Development of Natural Therapeutic Products and Preservatives from Citrus Peels

Janeta Orenstein and Uzi Afek

Gilat Research Center, ARO

Gilat, Israel

janaor@volcani.agri.gov.il

Is it possible to turn a by-product such as citrus peels into a multi-functional product? Treatment of citrus peels with a unique and 

natural biotechnological process results in an aqueous extract which produces broad-spectrum anti-microbial substances. The extract inhibits in vitro pathogenic fungi and bacteria. Chemical analysis of the aqueous extract identified four compounds. These compounds: scoparone, umbeliferon, scopoletin and ascoletin, also known as phytoalexins, contribute to the resistance of citrus against pathogens. These products are used in the food, cosmetics and pharmaceutical industries. Our results aroused the interest of Israeli and international cosmetic companies. The product contains active ingredients that can supply therapeutic care for various skin disorders, such as: acne, athlete’s foot, herpes and skin rashes. The product accelerates the healing of wounds including diabetic ulcers. Microbiological tests showing that this product can function as a natural active ingredient as well as a natural preservative have inspired additional interest among food and cosmetic producers worldwide.

Mrs. Janeta Orenstein has an M.Sc. in Life Sciences and B.Sc. in Chemistry from the Ben Gurion University of the Negev (Beer Sheva). She works at Gilat research center, within the Volcani Institute. Her expertise lies in the field of phytopathology, tissue cultures, and post-harvest storage of root vegetables, and her professional experience includes scientific project management, student training, as well as participation in international conferences and exhibitions. Mrs. Orenstein has two patents registered in her name and has authored numerous articles in various professional journals.