Cabecera Agrovin
Winemaking » Nutrients

Proper progress of alcoholic fermentation requires adequate biological conditions for yeast function. A critical requirement for the growth of yeast populations and for the full expression of the particular characteristics of each yeast strain is a proper balance between sugars and nitrogen compounds.

Yeast-assimilable nitrogen (YAN) is a measure of the nitrogen content in grapes and musts that is available for yeast function. YAN includes ammonium and assimilable amino acids (all amino acids except proline). Nutritional value of amino acids is much higher than that of ammonium. Thus, amino acids, and particularly some of them, like arginine, play a key role as nitrogen sources for yeast endurance at the end of the alcoholic fermentation. Agrovin provides various nitrogen-rich nutrient formulas with high levels of assimilable nitrogen in the form of amino acids, which can be classified as:

• Organic formulas: Actimax Natura, Actimax VIT and Actimax OENI Oeni contain amino acids as the only source of assimilable nitrogen.

• Compound formulas: Actimax Plus, Actimax Plus Green and Actimax XL are complex broad-spectrum nutrients featuring a balanced formula. They enable fermentation in harsh environments.

• Inorganic formulas: Actipasa and Actipasa Fast provide only inorganic nitrogen, as ammonium salts.

The properties of nutrients are listed in the table below. Click on each item for more information:



Wine type

Nitrogen type


Actimax NATURA
100% organic
Actimax VIT
100% organic
100% organic
Actimax OENI
100% organic
Actimax PLUS
50% organic
Actimax FERM
50% organic
Actipasa GREEN
Actipasa FAST
Actimax XL
50% organic