Isolation of d -glyceric acid from cress seedlings and its relationship to the synthesis of l -ascorbic acid

In the preceding paper (Isherwood, Chen & Mapson, 1953) it has been shown that the transformation in cress seedlings and rats of the two common hexoses D-glucose and D-galactose into L-ascorbic acid can be represented in outline by the following series of reactions: D-glucose -. D-glucurono-y-lactone - L-gulono-y-lactone -+ L-ascorbic acid and