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.
In this study, the potentiality of Patatin (P), a protein extracted from potato, as must fining agent wasinvestigated 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 (grapereaction products) and hydroxycinnamic acids (HCA) concentrations were determined.The comparative trials showed that P is a suitable fining agent to prevent browning and decrease hazeduring must settling because its effect on grape phenolics, brown pigments and turbidity is comparableand/or better than that detected for C. Its use as single fining agent or in combination with B depends onmust characteristics.
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