Vitamins and other Constituents of Grape-fruit Rind

A REVIEW of the literature reveals the fact that the grape-fruit (Citrus decu- mana) has been little studied either botanically or as regards its vitamin or other constituents. Zoller [1918], whose work on grape-fruit constituents is the most comprehensive we have been able to discover, reports considerable variations in the constituents and therapeutic activity of the different kinds of grape-fruit which are obtainable. He classifies these fruits into two main divisions. One, the larger, very bitter, non-edible kind is frequently termed the shaddock The other, smaller, less bitter, edible variety is the fruit usually met with in commerce, and was the one we employed in this investigation.