method for determining the origin and authenticity of biological, biochemical and nutritionally relevant substances by measuring their positionellen oxygen orhydrogen isotope ratios

摘要

A method for determining the origin of substances with biological, biochemical and nutritional physiological relevance and distinguishing them from synthetic analogs using their relative positional oxygen or hydrogen isotope ratios (delta18O value and delta2H value), in which-based on the fact that for organic compounds there are at least two different primary or secondary sources for these elements, each with different isotope values, and the incorporation of these elements is accompanied by different, but characteristic effects-the positional delta18O values or delta2H values are individually determined in the substances to be tested and they are compared with the values expected from biosynthesis, where a correspondence or deviation allows the authenticity or origin or adulteration of the substance to be detected.