PT  - JOURNAL ARTICLE
AU  - C. A. Sims
AU  - R. P. Johnson
AU  - R. P. Bates
TI  - Response of a Hard-to-Press <em>Vitis rotundifolia</em> Cultivar and a Hard-to-Clarify <em>Euvitis</em> Hybrid to Commercial Enzyme Preparations
AID  - 10.5344/ajev.1988.39.4.341
DP  - 1988 Jan 01
TA  - American Journal of Enology and Viticulture
PG  - 341--343
VI  - 39
IP  - 4
4099  - http://www.ajevonline.org/content/39/4/341.short
4100  - http://www.ajevonline.org/content/39/4/341.full
SO  - Am J Enol Vitic.1988 Jan 01; 39
AB  - A hard-to-press white grape cultivar, Dixie (Vitis rotundifolia), and a hard-to-clarify white cultivar, Stover (Euvitis hybrid), were treated with three concentrations of a commercial pectinase preparation and a pectinase-cellulase-hemicellulase preparation in an effort to improve press yields and/or the degree of settling. Both the standard pectinase preparation and the pectinase-cellulase-hemicellulase preparation were effective in increasing total press yields and free-run juice from both cultivars. However, the pectinase-cellulase-hemicellulase mixture did not increase settleable solids or total suspended solids in the Euvitis hybrid to nearly the extent of the pectinase preparation. The pectinase-cellulase-hemicellulase preparation was slightly more effective in increasing free-run yields than was the standard pectinase preparation.