Recently, Moo-Huchin et al. (2014) reported that in Yucatan,
Mexico, there are a large number of tropical fruits that contain a
considerable amount of bioactive compounds and antioxidant
activity in the pulp such as the purple star apple, yellow cashew
and red cashew. These fruits are consumed in fresh or in a processed
form and the peel of the fruit is discarded as waste of little
value. Because fruit residues are inexpensive, easily available, and
composed of bioactive molecules, the focus of research has shifted
to such residues as a source of antioxidants, which could be used in
the food, cosmetic, and pharmaceutical industries (Babbar, Oberoi,
Uppal, & Patil, 2011). In this regard, the aim of this study was to
determine the main antioxidant compounds, antioxidant activity
and content of individual phenolic compounds of lyophilized peel
from purple star apple (Chrysophyllum cainito L.), yellow cashew
and red cashew (Annacardium occidentale) fruits grown in Yucatan,
México. To the best of our knowledge, this is the first paper presenting
comprehensive data on antioxidant compounds, antioxidant
activity and content of individual phenolic compounds
content for the three fruit peels.