Vitamin K Content of Margarine in Portugal, Belgium, Netherlands, the United Kingdom, the United States, and Japan

Abstract

Margarine samples from the market in Portugal (11 brands), Belugium (12 brands), Netherlands (10 brands), the United Kingdom (12 brands), the United States (17 brands) and Japan (24 brands) were collected for determination of vitamin K₁ and dihydro-vitamin K₁ content.
1) Mean values of vitamin K₁ content were as follows : the United States, 72.1μg/100g, Japan, 47.1μg/100g, Portugal, Belgium, Netherlands and the United Kingdom, 54.1 to 68.1μg/100g.
2) Mean values of dihydro-vitamin K₁ content were as follows : Belgium, absent, Portugal, 22.2μg/100g for one brand and absent in 10 others, the United States, 62.1μg/100g, and this value exceeds all others in Netherlands, the United Kingdom and Japan (from 19.7 to 25.2μg/100g).