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Fac-simile Scheda Linee di Ricerca - Federalimentare

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Dati pubblicati inerenti il tema <strong>di</strong> ricerca:1 Ferrarini R., Barbanti D., Tornielli GB., Simonato B., Cipriani M., Mora B. (2006). Parametritermo-igrometrici e modelli pre<strong>di</strong>ttivi della surmaturazione <strong>di</strong> uve impiegate nella produzionedei vini “Amarone” e “Recioto” della Valpolicella. Ricerche e innovazioni nell’industriaalimentare, a cura <strong>di</strong> S. Porretta, Chiriotti E<strong>di</strong>tori, (Pinerolo, TO), vol VII, 573-576.In this paper, some results about the study of <strong>di</strong>fferent thermo-hygrometric con<strong>di</strong>tions set during the grape surmaturationbefore the production of “Amarone” and “Recioto” Valpolicella wines have been reported. The effectsof <strong>di</strong>fferent temperature and relative humi<strong>di</strong>ty con<strong>di</strong>tions of surmaturation has been stu<strong>di</strong>ed by means of theweight loss and water activity kinetics; some physical charatectistics of grapes such as the grape shape and volumeshrinkage have been measured. The experimental kinetic data have been used to describe the surmaturationprocess through simple mathematical models for previsional purposes.2 Barbanti D., Mora B., Ferrarini R., Tornielli GB., Cipriani M. (2008). Effect of variousthermo-hygrometric con<strong>di</strong>tions on the withering kinetics of grapes used for the production of“Amarone” and “Recioto wines. Journal of Food Engineering, 85, 350-358.Grapes of Corvina, Corvinone and Ron<strong>di</strong>nella cultivars used for the production of “Amarone” and “Recioto”wines were withered under fixed con<strong>di</strong>tions of temperature (10, 15, 20 and 25°C) and relative humi<strong>di</strong>ty (53, 75and 95 %) in order to evaluate their withering kinetics in an 80 days time-frame. Withering kinetics were describedby means of linear and exponential regression equations. In agreement with basic dehydration theory,withering kinetic rates were found to increase with increasing temperature and with decreasing relative humi<strong>di</strong>ty(both above and below the value of the critical moisture). Moisture <strong>di</strong>ffusion coefficients, calculated for eachtrial con<strong>di</strong>tion by solving a simplified equation based on Fick’s second law, varied from 1.63*10-13 to 6.34*10-12. Withering kinetic rates showed an opposite dependence on temperature and relative humi<strong>di</strong>ty as shown bymultiple linear regression analysis results. Grape surface/volume ratio affected the withering kinetic rates forvalues above 3.8 cm-1 and at low relative humi<strong>di</strong>ty (53%).3 Mora B., Barbanti D., Sordato G., Tornielli GB., Ferrarini R. (2008). Induzione <strong>di</strong> Botrytiscinerea in forma nobile durante l’appassimento delle uve in post-raccolta. L’Enologo, vol. 9,pp 79-85.Tale lavoro è uno stu<strong>di</strong>o preliminare atto a valutare la possibilità <strong>di</strong> induzione e controllo dello sviluppo <strong>di</strong> B.cinerea in forma nobile durante l’appassimento <strong>di</strong> uva Garganega in post-raccolta. È stata analizzata l’influenzadel grado <strong>di</strong> maturazione delle uve e la necessità dell’ impiego <strong>di</strong> un inoculo <strong>di</strong> spore per ottenere lo sviluppodella muffa in forma nobile in modo sincrono.4 Mora B., Barbanti D., Tornielli GB., Ferrarini R. (2008). Controllo e innovazione nelprocesso <strong>di</strong> appassimento delle uve. Vignevini, vol. 10 (35), pp. 58-62.5 Tornielli GB., Nicolis G., Mora B., Barbanti D., Ferrarini R. (2008). L’appassimento infruttaio come tecnica per il potenziamento dell’identità dei vini Recioto e Amarone dellaValpolicella. 31° World Congress of Vine and Wine OIV, Verona, Giugno 2008, atti in corso<strong>di</strong> stampa.SISTAL - SOCIETA’ ITALIANA DI SCIENZE E TECNOLOGIE ALIMENTARIDipartimento <strong>di</strong> Scienze e Tecnologie Agroalimentari, Università degli Stu<strong>di</strong> della TusciaVia San Camillo de Lellis, 01100 ViterboTel.: 0761- 35 74 94/7 , Fax: 0761- 35 74 98, e-mail: mmoresi@unitus.it334

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