title: Performance of a protein extracted from potatoes for fining of white musts.
abstract: In this study, the potentiality of Patatin (P), a protein extracted from potato, as must fining agent was investigated on musts obtained from two South Italy grape cultivars (Falanghina and Greco). Besides P, fining agents as bentonite (B) and potassium caseinate (C) were assayed at different concentrations. The rate of sedimentation, the decline of turbidity during time, the absorbance at 420 nm, the GRP (grape reaction products) and hydroxycinnamic acids (HCA) concentrations were determined. The comparative trials showed that P is a suitable fining agent to prevent browning and decrease haze during must settling because its effect on grape phenolics, brown pigments and turbidity is comparable and/or better than that detected for C. Its use as single fining agent or in combination with B depends on must characteristics.
authors.affiliation: Dipartimento Agraria, Università degli Studi di Napoli Federico II, Sezione di Scienze della Vigna e del Vino, Viale Italia, 83100 Avellino, Italy. Electronic address: angelita.gambuti@unina.it.
authors.forename: Angelita
authors.initials: A
authors.lastname: Gambuti
authors.affiliation: Dipartimento Agraria, Università degli Studi di Napoli Federico II, Sezione di Scienze della Vigna e del Vino, Viale Italia, 83100 Avellino, Italy; Biolaffort, 126 Quai de la Sauys, 33100 Bordeaux, France.
authors.forename: Alessandra
authors.initials: A
authors.lastname: Rinaldi
authors.affiliation: Dipartimento Agraria, Università degli Studi di Napoli Federico II, via Università 100, 80055 Portici (NA), Italy.
authors.forename: Raffaele
authors.initials: R
authors.lastname: Romano
authors.affiliation: Dipartimento Agraria, Università degli Studi di Napoli Federico II, via Università 100, 80055 Portici (NA), Italy.
authors.forename: Nadia
authors.initials: N
authors.lastname: Manzo
authors.affiliation: Dipartimento Agraria, Università degli Studi di Napoli Federico II, Sezione di Scienze della Vigna e del Vino, Viale Italia, 83100 Avellino, Italy.
authors.forename: Luigi
authors.initials: L
authors.lastname: Moio
mesh_terms: D010636:Phenols / Q000032:analysis; D011198:Solanum tuberosum / Q000737:chemistry*; D027843:Vitis / Q000737:chemistry*; D014920:Wine / Q000032:analysis*
chemical_list: D010636:Phenols
keywords: Browning; Fining agents; GRP; Must fining; Potato proteins