基于这些开创性的结果，所获得的生物活性物质有望在化妆品、制药和食品行业中得到应用。

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来源期刊

Journal of Supercritical Fluids 工程技术-工程：化工

CiteScore

7.60

自引率

10.30%

发文量

236

审稿时长

56 days

期刊介绍： The Journal of Supercritical Fluids is an international journal devoted to the fundamental and applied aspects of supercritical fluids and processes. Its aim is to provide a focused platform for academic and industrial researchers to report their findings and to have ready access to the advances in this rapidly growing field. Its coverage is multidisciplinary and includes both basic and applied topics. Thermodynamics and phase equilibria, reaction kinetics and rate processes, thermal and transport properties, and all topics related to processing such as separations (extraction, fractionation, purification, chromatography) nucleation and impregnation are within the scope. Accounts of specific engineering applications such as those encountered in food, fuel, natural products, minerals, pharmaceuticals and polymer industries are included. Topics related to high pressure equipment design, analytical techniques, sensors, and process control methodologies are also within the scope of the journal.