Developing Powerful Multi-Antioxidant Systems by Exploring the Compositional Diversity of Essential Oils and Plant extracts and by Modulating their Structures

Because of growing consumers’ demand for natural products, plant-derived antioxidants have gained much attention. For instance, essential oils and plant extracts are becoming popular natural substitutes for synthetic antioxidants as they address consumer concerns regarding the side effects of synthetic ones. However, understanding and exploring the chemical diversity of essential oils and plant extracts to develop powerful multi-antioxidant systems are needed. Herein, in this presentation, I will provide new insights regarding the chemical diversity of essential oils and plant extracts and shed some light on how chemical profiling can be used to identify the inherent synergistic, additive, or antagonistic interactions within or between the natural ingredients through multivariate analyses. Our work evidences that the determination of functional properties based on the chemical profiles can be achieved using predictive models. Combinatorial interactions of selected phenol and terpene-rich essential oils enriched with individual polyphenols, crude plant extracts and mixtures of their major polyphenols will be highlighted. Our ability to modulate enzymatically the structures of some natural antioxidants to maximize their functionalities through lipase-catalyzed transesterification or feruloyl esterase-catalysed esterification will also be discussed.

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