It (at least, the abstract, the rest is paywalled) deals with “vegetables and fruit” as a single category, not a disjoint union of two. I notice that in the list of subject classifications for the article, one of the classes is “fruit and vegetables”.
The everyday distinction between the two is not relevant to nutrition, and there is no scientific distinction. In the technical discourse of the laboratory, some plant organs are called “fruits”, “nuts”, or various other things, but none are called “vegetables”.
The questions to ask are about which fruits and vegetables contain which nutrients.
It (at least, the abstract, the rest is paywalled) deals with “vegetables and fruit” as a single category, not a disjoint union of two. I notice that in the list of subject classifications for the article, one of the classes is “fruit and vegetables”.
The everyday distinction between the two is not relevant to nutrition, and there is no scientific distinction. In the technical discourse of the laboratory, some plant organs are called “fruits”, “nuts”, or various other things, but none are called “vegetables”.
The questions to ask are about which fruits and vegetables contain which nutrients.