IB september 2017

Industrie delle Bevande wwb

Magazines

INDUSTRIE DELLE BEVANDE Vol. 46 - SEPTEMBER/OCTOBER 2017

CONTENTS

3 - Characterization of chitinase isoforms from grape juice
D. Gazzola - G. Pasini - S. Tolin - A. Curioni - S. Vincenzi

Grape chitinases are recognized as being mainly responsible for protein haze formation in white wines. Vitis vinifera L. cv. Manzoni Bianco grape juice proteins were fractionated using anion exchange and hydrophobic interaction chromatographies. According to SDS-PAGE and zymography, six protein bands with chitinolytic activity were subjected to mass spectrometry (MALDI-TOF/ TOF MS), which assigned all the bands to Vitis vinifera class IV chitinases. These grape chitinase isoforms showing different electrophoretic and chromatographic behaviours are likely to be also distinct in their functionality in wine. This could be relevant to understand the involvement of single chitinase components in wine hazing and to develop specific winemaking techniques for their removal from wine.

DEPARTMENTS

12 - Anteprima fiere (SIMEI-drinktec)

30 - Convegni

34 - Macchine strumenti

38 - Contenitori tappi

42 - Ingredienti prodotti

50 - Energia sostenibilità (F. Fantozzi)

60 - Mercati e consumi

70 - Leggi e norme

72 - Notizie dal mondo

78 - Agenda

84 - Recensione libri

88 - Indice degli inserzionisti e aziende citate

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