Background

Subcritical water (SWE) and supercritical carbon dioxide extraction (SCCO₂) are novel extraction techniques for recovering compounds with food-enhancement and health promoting properties, from various plants and biomaterials. These extraction techniques are efficient, economical and promising routes for resource recovery without compromising the quality of the extracted products.

Scope and approach

Here, the theoretical background, practical application and recent trends associated with the use of SWE and SCCO₂ in the recovery of bioactive compounds from plant sources are presented. The paper is organised to allow a refreshed understanding of the main features, benefits, challenges, and possible solutions involving SCCO₂ and SWE based on the enormous number of scientific publications and the very few industrial applications in the public domain. The utilisation of these methods are advantageous in selective extraction of better-quality compounds at lowest potential environmental impact. Furthermore, two research publication databases were queried using specific criteria to show the progress and growth in interest on SWE and SCCO_2.

Key findings and conclusions

Subcritical water and supercritical carbon dioxide are viable extraction techniques for recovery of bioactive compounds. These techniques, standalone or combined sequentially or with other extraction methods, enhance yield and quality of thermally liable compounds. Mathematical models having a strong correlation with experimental data can also be used to predict and monitor the process kinetics. Our findings should be beneficial for professionals concerned with the application of technology in the development of new and existing food products, their storage and marketability.

中文翻译：

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亚临界水和超临界二氧化碳从植物材料中提取生物活性化合物的最新进展

背景

亚临界水（SWE）和超临界二氧化碳萃取（SCCO ₂）是一种新颖的萃取技术，用于从各种植物和生物材料中回收具有增强食品和健康特性的化合物。这些提取技术是在不损害提取产品质量的前提下进行资源回收的有效，经济和有希望的途径。

范围和方法

在此，介绍了从植物来源中回收生物活性化合物时使用SWE和SCCO ₂相关的理论背景，实际应用和最新趋势。本文的组织是基于大量的科学出版物和很少的公共领域工业应用，可以使人们重新了解SCCO ₂和SWE的主要功能，优势，挑战以及可能的解决方案。这些方法的利用有利于以最低的潜在环境影响选择性提取质量更高的化合物。此外，使用特定标准查询了两个研究出版物数据库，以显示对SWE和SCCO ₂感兴趣的进展和增长_。

主要发现和结论

亚临界水和超临界二氧化碳是回收生物活性化合物的可行提取技术。这些技术可以独立使用，也可以顺序使用或与其他提取方法结合使用，可提高热敏化合物的收率和质量。与实验数据具有高度相关性的数学模型也可以用于预测和监控过程动力学。我们的发现对那些在新食品和现有食品的开发，存储和销售方面关注技术应用的专业人员应该是有益的。