Authentication of Fruit Juices Derived from Morinda citrifolia (Noni)

摘要

The consumption of fruit juices derived from Morinda citrifolia (noni) has increased tremendously in the last few years especially in North America and Western Europe. This is due to its marketing as a remedy for several complaints. The high price level of such juices makes them prone for adulteration. This may include dilution with water, addition of fruit juices derived from other fruits or addition of sugar as well as the use of concentrated juice instead of direct juice. Another concern is the differentiation between fermented and fresh juice. The limited number of authentic noni juice samples available does not allow the differentiation between the degrees of processing of noni juices for instance with statistical based methods. Thus, a standard analytical method using the neolignans Isoamericanol A and Isoamericanoic acid A as marker compounds has been developed to determine the degree of processing and to ensure the quality of the products.