Liebig's Extractum Carnis (LEMCO)

extract · 1865–1900

category:extract

delivery:Dissolved in hot water and consumed as 'meat tea' or beef broth; also used as a culinary flavouring for soups, sauces, and made dishes. One teaspoon of extract per cup of boiling water was the standard therapeutic dose for invalids.

price tier:premium

era:1865–1900

current status:historical

regulatory:unregulated

SHORT PITCH (AS SOLD)

The concentrated essence of 34 pounds of fresh beef in a single jar; a scientific preparation by the world's greatest chemist that restores the vital nitrogenous principles of meat to the invalid, the soldier, and the overworked professional.

THE ACTUAL EVIDENCE

The extract contains negligible protein and fat. Its nitrogenous content consists primarily of creatine and creatinine, metabolic waste products that are excreted via the kidneys without contributing to tissue building. Its mineral salt content provides no caloric value. The genuine benefit of the extract is as a flavouring agent and mild gastric stimulant by virtue of its glutamate and nucleotide content. Dogs fed exclusively on the extract died (Kemmerich, 1868). The product's manufacturer eventually conceded that it was a flavouring and stimulant, not a source of nutrition.

PRACTITIONERS

Justus von Liebig (Baron Liebig)

INGREDIENTS

CASES

liebig-meat-extract-1865-1900

CLAIMS

Meat extract contains the essential nitrogenous albuminoids and kreatin that constitute meat's vital nutritive principles; consuming the extract supplies the body with the substance needed to build and restore muscle tissue. refuted
One pound of Liebig's Extract of Meat represents the concentrated nutritive value of 34 pounds of fresh beef; invalids and convalescents can obtain the full nourishment of meat in a convenient liquid form. refuted
Liebig's meat extract, taken as meat tea, is a medicinal food for invalids and the sick, marketed through physicians as a restorative for those too weak or unwell to consume ordinary solid food. refuted

SOURCES

NOTES

Liebig’s Extractum Carnis, marketed from 1865 through the Liebig Extract of Meat Company (LEMCO) and sold in Britain as LEMCO and later as OXO, was a dark, viscous concentrate produced by simmering lean beef in water, straining, and evaporating the broth. The Fray Bentos factory in Uruguay processed South American cattle on an industrial scale: by the 1870s it was producing hundreds of thousands of jars annually. The product was initially positioned as a medical food, marketed through physicians and apothecaries and accompanied by testimonials of its efficacy for invalids, convalescents, soldiers, and explorers.

The intervention rested entirely on Liebig’s nutritional theory. He held that the water-soluble nitrogenous fraction of meat, concentrated in the extract, contained the essential albuminoids and kreatin that the body required for tissue building and muscular energy. One pound of extract, derived from approximately 34 pounds of fresh beef, was therefore claimed to deliver the equivalent nourishment. Physicians prescribed meat tea for patients who could not eat solid food; military authorities purchased it for field use; polar and tropical expeditions carried it as a compact source of sustenance.

The product’s commercial career and scientific reputation diverged after 1865. Critical analyses in The Lancet and by Almén in the Upsala Medical Society’s proceedings demonstrated that the extract contained almost no protein or fat. In 1868, physiologist Edward Kemmerich fed dogs exclusively on the extract; all died, a result he published as evidence that the extract was not merely non-nutritive but positively harmful as a sole food. The Franco-Prussian War of 1870-71 lent temporary credibility through military testimonials, but by 1874 LEMCO had ceased advertising in medical and pharmaceutical journals and repositioned the product for domestic use as a flavouring agent and convenience food. The OXO brand, descended from LEMCO, is still sold today as a culinary product with no nutritional or health claims.