In this paper the diversity of fruit quality within nine loquat cultivars, including five international affirmed cultivars (Algerie, Golden Nugget, Peluche, Bueno, El Buenet) and four local cultivars (Sanfilippara, Nespolone di Trabia, BRT20 and Claudia), were investigated in order to discriminate the variation in pomological characteristics, sensory profile, and antioxidant properties. Finally, to evaluate potential bioactivity, antiproliferative activity of hydrophilic extracts from loquat fruits was assessed, at dietary relevant concentrations, against three human epithelial cell lines. Even though the international cultivars confirmed an appropriate level of commercial qualities in association to high levels in antioxidant compounds, the local cultivars revealed the best performances in a wide range of chemical-physical and sensory characteristics. Concerning bioactivity, our results indicate that hydrophilic extracts from all tested cultivars showed concentration-dependent antiproliferative activity with a significant variability of effects between different cell lines and between different cultivars. HeLa cells, the most sensitive and hydrophilic extracts from Peluche, showed the highest inhibitory effect followed by Nespolone di Trabia and Claudia. The results of this trial provide useful information on the pomological traits and the not yet known specific nutritional and functional properties of loquat fruits. Our data, besides helping to promote specific local cultivars, could serve to establish a database that will permit to improve the utilization of specific genetic resources in breeding programs.
In this work, the food quality of four international (Campas, Chaffey, Fino de Jete and White) and three local (Daniela, Torre1 and Torre2) cultivars of Cherimoya (Annona cherimola Mill) was investigated. With this aim, pomological traits, sensorial attributes, physiochemical parameters (pH, total soluble content and total acidity), nutritional composition (macro- and micro-nutrients) and nutraceutical values (bioactive compounds, radical scavenging and antioxidant properties) were evaluated. Among the seven observed cultivars, Fino de Jete was identified as the best, not only for its commercial attributes such as pomological traits and physiochemical values, but also for its nutritional composition. On the other hand, Chaffey and Daniela were the cultivars with the highest content of polyphenols, proanthocyanidins, and with the strongest antioxidant capacity. Concerning the two local ecotypes, Torre1 and Torre2, they displayed a balanced nutritional profile that, if combined with their discrete nutraceutical, physicochemical and pomological values, may result in a reassessment of their commercial impact. In conclusion, our data provide interesting information about the pomological, nutritional, and nutraceutical properties of cherimoya fruits. Our results, in addition to promoting the commercial impact of local cultivars, may increase the use of individual cultivars in breeding programs.
Introduction. Fruit quality can be evaluated by combining instrumental and sensory analyses. These methodologies have been affirmed and tested on different fruit tree species, but loquat is still little known from this point of view. Materials and methods. In this trial, conducted in Palermo and Catania (Sicily, Italy), both instrumental and sensory analyses were carried out on fruit of 8 loquat affirmed cultivars ('Golden Nugget', 'Peluche') and local cultivars ('Marcenò', 'Sanfilippara', 'Nespolone di Trabia', 'Virticchiara', 'Bianco Dolce' and 'BRT20') with the aim of assessing their quality traits. Results and discussion. The sensory results agreed quite well with the physicochemical data. Among the affirmed cultivars both 'Peluche' and 'Golden Nugget' confirmed their commercial value expressing a good overall fruit quality. On the other hand, the local Sicilian cultivars have very interesting physical, chemical and sensory profiles. Conclusion. The results indicated the goodness of this approach in evaluating loquat fruit quality and proved that not only the affirmed loquat cvs but also the local ones had very interesting qualitative features.Keywords: Italy / Sicily / loquat / Eriobotrya japonica / fruit quality / physicochemical analysis / sensory testing Résumé -Évaluation de la qualité des fruits de cultivars commerciaux ou traditionnels de néflier (Eriobotrya japonica Lindl.) par analyses instrumentales et sensorielles. Introduction. La qualité des fruits peut être évaluée en combinant les analyses instrumentales et sensorielles. Ces méthodologies ont été mises au point et testées sur différentes espèces d'arbres fruitiers, mais le néflier du Japon est encore peu connu de ce point de vue parce que l'on manque d'information sur la qualité des fruits des variétés locales traditionnelles. Matériel et méthodes. Dans cette étude, réalisée à Palerme et à Catane (Sicile, Italie), deux analyses instrumentales et sensorielles ont été réalisées sur les fruits de huit cultivars de néflier commerciaux ('Golden Nugget', 'Peluche') ou locaux ('Marcenò', 'Sanfilippara', 'Nespolone di Trabia', 'Virticchiara', 'Dolce Bianco' et 'BRT20') dans le but d'évaluer leurs caractéristiques de qualité. Résultats et discussion. Les résultats d'analyse sensorielle ont assez bien correspondu avec les données physico-chimiques. Parmi les cultivars commerciaux, 'Peluche' et 'Golden Nugget' ont tous les deux confirmé leur valeur commerciale à travers une bonne qualité globale de leurs fruits. D'autre part, les cultivars locaux siciliens ont montré des profils physiques, chimiques et sensoriels très intéressants. Conclusion. Les résultats indiquent la validité de cette approche dans l'évaluation de la qualité des fruits du néflier, en ayant démontré que non seulement les cultivars commerciaux mais aussi les variétés locales avaient des caractéristiques qualitatives très intéressantes. Mots clés :Italie / Sicile / néflier du Japon / Eriobotrya japonica / qualité du fruit / analyse physicochimique / évaluation sensorielle 106 Vittorio Far...
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