TOOLS FOR HARVEST 2013. El Dorado Home Winemaker’s Club June Meeting. Ashlie Helm [email protected] Scott Laboratories is not only a lab…. CORK. EQUIPMENT. FERMENTATION. FILTRATION. grape Structure. The Berry. Grape Cell Structure. Primary wall-
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TOOLS FOR HARVEST 2013
El Dorado Home Winemaker’s Club
Composed of Polysaccharides-Pectin, Hemi-cellulose, Cellulose & Proteins
Sugars & Acids
Plan your alcoholic fermentation and malolactic fermentation together!
Malolactic fermentations are not an
Differenceof 250 hours
Influence of inoculation rate on VA production
Difference of 0.09g/L
Keep your yeast in suspension- especially at the end of fermentation
Aerate: when cap forms and 1/3 way through fermentation
Yeast biomass (10
YeastCell Wall Cross section…
Yeast cell wall composition:
Plasma Membrane is ~5% lipids
(sterols & unsaturated fatty acids)
After 5 generations of yeast growth
Plasma Membrane is <0.15% lipids
(sterols & polyunsaturated fatty acids)
YAN = Ammonia + Free Amino Acids (FAN)
Quality of Nitrogen on Fermentation
(INRA pilot scale trial:100L)
Total YAN added (mg/l)
0 50 100 50 24 24
Amino Acids Keto Acids Alcohols Esters
2007 Syrah Trial
2007 Sauvignon Blanc Trial
Yeast Strains contribute different attributes to your wine…..
Bacteria Strains contribute different attributes to your wine as well…..