Search results for "Sensor"

La coltivazione della Papaya in Sicilia: qualità dei frutti e prospettive

2018

Data la numerosità dei genotipi di papaia coltivati in Sicilia si è resa necessaria una caratterizzazione qualitativa degli stessi. In questo studio sono stati confrontati, da un punto di vista pomologico, chimico-fisico, nutraceutico e sensoriale, i frutti di 5 differenti genotipi di papaia nell’ottica di individuarne e definirne qualità e rispondenza per il mercato locale ed europeo.

Monitoring the Shelf-Life of Minimally Processed Fresh-Cut Apple Slices By Physical–Chemical Analysis and Electronic Nose

2014

Fresh-cut apples, in slices or in cubes, are minimally processed products, which are currently collecting a great interest by fruit marketers for their promising diffusion. Their shelf life, from a microbiological point of view, has been fixed about 2 or 3 weeks under refrigeration. However in a few days they undergo biochemical degradations with production of off-flavors and texture breakdown. In this work, the change of aromatic fingerprint of apple slices packaged in air and in a modified atmosphere (with 100% N2) and stored at 4°C was measured, by using a commercial electronic nose. The obtained data were also compared with sensory evaluation of judge’s panel. Moreover, quality paramete…

Effetto di diversi trattamenti Modified Atmosphere Packaging (MAP) sulla qualità di frutti di gelso (Morus alba L. cv Kokuso 21)

2021

Il consumo italiano di piccoli frutti ha visto un notevole incremento nell’ultima decade grazie alla maggior attenzione rivolta dal consumatore al valore nutrizionale della frutta fresca. Il gelso è un frutto climaterico, caratterizzato da un elevato contenuto in carotene, vitamine B1, B2 e C, glucosio, saccarosio, acido tartarico e succinico, fenoli totali e antociani. Grazie al suo particolare valore nutraceutico il gelso è considerato oltre che un alimento funzionale anche un prodotto di alta gamma. Tuttavia, la commercializzazione di questo tipo di frutto è ancora in certa misura ostacolata dalla loro spiccata deperibilità ed è pertanto necessario sviluppare metodi in grado di estendern…

Calcium Ascorbate Coating Improves Postharvest Quality and Storability of Fresh-Cut Slices of Coscia and Abate Fétel Pears (Pyrus communis L.)

2022

Flesh firmness is closely related to fruit ripeness and is typically a reliable indicator of shelf-life potential so it could be considered a crucial quality index for the determination of pear quality. Flesh softening after cutting could considerably affect consumer acceptance of fresh-cut pears (Pyrus communis L.). Indeed, mechanical stress (cutting, peeling, etc.) could lead to ethylene production that results in the hydrolysis of pectic substances in the cell walls. The effectiveness of an edible coating treatment on the physical-chemical, nutraceutical, and sensorial analysis was evaluated on two pear cultivars: the summer-ripening ‘Coscia’ and the late-ripening ‘Abat…

Postharvest quality and sensory attributes of ‘pesca di bivona’ peaches (Prunus persica L.) during storage

2017

“Pesca di Bivona” ‘Murtiddara’, ‘Bianca’, ‘Agostina’, and ‘Settembrina’ are non-melting white flesh peach landraces characterized by a persistent aroma and excellent flavour highly appreciated by Italian consumers. The aim of this work was to assess the persistence of their quality and sensory profiles after storage at 0 °C for 28 days, using destructive and non-destructive analyses. The IAD index, measured either at harvest or at fruit removal from cold storage, was correlated to TSS, TA and firmness of all the landraces. ‘Settembrina’ and ‘Agostina’ harvested at the right ripening time (50.5 ± 4.3 N) and stored at 0 °C during 4 weeks kept harvest quality in terms of sensorial attributes, …

Quality Changes of Tropical and Subtropical Fresh-Cut Fruits Mix in Modified Atmosphere Packaging

2017

Application of passive modified atmosphere packaging (MAP) for shelf life extension of mixed pineapple slices, mango pieces and orange segments, was evaluated. Fruits of Ananas cv ‘Gold’, Mango cv ‘Keitt’ and Orange cv ‘Washington Navel’ were washed, sanitized, peeled and cut. Minimal processed fruits were packed under 2 different atmospheres, passive (air) and active MAP (70% N2, 10 %O2, 20 %CO2), and stored at 10±1 °C with 85±5% RH for 12 days. Changes in package atmosphere composition, weight loss, color, texture, pH, soluble solids, sensory attributes, were evaluated after cutting and at three subsequent stages of storage (the 3 day, 6d, 9d, and the 12 day). Color parameters L* and b* s…

Postharvest Application of Sulphur Dioxide Fumigation to Improve Quality and Storage Ability of "Red Globe" Grape Cultivar During Long Cold Storage

2017

Table grape cv 'Red Globe' is produced in Sicily and in other areas of Southern Italy. This produce is very appreciated by consumers, having the best rankings in the world market for exports and quality. Nevertheless, despite it is a non-climacteric fruit, table grape is very perishable, both after harvest, and during postharvest handling and cold storage. In fact, also at low temperatures, table grape is very sensitive to fungal infection (Botrytis cinerea) and other diseases, like gray mold, which is very aggressive. For this reason, a standard practice is to fumigate table grape with sulphur dioxide (SO2), after storage in chambers. The growing market request of table grape cv. 'Red Glob…

Instrumental and sensory analysis of eating quality of peaches and nectarines

2010

The influence of flesh firmness on consumer acceptance and its relationship with total soluble solids concentration (TSSC), titratable acidity (TTA) and sensory analysis was studied to understand their interaction in determining acceptance judgments, for different organoleptic typologies of peaches and nectarines. The investigation was carried out during summer 2006 on fruit of ‘September Sun’ and ‘Sweet September’ (low acid) peach (Prunus persica (L.) Batsch), and ‘Maria Dolce’ (low acid) and ‘Venus’ nectarines (Prunus persica (L.) Batsch, var. nucipersica). Sensory descriptors for peaches and nectarines were Flesh firmness, Sweetness, Sourness, Aroma, and Acceptability. The panel was able…

Valutazione qualitativa di pesche e nettarine a maturazione tardiva in Sicilia

2008

Gelso in Sicilia: qualità, caratterizzazione e comportamento dei frutti in post-raccolta

2019

Il gelso è una pianta arborea originaria dell'Asia e della Persia, introdotta in Italia dai Romani per le sue proprietà medicinali, oltre che per fini alimentari. Si distinguono due specie principali, comunemente denominati: gelso bianco e nero. I frutti, tipiche more di colore bianco violaceo o nero, sono molto apprezzati dall'uomo sin dall'antichità, sebbene vengano spesso collocati tra i frutti minori per la loro scarsa diffusione commerciale. Oggi, l'elevato interesse per le proprietà nutraceutichedi tali frutti spinge gli agricoltori ad una rivalutazione della gelsicoltura. Punto dolente della commercializzazione del gelso è la gestione post-raccolta a causa della brevissima shelf-life…