Encapsulated essential oils for natural food preservation
Development of encapsulated essential oils to improve preservative efficacy against bacteria, molds, and yeasts in food products. The technology enhances solubility, stability, and controlled release, supporting safe and effective preservation for up to 12 months. It is designed to work across food matrices with varying pH and water content while aiming to avoid changes to organoleptic, physical, or chemical characteristics.
Overview
Encapsulated essential oils (EOs) provide a natural food preservation approach by improving the solubility and stability of plant-derived extracts. Encapsulation mitigates limitations of direct EO use, including low solubility and susceptibility to oxidation, while helping mask unfavorable flavors. The technology regulates EO release during storage to support preservation against bacteria, molds, and yeasts for up to 12 months. It is intended for a range of food products, including formulations with diverse pH and water content, with the goal of avoiding alteration of organoleptic, physical, or chemical features.
Technical specifications
Encapsulation uses methodologies to enhance EO efficacy against microorganisms. The process includes selecting specific EOs and carriers using green extraction methods tailored to the food type and ingredients. Encapsulation matrices are formed from proteins, carbohydrates, and vegetable oils, improving EO stability and antioxidant properties. The technology is assessed through testing of microcapsule flow behavior, thermal stability, and chemical structure using techniques such as rheometry, DSC, XRD, FTIR, and GC spectrometry. Optimized release kinetics are designed to maintain antimicrobial activity against molds and yeasts over prolonged periods.
Technology readiness level
The technology is currently at TRL 5, having been validated in relevant environments, with further optimization and scaling up planned for commercial applications.
About The Ohio State University
The Ohio State University is a comprehensive public land‑grant research university in Columbus, serving one of the nation’s largest student populations and a broad research enterprise. Industry partners engage through an integrated academic medical center for clinical translation, a campus‑adjacent innovation district for co‑located projects, and a statewide extension network that pilots solutions across Ohio. Corporate engagement provides a single front door for sponsored research, talent pipelines, and streamlined agreements. Research is supported by competitive federal funding from agencies such as NIH, NSF, DOE, USDA, DoD, and NASA. A dedicated technology transfer office and venture support help protect IP, license technologies, and launch startups.
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