In sight on olive oil maceration and supercritical CO in extracting rosemary essential oil.

Sci Rep

Phytochemistry and Plant Systematics Department, National Research Centre, El-Buhouth St. 33, Dokki, Cairo, 12622, Egypt.

Published: November 2024

The flavor, nutritional, and medicinal value of rosemary are well known. Hydrodistilled (HD) essential oil was prepared in the present study as a standard. Olive oil maceration (OM) and supercritical carbon dioxide (SC-CO) technology were separately applied to extract the essential oil of rosemary. The three obtained products, HD, OM, and SC-CO, were compared concerning their main constituents using GC‒MS. Their antimicrobial properties were evaluated against eight microbes by the disc diffusion assay. Interestingly, both 1,8-cineol and camphor were the major compounds in the three oils. α-Pinene was also detected in large amounts in both HD and OM. Additionally, borneol was the third major component in SC-CO. The antimicrobial results revealed differential effects against six microbes. However, HD oil also exhibited antifungal activity. Maceration is a green extraction procedure that is easy to perform in households, and attention must be paid to olive oil maceration as a complementary medicine that originated in pharaohs.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11607071PMC
http://dx.doi.org/10.1038/s41598-024-79832-yDOI Listing

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