The organoleptic and nutritive quality of sweet cherry is largely influenced by the genotype. Phenolic compounds, antioxidant activity, organic acids, sugars and volatile compounds of seven sweet cherry cultivars (Lory, Burlat, Brooks, Summit, Prime Giant, Van, and 57) grown in Alicante (Spain) were evaluated. The most important organic acid was malic acid and fructose and glucose were found in greater quantity in the sweet cherry cultivars. The cultivars with the highest antioxidant activity were Burlat and Brooks, very important from a health point of view. Regarding volatile compounds thirty one were isolated having Van the highest contents. 57, and Burlat sweet cherry genotypes were the most interesting with respect to "health benefits". However, if the most important factor is "organoleptic quality" (combination of dark red colour and intense flavor), our recommendations are Van, 57, and Prime Giant.
The larval caterpillar Pseudosphinx tetrio L. is a species that feeds specifically on plants belonging to the family Apocynaceae. The genus Allamanda includes many shrubs or flowering trees which are grown throughout the tropical regions and are well known due their several biological properties. This work explores the interaction between the caterpillar and this plant using several analytical techniques such as thin layer chromatography, nuclear magnetic resonance spectroscopy, high performance liquid chromatography coupled with mass spectrometry and cyclic voltammetry. Further, a multivariate data analysis was performed in attempt to obtain better insights regard the samples. The results point out the similar profile between the health and herbivore Allamanda cathartica L.’s leaves and the caterpillars’ faeces. The similar analytical profile between the leaves of A. cathartica and the faeces of P. tetrio, as well as the difference with the caterpillar’s bodies suggest a selective excretion of compounds by the caterpillar. These compounds found selectively in the faeces (and not in the body) can explain that P. tetrio can feed this toxic Apocynaceae species.
A Herminio Boira, por todo el interés y generosa dedicación hacia este trabajo, así como por toda la confianza que ha depositado en mi a lo largo de estos años. Gracias por sus lecciones, por compartir sus conocimientos, y por enseñarme a razonar para intentar comprender la naturaleza.A José Vicente Galindo, por su apoyo, atención y confianza, tan importante para mi, pero sobretodo por su amistad, y a Rafa Méndez, por su compañerismo y consejos.
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