... upon the content of soluble dry substance, rephractometrical determined, sugars, determined by soluble dry substance method, total acidity, determined by juice extraction and titration with NaOH, and gluco-acidimetric ...
... indices, sugars accumulation in berries grape, titratable acidity of must (g L-1 H2SO4), glucoacidimetric index, cluster weight (g), yield per plant (kg vine -1). Content of sugars was determined by refractometer. ...