Available languages: История History Historie Historia

Discovery of the grapefruit seed extract

The properties of the grapefruit seed extract were discovered in 1972 by Doctor Jacob Harich. Doctor Harich was born in Yugoslavia in 1919. His studies in physics were interrupted by World War II, in which he fought as a pilot. After witnessing the horror of war, he gave up physics and devoted his life to medicine. He specialised in gynaecology and immunology. Having emigrated to the United States, he furthered his education at Long Island University in New York.

He was interested in studying natural substances capable of eliminating microorganisms while causing no harm to humans.
In 1963, he moved to Florida and began research on products derived from grapefruit. Harich’s interest in grapefruits was developed shortly after WWII when he bit through a seed while eating a fruit.

His attention was drawn by a bitter sensation felt on his tongue. That was when he started to think about what causes such a taste and whether it can be used in any way. Grapefruits were widely cultivated in Florida, so he had plenty of research material. The discovery by Doctor Harich could have been forgotten if it was not for cooperation with Doctor Steven Otwell and Doctor Wayne Marshall from University of Florida in Gainesville. Both of them dealt with food microbiology and many other domains.

Initially, they were very sceptical about Doctor Harich’s claim that the grapefruit seed extract destroys many microorganisms while being safe for humans but soon they became convinced that products derived from grapefruit  effectively protect food against bacteria, fungi and parasites. The renown of the science centre which was their home base prompted other researchers to take interest in the extract. Doctor Harich’s work on the grapefruit seed extract was boosted in 1990, when physicians from the United States started to appreciate the significance of his discovery.

In 1995, Harich was invited as a guest of honour to the Pasteur Institute. His work has also been valued by farmers in Europe who now use a powdered form of GSE in fish and poultry feed to prevent infections caused by Salmonella and E. Coli bacteria.

Doctor Harich died in 1996, having gained the satisfaction of making his lifelong dreams come true: GSE is currently used on an increasingly large scale as a harmless product fighting microorganisms and helping to stay healthy.

Those who would like to know more about the efficacy of the grapefruit seed extract are encouraged to read “The Authoritative Guide to Grapefruit Seed Extract” by Doctor Allan Sachs.