Enartis News – FAQ on Wine Fining
ENARTIS NEWS FAQ ON WINE FINING WHY FINING? HOW TO CHOOSE THE RIGHT FINING Fining agents can be used for many purposes in AGENT winemaking, including clarification, filterability Bench trials are essential to determine what fining improvement, prevention of haze and sediment agents to use and their dosages. To set up bench formation, organoleptic profile improvement, color trials, follow these steps: adjustment and removal of undesirable elements or flavors. The fining process is therefore a crucial • Prepare fining agent solution in water as stage in the production of all wine types. recommended on the technical data sheet. For liquid products, use solution as is or dilute, if HOW DOES FINING WORK? necessary. Each fining agent has specific properties and reacts • Label each sample bottle. Keep one untreated with various wine constituents depending on its sample as a control. origin, density of charge, molecular weight and • Fill samples with wine and leave some space for chemical properties. the addition. Fining involves two crucial reactions: • Add the fining agent solution. Flocculation: molecular interactions based on • Mix immediately after addition. Top each bottle charge, chemical bonds, absorption or adsorption with wine and mix again. of compounds and formation of flocculates. • Store wine at winery temperature for settling Sedimentation: flocculates formed are not soluble (usually 1-2 days). and heavier than wine/juice. They settle with time. • Evaluate the results (turbidity, volume of lees, WHAT ARE THE MAIN FACTORS THAT color, sensory, stability, etc.) INFLUENCE FINING EFFECTIVENESS? HOW TO EVALUATE FINING RESULTS Product preparation and addition, temperature, pH, Depending on the goal, several parameters can be wine redox potential and previous fining treatments used to evaluate the results of a fining treatment: are factors that can influence the effectiveness of turbidity, volume of lees, filterability, color intensity fining.
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